WO2003075001A1 - Chromatrographe en phase gazeuse et analyseur de composant d'air expire - Google Patents
Chromatrographe en phase gazeuse et analyseur de composant d'air expire Download PDFInfo
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- WO2003075001A1 WO2003075001A1 PCT/JP2003/001891 JP0301891W WO03075001A1 WO 2003075001 A1 WO2003075001 A1 WO 2003075001A1 JP 0301891 W JP0301891 W JP 0301891W WO 03075001 A1 WO03075001 A1 WO 03075001A1
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- gas
- separation column
- component
- measured
- flow path
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/88—Integrated analysis systems specially adapted therefor, not covered by a single one of the groups G01N30/04 - G01N30/86
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/26—Conditioning of the fluid carrier; Flow patterns
- G01N30/28—Control of physical parameters of the fluid carrier
- G01N30/32—Control of physical parameters of the fluid carrier of pressure or speed
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/26—Oils; viscous liquids; paints; inks
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/48—Biological material, e.g. blood, urine; Haemocytometers
- G01N33/483—Physical analysis of biological material
- G01N33/497—Physical analysis of biological material of gaseous biological material, e.g. breath
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/26—Conditioning of the fluid carrier; Flow patterns
- G01N30/28—Control of physical parameters of the fluid carrier
- G01N30/32—Control of physical parameters of the fluid carrier of pressure or speed
- G01N2030/324—Control of physical parameters of the fluid carrier of pressure or speed speed, flow rate
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
- G01N30/86—Signal analysis
- G01N30/8624—Detection of slopes or peaks; baseline correction
- G01N30/8641—Baseline
Definitions
- the present invention relates to a gas chromatograph device that can be widely used for qualitative and quantitative analysis of components in gas, and a breath component analyzer using the same.
- a gas chromatograph device introduces a gas to be measured together with a carrier gas into a gas separation column filled with a packing material, and the gas to be measured is caused by a retention time difference caused by an interaction between the gas to be measured and the packing material in the gas separation column.
- the gas components contained in the measurement gas are separated, and the separated gas components are detected by a detector 4 such as a thermal conductivity detector (TCD) or a flame ionization detector (FID) 4 to obtain a gas chromatograph. Is to create.
- TCD thermal conductivity detector
- FID flame ionization detector
- the gas separation column is arranged in a thermostat and is heated and maintained at a constant temperature. As a result, the retention time of gas components in the gas separation column is kept constant, and accurate measurement is possible.
- FIG. 14 is a diagram showing an example of this type of gas chromatograph device 6.
- the flow rate of the carrier gas supplied from the gas cylinder via the gas flow path 8 is adjusted by the flow rate switch 9.
- the gas to be measured is supplied from the gas inlet 11 and the mixed gas of the carrier gas and the gas to be measured is introduced into the gas separation column 1.
- the gas separation column 1 is provided in a thermostat 30 and is heated and maintained at a constant temperature.
- the gas provided from the gas separation column 1 is detected by the detector 14 to obtain a chromatogram.
- the constant temperature bath 30 has a heater 31, a fan 32, an intake ⁇ 33 whose opening amount is adjustable, and an exhaust unit 34.
- the fan 32 When heating gas separation column 1, pass through heater 31
- the fan 32 is rotated and heated by the heater 31 to send air to the gas separation column 1.
- the temperature of the gas separation column 1 is controlled by adjusting the amount of electricity supplied to the heater 31 1 ⁇ the opening of the intake ⁇ 33 and the exhaust ⁇ 34.
- the thermostatic bath 30 needs to have a predetermined volume in order to heat and maintain the gas separation column 1 at a constant temperature.
- the entire equipment becomes larger and more difficult.
- introduction of a gas chromatograph as a breath component analyzer for early detection of a disease and confirmation of a therapeutic effect is being studied, and development of a compact gas chromatograph is being requested.
- the carrier gas is pressurized from the gas cylinder 7 and is sent to the gas separation column 1.
- air As a carrier gas instead of a gas cylinder.
- the baseline of the output of the detector 14 fluctuates due to the influence of miscellaneous gas mixed in the air, and the High qualitative. Quantitative analysis cannot be provided. Disclosure of the invention
- the present invention has been made in view of the above problems, and has as its object to stabilize the baseline of the output of the detector despite being able to be downsized and using air as a carrier gas.
- Another object of the present invention is to provide a gas chromatograph device capable of performing highly reliable analysis.
