Determination of organophosphorus and triazine pesticides in ground- and drinking water by solid-phase extraction and gas chromatography with nitrogen-phosphorus or mass spectrometric detection.
Trace enrichment and determination of ethoprophos, fenamiphos, fenthion, isophenphos, mevinphos, monocrotophos, atrazine and simazine were performed by solid-phase extraction on XAD-2 columns and Sep-Pak C18 cartridges, subsequent elution with an organic solvent and determination by GC with nitrogen-phosphorus detection (NPD) and mass spectrometry in the selected-ion monitoring mode (MS-SIM). Ground- and drinking water volumes of 1-2.5 l at concentrations levels of 0.1-5 micrograms/l were used for application of the method. Both adsorbents provided recoveries of 75-95%. The limits of detection were 0.08-0.60 micrograms/l with NPD and 0.03-0.13 micrograms/l with MS-SIM.
Department of Chemistry, University of Crete, Heraclion, Greece.
M
M
Psathaki
E
E
Manoussaridou
E G
EG
Stephanou
D008401:Gas Chromatography-Mass Spectrometry; D006115:Greece; D006540:Herbicides / Q000032:analysis*; D007306:Insecticides / Q000032:analysis*; D007475:Ion Exchange Resins; D009943:Organophosphorus Compounds; D010573:Pesticide Residues / Q000032:analysis*; D014227:Triazines; D014874:Water Pollutants, Chemical / Q000032:analysis*; D014881:Water Supply / Q000032:analysis*
D006540:Herbicides; D007306:Insecticides; D007475:Ion Exchange Resins; D009943:Organophosphorus Compounds; D010573:Pesticide Residues; D014227:Triazines; D014874:Water Pollutants, Chemical