title: Dual low thermal mass gas chromatography-mass spectrometry for fast dual-column separation of pesticides in complex sample.
abstract: A method is described for fast dual-column separation of pesticides by use of dual low thermal mass gas chromatography-mass spectrometry (dual LTM-GC-MS) with different temperature programming. The method can provide two total ion chromatograms with different separation on DB-5 and DB-17 in a single run, which allows improved identification capability, even with short analysis time (<17 min). Also simultaneous detection with MS and elemental selective detector, e.g. pulsed flame photometric detection (PFPD) was evaluated for fast dual-column separation of 82 pesticide mixtures including 27 phosphorus pesticides. Dual LTM-GC-MS/PFPD was applied to analysis of pesticides in a brewed green tea sample with dual stir bar sorptive extraction method (dual SBSE).
authors.affiliation: GERSTEL K.K., 2-13-18 Nakane, Meguro-ku, Tokyo 152-0031, Japan.
authors.forename: Kikuo
authors.initials: K
authors.lastname: Sasamoto
authors.forename: Nobuo
authors.initials: N
authors.lastname: Ochiai
authors.forename: Hirooki
authors.initials: H
authors.lastname: Kanda