Determination of atmospheric Hg by collection on iodated carbon, acid digestion and CVAFS detection

An established industrial monitoring technique has been refined to allow the accurate determination of total gaseous Hg in air at background levels (1-3 ng times m super(-3)). Samples are collected under vacuum through a commercially available iodide-impregnated carbon trap. For analysis, the trap i...

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Bibliographic Details
Published in:Water, air and soil pollution air and soil pollution, 1995-02, Vol.80 (1-4), p.1315-1318
Main Authors: BLOOM, N. S, PRESTBO, E. M, HALL, B, VON DER GEEST, E. J
Format: Article
Language:English
Subjects:
Analysis methods
Applied sciences
Atmospheric pollution
Exact sciences and technology
Pollution
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Summary:An established industrial monitoring technique has been refined to allow the accurate determination of total gaseous Hg in air at background levels (1-3 ng times m super(-3)). Samples are collected under vacuum through a commercially available iodide-impregnated carbon trap. For analysis, the trap is digested in a 7:3 (v/v) mixture of HNO sub(3) + H sub(2)SO sub(4), and an aliquot of the digest analyzed by SnCl sub(2) reduction, dual gold amalgamation, and cold vapor atomic fluorescence spectrometric (CVAFS) detection. The traps exhibit little breakthrough (
ISSN:0049-6979
1573-2932
DOI:10.1007/BF01189796