This invention provides a quantitative X-ray analyzing system and process for scanning a sample with a beam of radiation includes an X-ray detector for detecting characteristic X-rays generated when a sample is scanned. A computer processor for processing outputs of the X-ray detector to determine concentration...http://www.google.co.uk/patents/US5866903?utm_source=gb-gplus-sharePatent US5866903 - Equipment and process for quantitative x-ray analysis and medium with quantitative x-ray analysis program recorded
