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On the significance of [M−HCl] − fragment ions in gas chromatography/electron capture negative ionization mass spectra of octachloro compounds of technical toxaphene
Author(s) -
Vetter Walter,
Luckas Bernd
Publication year - 1998
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/(sici)1097-0231(19980331)12:6<312::aid-rcm157>3.0.co;2-k
Subject(s) - chemistry , toxaphene , electron ionization , mass spectrum , gas chromatography , ion , chromatography , mass spectrometry , fragment (logic) , ionization , electron capture , chemical ionization , analytical chemistry (journal) , organic chemistry , programming language , pesticide , computer science , agronomy , biology
The response factors of compounds of technical toxaphene vary significantly in GC/ECNI‐MS. The response of 2‐ endo, 3‐ exo, 5‐ endo, 6‐ exo, 8,8,9,10‐octachlorobornane (B8‐1412) was twice as high as in GC/ECD if compared with 2‐ endo, 3‐ exo, 5‐ endo, 6‐ exo, 8,8,10,10‐octachlorobornane (B8‐1413 or Parlar #26). One explanation was found with the simultaneous formation of [M‐HCl] − with the [M‐Cl] − fragment ion which usually dominates the ECNI‐MS chromatograms. The significance of [M‐HCl] − fragment ions in the ECNI mass spectra of octachlorobornanes was studied by monitoring m/z 374 in standards and technical toxaphene. This technique is an interesting tool to identify B8‐1413 in complex mixtures. © 1998 John Wiley & Sons, Ltd.