Polychlorinated Paraffins PCP GC-HRT4D

In this study, an improved analytical approach using comprehensive two-dimensional gas chromatography (GCxGC) with high-resolution time-of-flight mass spectrometry (HRTOFMS) and a multi-mode ionization source operating in Electron Capture Negative Ionization (ECNI) mode was developed to quantify PCPs. ECNI-HRTOFMS significantly increased sensitivity, improved selectivity, and minimized isobaric interferences between PCP congeners and other POPs.