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PAT program. Background and current status.

Authors
NIOSH
Source
Appl Occup Environ Hyg 1996 Oct; 11(10):1181-1182
NIOSHTIC No.
00234140
Abstract
The background and current status of the proficiency analytical testing (PAT) program were discussed. PAT is a collaborative effort of the American Industrial Hygiene Association and NIOSH designed to assist participating laboratories in improving their ability to analyze samples of occupational and environmental relevance. The program provides quality control reference samples to more than 1,800 participating laboratories in 18 countries. Each calendar quarter (round) reference samples consisting of mixtures of cadmium (7440439), chromium (7440473), lead (7439921), or zinc (7440666), silica (14808607), either amosite (12172735), chrysotile (12001295), or man made fibers, and one to three of the solvents benzene (71432), chloroform, (67663), 1,2-dichloroethane (107062), methanol (67561), p-dioxane (123911), tetrachloroethylene (127184), toluene (108883), 1,1,1-trichloroethane (71556), trichloroethylene (79016), or o-xylene (95476) are mailed to the participating laboratories. The participants are evaluated for each analysis by comparing their reported results against acceptable values established for each sample. A participating laboratory is rated as proficient if all results were reported and all were classified as acceptable during the last two consecutive rounds or if at least 75% of the results reported in the last four consecutive rounds were classified acceptable. PAT round 125 was sent out in April 1996 to 1,330 participating laboratories. A total of 1,201 laboratories submitted results. Of these, 95.0% were rated proficient for the metals analysis, 98.8% proficient for the silica analysis, 95.6% proficient for the fiber analysis, and 89.0% were rated proficient for the organic solvents analysis. PAT round 126 was sent out in July 1996. The organic solvents in this round were benzene, o-xylene, and toluene, the metals were cadmium, chromium, and lead, the silica sample had a talc background, and the asbestos sample was amosite.
Keywords
NIOSH-Author; Laboratory-work; Performance-capability; Chemical-analysis; Organic-solvents; Fibrous-dusts; Asbestos-fibers; Heavy-metals; Quality-standards
CODEN
AOEHE9
CAS No.
7440-43-9; 7440-47-3; 7439-92-1; 7440-66-6; 14808-60-7; 12172-73-5; 12001-29-5; 71-43-2; 67-66-3; 107-06-2; 67-56-1; 123-91-1; 127-18-4; 108-88-3; 71-55-6; 79-01-6; 95-47-6
Publication Date
19961001
Document Type
Journal Article
Editors
Esche-CA; Groff-JH
Fiscal Year
1997
NTIS Accession No.
NTIS Price
Issue of Publication
10
ISSN
1047-322X
Source Name
Applied Occupational and Environmental Hygiene
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