- the gas chromatograph device of the present invention comprises: (1) a gas separation column filled with a member that causes flow delay in the gas component; an air pump that supplies air as a carrier gas into the gas separation column; A gas supply port that is provided in a gas flow path extending between the gas separation column and the carrier gas flowing in the gas flow path and supplies a gas to be measured containing a gas component to be detected; Provided A buffer tank capable of holding a carrier gas in an amount larger than the amount of carrier gas supplied per unit time by the air pump to the gas separation column; a detecting means for detecting a gas component of the gas to be measured supplied to the gas separation column including.
- the carrier gas is separated through the buffer tank that weakens the air flow and makes the concentration uniform. Since it is sent to the column, the baseline fluctuation of the output of the detection means can be suppressed, and a more reliable analysis can be provided.
- the present invention uses a variable capacity bag-like tank filled with clean air as a carrier gas instead of a gas cylinder, thereby enabling downsizing and stabilizing the baseline of the output of the detector.
- Another object of the present invention is to provide a gas chromatograph apparatus which can perform highly reliable analysis.
- this gas chromatograph device is filled with a member that causes flow delay due to a gas component, and has a gas separation column; a connection port, a variable capacity bag-shaped tank into which a carrier gas is filled;
- the connection port of the gas tank is connected to one end of the gas separation column via a gas flow path; a suction air pump provided at the other end of the gas separation column; provided between the gas separation column and the tank Gas supply that supplies the gas to be measured containing the gas component to be detected in the carrier gas flowing through the gas flow path; and includes a detection means for detecting the gas component of the gas to be measured supplied to the gas separation column.
- the gas chromatograph device further includes a sensor for detecting the injection timing of the gas to be measured into the gas flow path, and a gas to be measured based on the injection timing provided from the sensor and the output of the detection means.
- a sensor for detecting the injection timing of the gas to be measured into the gas flow path, and a gas to be measured based on the injection timing provided from the sensor and the output of the detection means.
- one end of the buffer tank is opened to the outside air, and the other end is connected to an air pump.
- a part of the carrier gas supplied to the gas flow path by the air pump is sent to the gas separation column, and the remaining carrier gas is supplied to the gas separation column.
- a general-purpose, inexpensive air pump having a large suction volume compared to the flow rate of the carrier gas sent to the gas separation column can be used.
- the gas chromatograph device preferably includes a gas purification device which is disposed in a gas flow path upstream of a gas supply port and uses at least one of a gas adsorbing substance and a gas decomposition catalyst.
- a gas purification device which is disposed in a gas flow path upstream of a gas supply port and uses at least one of a gas adsorbing substance and a gas decomposition catalyst.
- the gas chromatograph apparatus is provided with a flow sensor disposed upstream of the gas supply port or downstream of the detection means and in a gas flow path in the vicinity thereof and a gas sensor based on a change in the detection output of the flow sensor.
- a means for detecting the supply of the measurement gas is included.
- the timing of gas injection which serves as a measurement standard for retention time, can be accurately detected, and as a result, the analysis accuracy of gas components can be further improved.
- the gas chromatograph device has a control means for increasing the flow rate of the carrier gas supplied to the gas separation column based on a predetermined pattern from the time when the gas to be measured is supplied.
- the gas separation efficiency can be improved and the analysis time can be shortened even for gas components with a slow (long) retention time.
- the rise of the peak indicating the detection of the gas component by the detection means can be sharpened, the concentration conversion can be performed more accurately.
- a further object of the present invention is to provide a breath component analyzer capable of performing gas component analysis of breath using the above-described gas chromatograph device.
- This breath component analyzer performs gas chromatography on bad breath samples consisting of known gas components.
- a memory for storing reference data including a retention time previously obtained by a graph device, and an analysis means for comparing the reference data with measured data including a retention time obtained by a gas chromatograph device for bad breath as a gas to be measured.
- the above-mentioned breath component analyzer may include a correction means for correcting the variation of the retention time of the gas component with respect to the bad breath to be detected based on the variation of the U-tension time of the invariant component in the breath. preferable.
- a correction means for correcting the variation of the retention time of the gas component with respect to the bad breath to be detected based on the variation of the U-tension time of the invariant component in the breath.
- FIG. 1 is a schematic diagram showing a channel configuration of a gas chromatograph device according to a first embodiment of the present invention.
