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Characterization of Polychlorinated Terphenyl Mixtures by High Resolution Gas Chromatography and Tandem Mass Spectrometry
Author(s) -
Santos F. J.,
Galceran M. T.,
Caixach J.,
Huguet X.,
Rivera J.
Publication year - 1996
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(199611)10:14<1774::aid-rcm705>3.0.co;2-i
Subject(s) - chemistry , terphenyl , mass spectrometry , tandem mass spectrometry , resolution (logic) , tandem , chromatography , gas chromatography/tandem mass spectrometry , analytical chemistry (journal) , gas chromatography , ion , selectivity , selected reaction monitoring , organic chemistry , materials science , artificial intelligence , computer science , composite material , catalysis
We have investigated the capacity of high resolution gas chromatography/tandem mass spectrometry in the multi‐reaction monitoring mode to study the distribution of polychlorinated terphenyls (PCTs) in commercial mixtures and environmental samples. Collision energy and collision‐gas pressure have been optimized using a hybrid instrument for maximum sensitivity and selectivity. Product ion and precursor‐ion spectra of PCTs have been obtained. The internal interferences observed in the detection and measurement of the [M] +· ions due to [M−2Cl] +· fragment ions from the terphenyl homologues with two additional chlorine atoms have been mainly eliminated using tandem mass spectrometry with selected reaction monitoring of the loss of two 35 Cl atoms. This procedure has been used to determine the homologue distribution of PCTs in commercial mixtures such as Aroclor 5432, 5442, 5460 and Leromoll 141, and in samples of shellfish and tuna.