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稻田土壤经石油醚震荡提取,加PSA、C18、无水硫酸镁净化后,经UPLC农药残留检测,外标法定量,方法回收率在73.20-94.55%、变异系数4.31-8.37%、最低检出浓度分别为0.02mg/kg。
The paddy soils were extracted with petroleum ether, and then cleaned up with PSA, C18 and anhydrous magnesium sulfate. The pesticide residues were detected by UPLC and quantified by external standard method. The recoveries were 73.20-94.55% and the coefficient of variation was 4.31-8.37% Concentrations were 0.02mg / kg.