Evaluation of four mass spectrometric methods for the gas chromatographic analysis of polychlorinated n-alkanes
2004; Elsevier BV; Volume: 1067; Issue: 1-2 Linguagem: Inglês
10.1016/j.chroma.2004.09.098
ISSN1873-3778
AutoresZdenek Zencak, Anders Borgen, Margot Reth, Michael Oehme,
Tópico(s)Toxic Organic Pollutants Impact
ResumoThe suitability of four mass spectrometric methods for the gas chromatographic analysis of polychlorinated n-alkanes (PCAs, also called chlorinated paraffins) was evaluated and compared using spiked and fish liver samples. Electron ionization tandem mass spectrometry (EI–MS/MS) as well as electron capture negative ionization (ECNI) combined with low and high resolution mass spectrometry and CH4/CH2Cl2-negative ion chemical ionization (NICI) low resolution mass spectrometry were investigated. All methods showed an accuracy of 100% for the ECNI methods. EI–MS/MS and CH4/CH2Cl2-NICI led to errors of maximum 17% and 33%, respectively, independent from the degree of chlorination of the used reference standard.
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