Solid-phase microextraction coupled with high performance liquid chromatography: a complementary technique to solid-phase microextraction-gas chromatography for the analysis of pesticide residues in strawberries
作者:
Zhi Wang,
Bernard Hennion,
Louise Urruty,
Michel Montury,
期刊:
Food Additives & Contaminants
(Taylor Available online 2000)
卷期:
Volume 17,
issue 11
页码: 915-923
ISSN:0265-203X
年代: 2000
DOI:10.1080/026520300750038090
出版商: Taylor & Francis Group
关键词: Solid-PHASE Microextraction Pesticide Residues Strawberries High Performance Liquid Chromatography
数据来源: Taylor
摘要:
Solid-phase microextraction coupled with high performance liquid chromatography has been studied for the analysis of methiocarb, napropamide, fenoxycarb and bupirimate in strawberries. The strawberries were blended and centrifuged. Then, an aliquot of the resulting extracting solution was subjected to solidphase microextraction (SPME) on a 60 μm polydimethylsiloxane /divinylbenzen e (PDMS/DVB) fibre for 45 min at room temperature. The extracted pesticides on the SPME fibre were desorbed into SPME/ high performance liquid chromatography (HPLC) interface for HPLC analysis with diode-array detection (DAD). The method is organic solvent-free for the whole extraction process and is simple and easy to manipulate. The detection limits were shown to be at low μg kg−1level and the linear response covered the range from 0.05 to 2 mg kg−1of pesticides in strawberries with a regression coefficient larger than 0.99. A good repeatability with RSDs between 2.92 and 9.25% was obtained, depending on compounds.
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