- FIG. 2 is a schematic perspective view illustrating an example of a gas separation column of the gas chromatograph device.
- FIG. 3 is a circuit diagram of the gas chromatograph device.
- FIG. 4 is a graph illustrating the detection of the injection of the gas to be measured by the gas chromatograph device.
- FIG. 5 is an example of a calibration curve registered in the arithmetic processing unit of the gas chromatograph device.
- FIG. 6 is an example of a normalized curve registered in the arithmetic processing unit of the gas chromatograph device.
- FIG. 1 is an example of a chromatograph in a breath component analyzer using the above-mentioned gas chromatograph.
- FIG. 8 is a diagram showing an example of a measurement result displayed on the display unit of the breath component analyzer. is there.
- FIG. 9 is a schematic diagram showing a flow channel configuration of a gas chromatograph device without a buffer tank.
- FIGS. 10 to 1C are graphs illustrating problems that may occur in the apparatus of FIG.
- FIG. 11 is a schematic diagram showing a channel configuration of a gas chromatograph device according to a second embodiment of the present invention.
- FIG. 12 is a schematic diagram showing a channel configuration of a gas chromatograph device according to a third embodiment of the present invention.
- FIG. 13 is a schematic diagram showing a channel configuration of a gas chromatograph device according to a fourth embodiment of the present invention.
- FIG. 14 is a schematic diagram showing a flow path configuration of a conventional gas chromatograph device using a gas cylinder.
- FIG. 1 is a diagram showing a channel configuration of a gas chromatograph device 6 of the present embodiment.
- the gas chromatograph device 6 includes a gas separation column 1 filled with a member that causes flow delay due to gas components, an air pump P for pumping air as a carrier gas into the gas separation column, and an air pump P.
- a gas supply port (hereinafter referred to as a gas injection port) that is provided in a gas flow path 22 that extends between the gas separation column 1 and that supplies a gas to be measured containing a gas component to be detected in a carrier gas flowing through the gas flow path 22. It mainly includes an inlet 26, a buffer tank 20 provided upstream of the air pump, and a detector 3 ⁇ ⁇ for detecting a gas component of the gas to be measured supplied into the gas separation column 1.
- the buffer tank 20 is formed in a pottle shape having a suction port 2 ⁇ a, an exhaust port 2 ⁇ b, and a return port 20c, which are small holes communicating with the outside air.
- the air pump P is It is connected to the exhaust D 20 b of the fat tank 2 ⁇ via the intake gas passage 21. The air is pumped / pressurized through the buffer tank 20 by the air pump P, and the air is sent to the gas separation column 1 via the gas flow path 22 as a carrier gas.
- reference numeral 23 denotes a gas purifying device arranged in the gas passage 22.
- Number 24 is a flow regulator consisting of a needle valve.
- Numeral 25 is a flow sensor for detecting a pressure change in the gas flow path 22.
- Reference numeral 27 denotes a branch provided in the gas passage 22 between the air pump P and the gas purification device 23.
- Reference numeral 28 denotes a speed controller 28 for controlling the flow rate of the carrier gas returned to the buffer tank 20 from the branch 2.
- Numeral 29 is a return gas passage connected from the branch to the return 2c of the buffer tank 20 via the speed controller 28.
- the detector 30 is arranged near an exhaust port communicating with the atmosphere in the gas separation column 1 and includes a semiconductor gas sensor.
- the buffer tank 20 can hold a sufficiently large amount of carrier gas as compared with the amount of carrier gas per unit time supplied to the gas separation column 1 by the air pump P.
- the carrier gas flowing through the gas separation column 1 is about 1 cc / min
- a tank of about 10 cc, for example is used as the buffer tank 2.
- the flow of air taken in from the outside is weakened, and the air is sent to the gas separation column 1 after its concentration is made uniform, so that the baseline fluctuation of the output of the detector 30 can be suppressed.
- the gas purifying device 23 is effective for removing miscellaneous gas when high concentration miscellaneous gas is contained or when miscellaneous gas exists for a long period of time.
- the gas purifying device 23 preferably uses one or both of activated carbon, a gas adsorbing substance such as silica gel, and a gas decomposition catalyst such as an oxidation catalyst.
- a gas decomposition catalyst such as an oxidation catalyst.
- the structure of the catalyst is not particularly limited, and an 82-cam structure or a granular structure can be used.
