Liquid chromatographic determination of nine N-methylcarbamates in drinking water.

A multi-residue method for the simultaneous extraction from drinking water using solid-phase extraction on LiChrolut EN [poly(styrene-divinylbenzene), PSDVB] and determination of nine N-methylcarbamate pesticides (NMCs) (aldicarb, its metabolites i.e. aldicarb sulfone and aldicarb sulfoxide and carbaryl, carbofuran, dioxacarb, ethiofencarb, methomyl and propoxur) using reversed-phase liquid chromatography was studied. A 1000-fold pre-concentration was achieved and the method was used for determination of the nine pesticides in water, with limits of detection in the range 3-15 ng L(-1). For all compounds the recoveries determined at the 0.1 and 1 microg L(-1) level generally ranged from 85 to 104% with relative standard deviations (RSD) of 1.4-8.8%.

[1]  D. Pérez-Bendito,et al.  Multi‐residue analysis of N‐methylcarbamate pesticides and their hydrolytic metabolites in environmental waters by use of solid‐phase extraction and micellar electrokinetic chromatography , 1999, Electrophoresis.

[2]  M. Hennion.  Solid-phase extraction: method development, sorbents, and coupling with liquid chromatography. , 1999, Journal of chromatography. A.

[3]  M. J. Redondo,et al.  Comparison of different sorbents for on-line liquid-solid extraction followed by high-performance liquid chromatographic determination of nitrogen-containing pesticides. , 1998, Journal of chromatography. A.

[4]  D. Barceló,et al.  Comparison of different clean-up procedures for the determination of N-methylcarbamate insecticides in vegetable matrices by high-performance liquid chromatography with UV detection , 1998 .

[5]  S. S. Yang,et al.  Recent advances in the residue analysis of N-methylcarbamate pesticides. , 1996, Journal of chromatography. A.

[6]  A. Junker-Buchheit,et al.  Pesticide monitoring of drinking water with the help of solid-phase extraction and high-performance liquid chromatography. , 1996, Journal of chromatography. A.

[7]  J. Curry,et al.  High-performance liquid chromatographic method for the analysis of aminocarb, mexacarbate and some of their N-methylcarbamate metabolites by post-column derivatization with fluorescence detection , 1994 .

[8]  D Barceló,et al.  Determination of pesticides in drinking water by on-line solid-phase disk extraction followed by various liquid chromatographic systems. , 1993, Journal of chromatography.

[9]  B. McGarvey,et al.  High-performance liquid chromatographic methods for the determination of N-methylcarbamate pesticides in water. soil, plants and air , 1993 .

[10]  M. Hiemstra,et al.  Low ng/1-level determination of twenty N-methylcarbamate pesticides and twelve of their polar metabolites in surface water via off-line solid-phase extraction and high-performance liquid chromatography with post-column reaction and fluorescence detection , 1992 .

[11]  Y. Odanaka,et al.  The use of solid bonded-phase extraction as alternative to liquid-liquid partitioning for pesticide residue analysis of crops , 1991 .

[12]  S. Lesage.  Solid-phase sample collection for the analysis of aldicarb residues in groundwater , 1989 .