C. Aguilar et al., DETERMINATION OF ORGANOPHOSPHORUS PESTICIDES IN ENVIRONMENTAL WATER SAMPLES USING GC-MS AND 2 MEMBRANE EXTRACTION DISKS, LC GC, 14(12), 1996, pp. 1048
The authors determined organophosphorus pesticides in various environm
ental water samples using gas chromatography-mass spectrometry with el
ectron-impact ionization. They used solid-phase extraction with membra
ne extraction disks, including C18 and styrene-divinylbenzene sorbents
, which they compared for the extraction process.