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Heavy Metal Aerosols: Collection and Dissolution Efficiencies.

Authors
Anonymous
Source
NIOSH 1981 Mar:100 pages
Link
NIOSHTIC No.
00121078
Abstract
A NIOSH study of the collection and dissolution efficiencies of heavy metal aerosols is reviewed. Purposes and components of the study, together with the general approach taken, are outlined. The filter loading and sample systems are illustrated. Dissolution and recovery studies for lead (7439921) (Pb), platinum (7440064) (Pt), tellurium (13494809) (Te), and selenium (7782492) (Se), collection efficiency test results, and aerosal concentration values are tabulated. Dissolution and measurement studies for species of Pb, Pt, Te, and Se are discussed together with aerosal generation and test results. The authors conclude that the NIOSH procedure for lead-oxide (1309600) is unsuitable using only nitric-acid, but a combination of nitric-acid and hydrogen-peroxide is suitable for all Pb species. The procedure for Te recovery is adequate. Digestion of Se by aqua-regia is necessary for the more insoluble forms. Platinum-oxide (12035824) must be heated to more than 380 degrees C. Aqua-regia is suitable for digestion of Pt, but the NIOSH standard method using nitric-acid and perchloric-acid is unsuitable.
Keywords
NIOSH-Contract; Contract-210-79-0058; Heavy-metals; Analytical-methods; Analytical-processes; Aerosols; Aerosol-particles; Aerosol-sampling;
CAS No.
7439-92-1; 7440-06-4; 13494-80-9; 7782-49-2; 1309-60-0; 12035-82-4;
Publication Date
19810301
Funding Type
Contract;
Fiscal Year
1981
NTIS Accession No.
PB83-106740
NTIS Price
A06
Identifying No.
Contract-210-79-0058
Source Name
NIOSH, U.S. Department of Health and Human Services, 100 pages, 12 references
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