ISSN:
0306-042X
Keywords:
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
The analytical methodology of 1,2,3,4,5,6-hexachlorocyclohexane isomers residing in an aquatic environment was investigated with gas chromatography electron impact mass spectrometry selected ion monitoring as the determinative technique. An extraction method with a macroreticular Amberlite XAD-2 resin column was successfully developed and the extract was subjected to the gas chromatography electron impact mass spectrometry selected ion monitoring system. Ions at m/z 219 [M—HCl2+2]+· from residual 1,2,3,4,5,6-hexachlorocyclohexane isomers and m/z 224 [M—2HCl2+2]+· from dual laboratory-synthesized deuterated internal standards were monitored for the estimation. Linearities of individual 1,2,3,4,5,6-hexachlorocyclohexane isomers with gas chromatography electron impact mass spectrometry selected ion monitoring were much wider than those with gas chromatography electron capture detection, and it could be said that dilution or concentration of the sample extract was commonly unnecessary. In addition, carrier effects of deuterated internal standards with representative water samples and selectivity of the method in comparison with gas chromatography electron capture detection were clearly shown. In field experiments, total 1,2,3,4,5,6-hexachlorocyclohexane levels were from 166.54 to 7.40 parts per trillion (ng L-1).
Additional Material:
8 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/bms.1200100603
