Development of Reference Materials for Atmospheric Analysis of the Occupational Environment: Filter Samples Containing Toxic Metals.
Mavrodineanu-R; Baldwin-JR; Taylor-JK
NIOSH 1973 Oct:16 pages
Techniques are described that may be used to prepare filters on which are deposited prescribed amounts of heavy metals, for use as reference materials in industrial atmospheric analysis. Working solutions, prepared from pure metals and highly purified acids and water, are pipetted onto the filters held in jugs to facilitate their application. The techniques are used to prepare three sets of reference materials containing the following metals: Set 1 - lead, cadmium, zinc, tin; Set 2 - lead, zinc, manganese; Set 3 - beryllium. The amounts of each metal deposited on the filters correspond to those expected when collecting personal samples, in atmospheres when the concentrations of metals through dust, fumes and sprays are both below and above the threshold limit value levels.
Exposure-limits; Analytical-methods; Dust-control; Toxic-substances; Industrial-hygiene; Standards; Dust-sampling; Dust-filters; Air-contamination; Environment; Air-quality-measurement;
7439-92-1; 7440-43-9; 7440-66-6; 7440-31-5; 7439-96-5; 7440-41-7;
NTIS Accession No.
NIOSH, Cincinnati, Ohio, COM-75-11443, 16 pages, 6 references