ISSN:
0951-4198
Keywords:
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Physics
Notes:
On analyzing 11 pure individual toxaphene congeners, it was noted that a nonachloro congener (2,2,5,5,8,8,9,10,10-nonachlorobornane, Parlar's No. 62) failed to produce a reasonable [M-Cl]- response under our electron-capture negative-ion (ECNI) chemical ionization conditions. On the other hand, this congener gave a stronger response than other nonachlorobornane congeners in electron impact (EI) mode. Based on EI mass spectra data as well as electron capture gas chromatographic results, this congener is one of the major components in commercial toxaphene and is also present in fish and cod liver oil samples. This congener-specific discriminatory effect raises concern about possible false negative results from the ECNI/selective-ion monitoring analyses.
Additional Material:
5 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/rcm.1290081011
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