Determination of selected toxic organic vapors in air by adsorbent trapping and capillary gas chromatography
Titel:
Determination of selected toxic organic vapors in air by adsorbent trapping and capillary gas chromatography
Auteur:
Kebbekus, Barbara B. Bozzelli, Joseph W.
Verschenen in:
Journal of environmental science and health. Part A, Toxic/hazardous substances & environmental engineering
Paginering:
Jaargang 17 (1982) nr. 5 pagina's 713-723
Jaar:
1982
Inhoud:
Selected volatile organic species, including chloroform, 1,2-dichloroethane, 1,1,1-trichloroethane, benzene, carbon tetrachloride, trichloroethylene, tetrachloroethylene, p-dichlorobenzene, o-dichlorobenzene, and nitrobenzene, are determined in ambient air by collection and concentration on Tenax-filled traps. The samples are recovered for analysis by a novel thermal desorption system which allows the injection of an aliquot of the sample into a 50M fused silica methyl silicone gas chromatographic column, which is programmed from -90 to 140° C. A standard addition process for qualitative analysis and an external standard method for quantitation are described, both using compressed gas standards. GC/MS is used for confirmation of sample identity on approximately 10% of the samples.
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