[Simultaneous determination of organophosphorus pesticides in cruciferous vegetables by dual-column GC with pulsed FPD and FTD].
We evaluated simultaneous analytical methods for organophosphorus pesticides in cruciferous vegetables by gas chromatography (GC). Firstly, 36 pesticides were selected on the basis of monitoring data (April 1996-March 2003) in Aichi Prefecture. A sample was extracted with acetonitrile and the acetonitrile layer was separated by salting-out. The extract was cleaned up with gel permeation chromatography (GPC), and then with a tandem silica-gel/PSA mini-column. The test solution was subjected to dual-column GC equipped with a pulsed FPD (P mode, Rtx-OPPesticides column) and a FTD (Rtx-OPPesticides 2 column). Organophosphorus pesticides in such sulfur-rich matrices as cabbage and radish were determined without any serious interfering peaks on the pulsed FPD chromatograms after diluting the extracts 10- to 20-fold (0.25-0.5 mg/L of sample). The method was applied to cruciferous vegetables to demonstrate its usefulness in routine analysis.
Ueno
Eiji
E
Aichi Prefectural Institute of Public Health: 7-6, Nagare, Tsuji-machi, Kita-ku, Nagoya 462-8576, Japan.
Oshima
Harumi
H
Saito
Isao
I
Matsumoto
Hiroshi
H
Nakazawa
Hiroyuki
H
D002849:Chromatography, Gas / Q000379:methods*; D007306:Insecticides / Q000032:analysis*; D009943:Organophosphorus Compounds; D014675:Vegetables / Q000737:chemistry*
D007306:Insecticides; D009943:Organophosphorus Compounds