- the position is not limited to the position shown in FIG. It may be provided between the flow tank 20 and the air pump P or upstream of the buffer tank 2 ⁇ ⁇ ⁇ ⁇ . If a gas decomposition catalyst (combustion catalyst) is used alone or in combination with a gas adsorbent, it should be installed between the buffer tank 20 where the flow rate of the carrier gas is low and the air pump P, or downstream of the gas supply ⁇ 26. preferable.
- the gas purifier 23 may be provided at a plurality of locations.
- the gas separation column 1 is made of a metal having high thermal conductivity such as stainless steel and copper, and an outer cylinder 1a and an inner cylinder 1 made of, for example, Teflon (R) inserted into the outer cylinder 1a. It is formed of a double cylinder of b.
- the inner cylinder 1b is filled with a filler as a stationary phase. This filler is appropriately selected according to the type of the gas to be measured and the carrier gas.
- the heater 2 used in the gas separation column 1 is a flexible rubber-like heater in which the resistor 3 is insulated by insulating rubber such as silicone rubber sheet.
- the resistor 3 is spirally wound around the outer peripheral surface of the gas separation column 1 from one end to the other end.
- the gas separation column 1 is provided with a temperature sensor 4 composed of a thermocouple for detecting the temperature of the gas separation column 1.
- This thermocouple is disposed on the outer surface of the gas separation column 1 in a state where the thermocouple is insulated and coated with an insulating material such as a polyfluoroethylene resin (Teflon (R)) or glass wool.
- the column heater control unit controls the amount of electricity to the heater 2 based on the detection result of the temperature sensor 4, and is arranged near the gas separation column 1 to drive the cooling fan as needed.
- the gas separation column 1 is heated and maintained at a predetermined temperature. As described above, accurate measurement can be performed by keeping the retention time of the gas component in the gas separation column 1 constant.
- the gas chromatograph device 6 includes a power supply section 31, a column heater control section 32, an arithmetic processing section 33, a display section 34, and a flow rate measurement section 35.
- the power supply unit 31 supplies the drive voltage of the air pump P from the AC power supply and the operating voltage of the arithmetic processing unit 33, the display unit 34, and the flow rate measurement unit 35 + V And generate
- the column heater controller 32 has a function of maintaining the temperature of the gas separation column 1 at a predetermined temperature. That is, the PID control unit of the column heater control unit 32 controls the power supplied to the heater 2 through the phase control unit based on the temperature of the heater 2 of the gas separation column 1 measured by the temperature sensor including a thermistor.
- the arithmetic processing unit 33 has a determination processing function of detecting the injection timing of the gas to be measured from the gas injection port 26.
- the output of the flow rate sensor 25 is taken in from the flow rate measuring section 35, and a change in the flow rate is detected based on the sensor output. By detecting the change in the flow rate, the injection timing of the gas to be measured from the gas injection ⁇ 26 is determined.
- the arithmetic processing section 33 has an arithmetic function of calculating the flow rate of the carrier gas in the gas flow path 22 based on the output of the flow rate sensor 25.
- the arithmetic processing unit 33 controls the energization of the heater 30 a of the detector 30 composed of a gas sensor, and performs a high-temperature period for heat-cleaning the gas-sensitive body of the detector 30 and a detection output of the gas-sensitive body. It has a function of controlling the temperature of the detector 30 during a low-temperature period for capturing the temperature.
- the arithmetic processing unit 33 has an analysis processing function of analyzing and quantifying the detected gas component based on the detection output taken during the low temperature period and the detection of the injection timing, and a temperature sensor that detects the temperature of the gas separation column 1. And a function of sending display data to the display unit 34.
- the display unit 34 is composed of a liquid crystal display and a controller. Based on the data sent from the arithmetic processing unit 33, the flow rate of the carrier gas, the analysis results and the quantification of the detected gas component obtained by the analysis processing function are determined. The value and the temperature of the gas separation column 1 are displayed.
- the flow rate sensor 25 includes a negative characteristic thermistor and a platinum coil, and is configured by a wind speed sensor.
- the flow rate sensor 25 is disposed in the gas flow path 22, is heated by applying a voltage to the platinum coil, and detects the temperature in the heated gas flow path 22 as a negative characteristic. —Detect with a mister.
- the temperature detected by the negative characteristic thermistor becomes a constant temperature.
- the flow rate changes, that is, when the flow velocity changes, the detected temperature changes.
- the detection output is AZD-converted by the flow rate measuring unit 35 and then taken into the arithmetic processing unit 33.
