Title: Determination of Nitrophenol Residues in Fruits and Vegetables
Abstract: A solid-phase extraction coupled with gas chromatography method was developed for the determination of nitrophenol residues in fruits and vegetables.Samples were extracted with methanol-water-H3PO4.The crude extract was purified on HLB solid-phase extraction column,derivatized with acetic anhydride,and re-extracted with n-hexane.The derivatives were determined and confirmed by gas chromatography-election capture detector(GC-ECD).The established method was linear in the range of 0.01–1.0 mg/L.The limit of quantification(LOQ) was 0.01 mg/kg.The recovery rates were in the range of 81.0%–106.6% across three spiked levels(0.01,0.02 mg/kg and 0.05 mg/kg) in six fruits and vegetables(strawberry,apple,tomato,potato,spinach and aubergine),and the relative standard deviations(RSD) were in the range of 3.9%–8.1%.This method is reliable,stable and suitable for the determination of nitrophenol residue in fruits and vegetables.
Publication Year: 2012
Publication Date: 2012-01-01
Language: en
Type: article
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