A Si/Li Based High Resolution Portable X-Ray Analyzer for Field Screening of Hazardous Waste.
NIOSH 1991 Feb:737-740
A field portable X-ray fluorescence (FPXRF) analyzer for on site screening and analysis of inorganics in hazardous waste was described. The FPXRF involved a microprocessor controlled analyzer connected to a hand held probe. The probe contained an X-ray source, a detector, and a means of reproducible presentation of the sample for measurement. A sealed radioisotope capsule emitting X- ray or low energy gamma rays was a preferred source of primary radiation for portable instruments. Empirical calibration methods allowed quantitative analysis based on calibration samples. A new Si/Li based hand held probe was developed. The new probe had a 30 square millimeter active area and could be used in any position. The performance of the Si/Li probe was compared with that of a gas filled detector. The Si/Li probe could be used directly with the X- MET-880 in an empirical calibration mode.
Hazardous-materials; X-ray-analysis; Chemical-analysis; Analytical-methods; Environmental-pollution; Inorganic-compounds; X-ray-fluorescence-analysis;
Field Screening Methods for Hazardous Wastes and Toxic Chemicals. Second International Symposium, February 12-14, 1991. Sponsored by U.S. EPA; U.S. DOE; U.S. Army Toxic and Hazardous Materials Agency; U.S. Army Chemical Research Development and Engineering Center; U.S.A.F.; Florida State Univ.; National Environmental Technology Applications Corp.; and NIOSH