- the arithmetic processing unit 33 monitors the flow rate of the carrier gas by converting the flow rate from the detected temperature.
- the power switch SW when the power switch SW is turned on and the gas chromatograph device 6 is operated, air is pumped from the outside through the buffer tank 20 by the air pump P, and a predetermined amount of the sucked air is used as carrier gas. It is sent to the gas channel 22 via the branch channel 27. The supply amount of the carrier gas to the gas passage 22 is adjusted by the flow controller 24. The remaining carrier gas is returned to the buffer tank 2 via the speed controller 28 and the return gas passage 29.
- the carrier gas sent to the gas passage 22 is passed through a gas purification device 23 to remove extraneous gas components, and sent to the gas separation column 1 as a clean carrier gas via a flow controller 24.
- the flow rate of the carrier gas is constantly detected by the flow rate sensor 25, and the arithmetic processing section 33 converts the flow rate of the carrier gas based on the output of the flow rate sensor 25 and monitors the flow rate. The conversion result is displayed on the display unit 34.
- the flow rate (flow rate) in the gas flow path 22 is instantaneously increased. Decrease.
- the temperature detected by the negative characteristic thermistor of the flow sensor 25 instantaneously rises. This instantaneous change in the detected temperature is detected by the arithmetic processing unit 33 by comparing the level of the output A of the flow sensor 25 shown in FIG. 4 with a preset reference level L.
- the arithmetic processing unit 33 determines that the gas to be measured is injected at this detected timing, and measures the gas component glue tension time detected by the detector 30 based on this timing.
- the detection of the injection timing of the gas to be measured which was conventionally performed by the operator by operating the manual switch, is performed by the gas chromatograph of the present embodiment. According to the rough apparatus 6, more accurate detection can be performed by automation.
- the gas to be measured supplied from the gas injection ⁇ 26 is mixed with the carrier gas, and this mixed gas is introduced into the gas separation column 1.
- gas components are separated by interaction with the stationary phase.
- the gas component derived from the gas separation column 1 is detected by the detector 30.
- the gas separation column 1 used in the present embodiment is heated and held by the heater 2, the gas separation column 1 does not require a large-scale device configuration unlike a conventional thermostat, and the gas separation column 1
- the size of the heating means for heating and maintaining the column 1 at a constant temperature can be reduced in size, and the size of the entire apparatus can be reduced.
- This breath component analyzer registers the retention time of the gas component against the known bad breath, the peak of the detection output of the detection means, and the concentration data of each gas component that liSi with respect to the peak of the detection output.
- a means is provided for performing qualitative Z quantitative measurement of the gas component of bad breath by comparing the registered data with the detection output of the detection means for the gas component corresponding to bad breath, which is the gas to be measured.
- gas species of target gas contained in the measurement gas which is exhaled gas (diabetes, liver disease, dosing period alcoholism therapeutic agent, and Flip each human H 2 S, CH 3 SH, (CH 3 2 ) Since S) is determined, calibration curve data (see Fig. 5) indicating the relationship between the change in the output of the detector 30 and the gas concentration for the gas to be detected (see Fig. 5), and the peak in the detection signal waveform of the detector 30
- the normalized curve data (see FIG. 6) which is the peak shape data when the detection signal at the time is set to “1” is registered in the memory 33 a of the arithmetic processing unit 33.
- the horizontal axis in FIG. 5 is a gas concentration (ppb), the vertical axis represents the output change of the detector 30 (mV), the calibration curve is expressed by Y two a X b.
- Line I is H 2 S for the gas to be detected, Line II is CH 3 SH for the gas to be detected, and Line III is the gas to be detected (CH
- the peak curve of FIG. 6 (i) is, including C_ ⁇ to anyone with blood in the breath as long as the person 2 boiled ⁇ It is an invariant component such as 2 (the component that becomes the background of expiration).
- the peak curve ( ⁇ ) is H 2 S
- the peak curve (iii) is CH 3 SH
- the peak curve (iv) is (CH 3 ) 2 S
- the time corresponding to each peak is the retention time.
- the arithmetic processing section 33 can measure the time from the output of the detector 30 that detects the gas coming out of the gas separation column 1 and the detected gas injection timing to the generation of the peak.
- the detected gas component is determined by checking the measured retention time of the detected gas component and the detected peak waveform shape with the data registered in the memory 33a. Further, the concentration (quantitative value) of the detected gas component can be determined from the peak value of the detected output at that time. The judgment result is displayed on the display unit 34.
