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  • Multiresidue method for the determination of 13 pesticides in three environmental matrices: water, sediments and fish muscle.

Multiresidue method for the determination of 13 pesticides in three environmental matrices: water, sediments and fish muscle.

Talanta (2011-08-03)
Angélique Lazartigues, Cédric Fratta, Robert Baudot, Laure Wiest, Cyril Feidt, Marielle Thomas, Cécile Cren-Olivé
ABSTRACT

Pesticides residues in aquatic ecosystems are an environmental concern which requires efficient analytical methods. In this study, we proposed a generic method for the quantification of 13 pesticides (azoxystrobin, clomazone, diflufenican, dimethachlor, carbendazim, iprodion, isoproturon, mesosulfuron-methyl, metazachlor, napropamid, quizalofop and thifensulfuron-methyl) in three environmental matrices. Pesticides from water were extracted using a solid phase extraction system and a single solid-liquid extraction method was optimized for sediment and fish muscle, followed by a unique analysis by liquid chromatography coupled with tandem mass spectrometry (LC-MS/MS). Limits of quantification were below 5 ng L(-1) for water (except for fluroxypyr and iprodion) and ranged between 0.1 ng g(-1) and 57.7 ng g(-1) for sediments and regarding fish, were below 1 ng g(-1) for 8 molecules and were determined between 5 and 49 ng g(-1) for the 5 other compounds. This method was finally used as a new routine practice for environmental research.

MATERIALS
Product Number
Brand
Product Description

Supelco
Isoproturon, PESTANAL®, analytical standard
Supelco
Iprodione, PESTANAL®, analytical standard
Supelco
Clomazone, PESTANAL®, analytical standard
Supelco
Thifensulfuron-methyl, PESTANAL®, analytical standard
Supelco
Mesosulfuron-methyl, PESTANAL®, analytical standard
Supelco
Diflufenican, PESTANAL®, analytical standard
Supelco
Napropamide, PESTANAL®, analytical standard
Sigma-Aldrich
[3-(3,5-Dichlorophenyl)-2,4-dioxoimidazolidinyl]-N-(methylethyl)carboxamide, 97%