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Evaluation of three ionisation modes for the analysis of chlorinated paraffins by gas chromatography/ion‐trap mass spectrometry
Author(s) -
Castells P.,
Santos F. J.,
Galceran M. T.
Publication year - 2004
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/rcm.1366
Subject(s) - chemistry , chlorinated paraffins , mass spectrometry , electron ionization , chromatography , gas chromatography , analytical chemistry (journal) , ionization , mass spectrum , direct electron ionization liquid chromatography–mass spectrometry interface , repeatability , ion , ion trap , fragmentation (computing) , chemical ionization , organic chemistry , computer science , operating system
Abstract The applicability of three ionisation modes to the analysis of short‐chain chlorinated paraffins (SCCPs) using gas chromatography coupled with mass spectrometry (GC/MS) was evaluated. MS conditions for electron ionisation (EI), positive chemical ionisation (PCI) and electron‐capture negative ionisation (ECNI) were optimised using commercially available individual tetra‐, penta‐ and hexachlorodecanes. In addition, mass spectra were studied and fragmentation pathways were proposed for each individual congener. Different fragment ions were evaluated for quantification, and ECNI‐MS using [HCl 2 ] − and [Cl 2 ] − . ions was selected for the determination of SCCPs. Quality parameters (repeatability, limits of detection and calibration range) were established for the proposed method, which was then applied to the analysis of SCCPs in river sediments. Copyright © 2004 John Wiley & Sons, Ltd.