- FIG. 2 is an example of a gas chromatograph of a gas component counteracting bad breath in the exhaled gas using the gas chromatograph device 6 of the present embodiment.
- the separation curve 2 is that the exhalation background
- 3 the separation curves of H 2 S, 4 is separated curves of CH 3 SH, during the measurement data (CH 3 ) 2 S does not exist.
- the measurement result is displayed on the display unit 34 as shown in FIG.
- the gas type, the change (mV) in the detection output of the detector 30 and the concentration of the bad breath component gas are displayed.
- the concentration may be calculated from the area of the peak waveform regardless of the peak height of the detection output.
- the gas component peak detection output of the detector 30 is expressed initially found C_ ⁇ 2, paying attention to that a free-invariant component anyone during expiration, such ⁇ 2, retention time of the gas component
- the arithmetic processing unit 33 calculates how much the retention time, which corresponds to the peak of the detection output that appears thereafter, deviates from the reference, and based on the calculation result, the above-described H 2 S, CH By correcting the retention time of 3 SH and (CH 3 ) 2 S, the effects of carrier gas flow fluctuations can be eliminated.
- an air pump P is provided in the gas flow path 8 on the upstream side of the flow regulator 9, and the end of the gas flow path 8 communicates with the outside air without disposing a buffer tank.
- a gas chromatograph that is configured to send air to the gas separation column 1 through the gas flow path 8
- a sporadic output level may occur on the baseline of the output of the detector 14.
- the baseline may rise over a long period of time, as shown in Figure 1OB.
- the air supplied by the air pump is contaminated, there is a risk that the upper limit of the baseline will fluctuate, as shown in Figure 1 OC.
- the first embodiment employs a configuration in which a second tank is provided upstream of the air pump P, and a part (excess air) of the air supplied from the pump is returned to the buffer tank 20.
- the buffer tank 2 ⁇ is disposed in the gas flow path 22 between the flow regulator 24 and the gas inlet 26. That is, the air sucked in by the air pump P is sent to the gas separation column 1 as a carrier gas via the buffer tank 20 after the flow rate is adjusted by the flow rate regulator 24.
- the intake capacity of the air pump P is large, excess air may be discharged to the outside.
- Other configurations are substantially the same as those of the first embodiment, and therefore, duplicate description will be omitted.
- the retention time described above depends on the flow rate of the carrier gas, the larger the flow rate of the carrier gas, the shorter (shorter) the retention time. Also, depending on the gas component, the time to emerge from the gas separation column 1 may be very slow (long). In such a case, detection takes time and the peak of the detection output becomes broad, resulting in inaccurate concentration conversion. There is a risk of becoming.
- the gas chromatograph apparatus of the present embodiment controls the flow rate of the carrier gas in a predetermined pattern from the time of gas injection detection in order to shorten the detection time of a gas type having a slow retention time and sharpen the peak of the detection output. Is performed.
- FIG. 9 is a schematic diagram showing a flow channel configuration of this gas chromatograph device.
- the first gas flow path 22 a into which the flow regulator 24 a for adjusting the flow rate and the solenoid valve 37 a are inserted, and the second gas flow path 22 b into which the flow regulator 24 b for adjusting the flow rate and the solenoid valve 3 b are inserted.
- the gas flow path 22 is provided in the gas flow path 22 so as to be parallel to the gas flow path 22b.
- the first flow path 22 a is used as a flow path for flowing a predetermined carrier gas flow rate before injection of the measured gas
- the second flow path 22 b is used as a flow path for increasing the carrier gas after injection of the measured gas.
- Each of the flow controllers 24a and 24b is adjusted in advance so as to have a predetermined flow rate.
- the arithmetic processing unit 33 normally controls to open the solenoid valve 3a and close the solenoid valve 37b.
- the flow rate of the carrier gas is controlled by opening the solenoid valves 3a and 37b in accordance with the flow rate change pattern registered in the memory 33a in advance.
- the channels 22a and 22b may be provided in the gas channel 21 between the buffer tank 20 and the air pump P.
- the voltage applied to the air pump P may be controlled to increase the amount of air taken in from the outside, and the flow regulator may be replaced with a needle valve that can be electrically controlled. In this case, if the applied voltage of the air pump P is gradually increased by an inverter device or the like, the flow rate of the carrier gas can be gradually increased.
