Determination of Fungicide Azoxystrobin Residues in Soil
A simple method is presented for determinion of azoxystrobin residues in soil with GC-ECD. The sample was extracted by acetone and then further partitioned by dichloromethane and petroleum ether. The extracts were then cleaned up by the glass clean-up column filled with active charcoal and silica gel. The column loaded with sample was eluted by dichloromethane and ethyl acetate(70:30,v/v). The eluate was collected and concentrated for GC-ECD analysis. The result of assay showed a good linearity(r2 =0. 999 8) over the concentration range of 6. 25-400 ng/mL. The limit of detection and quantification of azoxystrobin is 3 ng/mL and 10 ng/mL respectively. The recoveries for the sample were in the range 83. 52％-107.36％ with relative standard deviation(RSD)of 5. 21％-9. 11％ for 10-2 000 ng/g concentrations. It was demonstrated that the method was a convenient,accurate,and sensitive method, which is particularly suitable for determination of azoxystrobin residue in soil.
azoxystrobin residue gas chromatography soil
Li Wei Wu Yijun Qin Dongmei Ma Yan Qin Shaoping
State Key laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chi Institute for the Control of Agrochemicals, Ministry of Agriculture of the Peoples Republic of Chin State Key laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chi
国际会议
北京
英文
225-230
2007-10-09（万方平台首次上网日期，不代表论文的发表时间）