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Separation and Assay of 7 Endocrine Disrupting Pesticides in Corn and Durra by Micellar Electrokinetic Capillary Electrophoresis |
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DOI:10.3969/j.issn.1004-4957.年份.月份 |
KeyWord:micellar electrokinetic capillary electrophoresis pesticides analysis endocrine-disrupting chemicals |
Author | Institution |
张玉芬,齐景凯,韩娜仁花,于秀英 |
1.内蒙古民族大学分析测试中心;2.内蒙古民族大学生命科学学院;3.内蒙古民族大学农学院 |
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Abstract: |
A method was developed for the simultaneous separation and determination of carbendazim,simazine,atrazine,chlorpyrifos,decamethrim,acetochlor and cypermethrin in corn and durra by micellar electrokinetic capillary electrophoresis.The conditions for separation and detection of a mixture of seven pesticides were optimized.The results showed that,under the optimized conditions of running buffer:20 mmol/L Na2HPO4+50 mmol/L SDS+5% acetonitrile(pH 9.0),separation voltage:20 kV,detection wavelength:222 nm,ambient temperature:25 ℃,pressure injection:30 mbar×10 s,the analytes were successfully separated within 28 min.The calibration curves of seven pesticides were linear in the range of 5.0-150 μg?L-1.The detection limits were in the range of 0.6-3.0 μg/L.This method was successfully applied in the analysis of seven pesticides in corn and durra samples with spiked recoveries of 97%-108% and RSD of 2.2%-4.7% |
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