Rapid and sensitive determination of two degradation products of flumethrin in honey by ultrasonically assisted extraction and gas chromatography with electron capture detection
文献类型: 外文期刊
第一作者: Zhou, Jinhui
作者: Zhou, Jinhui;Xue, Xiaofeng;Li, Yi;Zhang, Jinzhen;Wu, Liming;Chen, Lanzhen;Zhao, Jing
作者机构:
关键词: flumethrin;4-fluoro-3-phenoxybenzaldehyde;4-fluoro-3-phenoxybenzaldehyde-cyanohydrin;honey;ultrasonically assisted extraction;PERFORMANCE LIQUID-CHROMATOGRAPHY;FLUVALINATE RESIDUES;ACARICIDES;COUMAPHOS;AMITRAZ
期刊名称:JOURNAL OF SEPARATION SCIENCE ( 影响因子:3.645; 五年影响因子:2.943 )
ISSN:
年卷期:
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收录情况: SCI
摘要: A rapid and sensitive method for the determination of 4-fluoro-3-phenoxybenzaldehyde cyanohydrin (FPBC) and 4-fluoro-3-phenoxy-benzaldehyde (FPB) in honey samples using ultrasonically assisted extraction and gas chromatography with electron capture detection (GC-ECD) has been developed. The different factors affecting the efficiency of the extraction were carefully optimized. The honey sample was extracted with a mixture of hexane and dichloromethane (v/v, 1:1) utilizing the ultrasonically assisted technique and cleaned up by solid-phase extraction on Oasis HLB cartridges. The eluate was evaporated to dryness and residues were reconstituted to 1.0 mL with hexane and determined by GC - ECD. The calibration curves of fortified samples showed acceptable linear response (R-2 > 0.99) over a range of 3-100 ng/g for FPBC and FPB in seven replicate determinations of six concentrations, respectively, and analysis of variance (ANOVA) with a lack-of-fit test was performed to validate the regression data. Overall average recoveries ranged from 90.9 to 106.2% for honey samples. The detection limits were 0.9 ng/g for FPBC and 1.0 ng/g for FPB, respectively. This method can be successfully applied to routine determination of two degradation products of flumethrin in honey samples.
分类号: O64
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