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Test for screening: asbestos.

Authors
Kim-WS; Carter-JW; Kupel-RE
Source
NIOSH 1979 Oct; :1-6
Link
NIOSHTIC No.
00092775
Abstract
A colorimetric test was developed to detect the presence of asbestos (1332214) in bulk samples by the formation of color complexes from added magnesium (II) (Mg) and iron (II) (Fe). In the magnesium test, several drops of Mg reagent are added directly to the sample, which is washed with glycerine and mixed with phosphoric acid and sodium hydroxide. A blue color indicates that chrysotile (12001295) may be present. In the iron test, several drops of Fe reagent are added to the sample, which is washed with an acetic and sulfuric acid mixture. Each acid then is added separately, and hydrofluoric acid also is added. A red color indicates the possible presence of amosite (12172735) or crocidolite (12001284). If both tests give a negative response, the probability is low that asbestos is present. If the presence of Mg or Fe is indicated, further analysis to confirm, identify, and quantitate the asbestos is required.
Keywords
NIOSH-Author; Screening-tests; Colorimetric-analysis; Detection; Asbestos-dusts; Chemical-reagents; Analytical-methods; Chemical-analysis; Chemical-reactions
CAS No.
1332-21-4; 12001-29-5; 12172-73-5; 12001-28-4
Publication Date
19791001
Document Type
Numbered Publication
Fiscal Year
1980
NTIS Accession No.
PB80-198385
NTIS Price
A02
Identifying No.
(NIOSH) 80-110
NIOSH Division
DPSE
Source Name
National Institute for Occupational Safety and Health
State
OH
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