Residue analysis and degradation dynamics of fenoxanil in rice

›› 2012, Vol. 24 ›› Issue (5): 0-864.

• 论文 •

Residue analysis and degradation dynamics of fenoxanil in rice

ZHANG Chang-peng;ZHAO Hua;WU Min;ZHANG Chun-rong;HU Xiu-qing;PING Li-feng;LI Zhen*

State Key Lab Breeding Base for Zhejiang Sustainable Plant Pest Control, MOA Key Lab for Pesticide Residue Detection, Institute of Quality and Standard for Agro\|products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China

Received:1900-01-01 Revised:1900-01-01 Online:2012-09-24 Published:2012-09-24

Abstract

Abstract: The method for the determination of fenoxanil residues in paddy plant, soil and water were estimated for evaluating the safety of fenoxanil in paddy field. The samples were extracted with ethyl acetate, cleaned-up using a Florisil solid phase extraction cartridge, and subsequently determinate by gas chromatography-electron capture detector(GC-ECD). Average recoveries of fenoxanil in paddy plant, soil and water were found in the range of 74.98%-102.96% at the three spiking levels from 0.05 mg·kg-1 to 5.00 mg·kg-1 with relative standard deviations of 0.68%-8.07%. The limits of quantification (LOQ) in paddy plant, soil and water were 0.05 mg·kg-1. The field experiments demonstrated that the decline curves of fenoxanil in paddy field were accorded with the first-order kinetics equation. The half-lives of fenoxanil in paddy plant, soil and water were 3.62-5.51, 3.60-24.32, 2.29-26.66 d, respectively.Fenoxanil is easily degradable pesticide in paddy plant, soil and water．

Key words: fenoxanil, rice, GC-ECD, residue

ZHANG Chang-peng;ZHAO Hua;WU Min;ZHANG Chun-rong;HU Xiu-qing;PING Li-feng;LI Zhen*. Residue analysis and degradation dynamics of fenoxanil in rice[J]. , 2012, 24(5): 0-864.

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Residue analysis and degradation dynamics of fenoxanil in rice

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