To study the method of residue analysis of picoxystrobin in banana and soil.The samples were extracted with acetonitrile,purified by solid phase extraction,detected by gas chromatography-microelectronic capture detector,and external standard for quantification.The recoveries of banana and soil were 101.4％～109.2％and 93.7％～105.0％,respectively,in the range of 0.02 to 0.10 mg/kg and 0.01 to 0.10 mg/kg,relative standard deviation(RSD)were 2.5％～4.0％and 2.8％～8.4％,respectively.The minimum detected amounts were 0.01 ng,and the minimum detected concentrations were 0.02 mg/kg and 0.01 mg/kg,respectively.The sensitivity,accuracy and precision of the method meet the requirements of pesticide residue analysis,and can be widely used for the detection of picoxystrobin residue.
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