- the configuration other than the above is substantially the same as the above-described first and second embodiments, and a duplicate description will be omitted.
- the gas chromatograph device of the present embodiment is, as shown in FIG. It is characterized in that a variable capacity bag-shaped tank 40 such as a rubber bow I bag is used in place of the buffer tank 20.
- connection portion 4 a provided at the exhaust port of the bag-shaped tank 40 is connected to one end of the gas flow channel 22.
- the air in the bag-shaped tank 4 ⁇ is sucked into the gas separation column 1 together with the gas to be measured by the suction air pump P provided on the exhaust side of the gas separation column 1.
- This analyzer can also be used when the gas to be measured is air.
- Gas supply port
- the gas suction port 26 ′ is connected to the gas flow path 22 via a solenoid valve 28.
- the gas suction port 26 ' When detecting gas components contained in the air, the gas suction port 26 'is open to the outside, and the measurement is performed in the gas flow path 22, which is under negative pressure by opening the solenoid valve 28 with a manual switch or the like. Air, which is a gas, is sucked.
- the air sucked into the gas flow path 22 is sent to the gas separation column 1 together with the carrier gas.
- the connection portion 40a is closed, and the air inside does not leak out. Opened by the valve structure when connected to gas flow path 22.
- the bag-shaped tank 40 can be removed.
- the gas component contained in the atmosphere is detected has been described.
- the gas chromatograph device 6 is used as an exhalation component analyzer, the gas to be measured is stored in a gas to be measured (expiration) bag or the like. It is good if it is connected to gas suction ⁇ 26 '. Except for the configuration described above, the configuration is substantially the same as the first to fourth embodiments, and a duplicate description will be omitted.
- the gas chromatograph device 6 of each embodiment described above can be used not only for the breath component analyzer but also for analyzers for other gases to be measured, and is not limited to the use of the above-described embodiments.
- Industrial applicability As described above, according to the present invention, even if a miscellaneous gas component is contained in a carrier gas composed of air taken in by an air pump, the flow of air is weakened by the buffer tank to make the concentration of the miscellaneous gas component uniform. After that, it can be sent to the gas separation column, so that the baseline fluctuation of the output of the detection means caused by the miscellaneous gas can be suppressed. Measurement becomes possible.
- control to increase the flow rate of the carrier gas in a predetermined pattern from the time of gas injection detection is performed. If this is done, the detection time for gas species with slow retention times will be reduced, and sharp peaks in the detection output will be obtained.
- the gas chromatograph device of the present invention is particularly preferably used for a breath component analyzer, but can be widely used for qualitative and quantitative analysis of other gases to be measured.
- the baseline of the detection output can be stabilized to provide a reliable measurement.
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2003211233A AU2003211233A1 (en) | 2002-03-04 | 2003-02-20 | Gas chromatograph and expired air component analyzer |
KR1020047013713A KR100662715B1 (ko) | 2002-03-04 | 2003-02-20 | 가스 크로마토그래프 장치, 및 이 장치를 이용한 호기성분 분석 장치 |
CA002478112A CA2478112C (en) | 2002-03-04 | 2003-02-20 | Gas chromatograph and expired air component analyzer |
US10/506,421 US7194890B2 (en) | 2002-03-04 | 2003-02-20 | Gas chromatograph and expired air component analyzer |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2002-57885 | 2002-03-04 | ||
JP2002057885A JP3902489B2 (ja) | 2002-03-04 | 2002-03-04 | ガスクロマトグラフ装置及び呼気成分分析装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003075001A1 true WO2003075001A1 (fr) | 2003-09-12 |
Family
ID=27784673
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2003/001891 WO2003075001A1 (fr) | 2002-03-04 | 2003-02-20 | Chromatrographe en phase gazeuse et analyseur de composant d'air expire |
Country Status (6)
Country | Link |
---|---|
US (1) | US7194890B2 (ja) |
JP (1) | JP3902489B2 (ja) |
KR (1) | KR100662715B1 (ja) |
AU (1) | AU2003211233A1 (ja) |
CA (1) | CA2478112C (ja) |
WO (1) | WO2003075001A1 (ja) |
Cited By (2)
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WO2006051354A1 (en) * | 2004-11-12 | 2006-05-18 | Cnr Consiglio Nazionale Delle Ricerche | Method and apparatus for introducing samples of gas at controlled pressure in a gas chromatograph |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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US8549894B2 (en) * | 2010-11-23 | 2013-10-08 | Bruker Chemical Analysis Bv | Gas chromatography with ambient pressure stability control |
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JP6070919B2 (ja) * | 2012-03-26 | 2017-02-01 | 株式会社島津製作所 | ガスクロマトグラフ |
US9180242B2 (en) | 2012-05-17 | 2015-11-10 | Tandem Diabetes Care, Inc. | Methods and devices for multiple fluid transfer |
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5628304U (ja) * | 1979-08-10 | 1981-03-17 | ||
JPS58112960U (ja) * | 1982-01-27 | 1983-08-02 | 三菱電機株式会社 | 簡易ガス分析装置用キヤリヤ−ガス供給装置 |
JPH1019865A (ja) * | 1996-07-02 | 1998-01-23 | Suzuki Motor Corp | 呼気分析装置 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3366149A (en) * | 1965-07-15 | 1968-01-30 | Varian Aerograph | Injection system for gas chromatography |
US3430418A (en) * | 1967-08-09 | 1969-03-04 | Union Carbide Corp | Selective adsorption process |
US3455817A (en) * | 1968-07-31 | 1969-07-15 | Abcor Inc | Method of and apparatus for the recovery of fractions from chromatographic fractions |
US3624986A (en) * | 1970-09-04 | 1971-12-07 | California Inst Of Techn | Flow controller for carrier gas chromatography |
FR2412331A1 (fr) * | 1977-12-20 | 1979-07-20 | Elf Aquitaine | Procede de recyclage du gaz vecteur utilise dans un procede de chromatographie |
US4238204A (en) * | 1979-06-18 | 1980-12-09 | Monsanto Company | Selective adsorption process |
US4295630A (en) | 1979-08-09 | 1981-10-20 | Greer Hydraulics, Incorporated | Fail-safe actuator and hydraulic system incorporating the same |
US4387819A (en) | 1981-12-23 | 1983-06-14 | Corsette Douglas Frank | Sealing means for a snap-on fitment |
US4994096A (en) * | 1989-05-09 | 1991-02-19 | Hewlett-Packard Co. | Gas chromatograph having integrated pressure programmer |
US6063166A (en) * | 1998-07-30 | 2000-05-16 | Hewlett-Packard Company | Chromatograph having a gas storage system |
US6074461A (en) * | 1998-07-30 | 2000-06-13 | Hewlett-Packard Company | Chromatograph having a gas recycling system |
-
2002
- 2002-03-04 JP JP2002057885A patent/JP3902489B2/ja not_active Expired - Lifetime
-
2003
- 2003-02-20 CA CA002478112A patent/CA2478112C/en not_active Expired - Lifetime
- 2003-02-20 KR KR1020047013713A patent/KR100662715B1/ko active IP Right Grant
- 2003-02-20 WO PCT/JP2003/001891 patent/WO2003075001A1/ja active Application Filing
- 2003-02-20 AU AU2003211233A patent/AU2003211233A1/en not_active Abandoned
- 2003-02-20 US US10/506,421 patent/US7194890B2/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5628304U (ja) * | 1979-08-10 | 1981-03-17 | ||
JPS58112960U (ja) * | 1982-01-27 | 1983-08-02 | 三菱電機株式会社 | 簡易ガス分析装置用キヤリヤ−ガス供給装置 |
JPH1019865A (ja) * | 1996-07-02 | 1998-01-23 | Suzuki Motor Corp | 呼気分析装置 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006051354A1 (en) * | 2004-11-12 | 2006-05-18 | Cnr Consiglio Nazionale Delle Ricerche | Method and apparatus for introducing samples of gas at controlled pressure in a gas chromatograph |
KR20200065439A (ko) | 2018-11-30 | 2020-06-09 | 주식회사 케이엔알 | 센서형 크로마토그래프 분석장치 |
Also Published As
Publication number | Publication date |
---|---|
KR20040101263A (ko) | 2004-12-02 |
CA2478112C (en) | 2008-11-25 |
JP2003254956A (ja) | 2003-09-10 |
KR100662715B1 (ko) | 2006-12-28 |
US20050160790A1 (en) | 2005-07-28 |
AU2003211233A1 (en) | 2003-09-16 |
US7194890B2 (en) | 2007-03-27 |
CA2478112A1 (en) | 2003-09-12 |
JP3902489B2 (ja) | 2007-04-04 |
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