嘧啶肟草醚在水稻田土壤、植株和大米中的残留分析方法

Study on Residue Analysis Method of Pyribenzoxim in Soil, Rice Straw and Grain

建立了嘧啶肟草醚在土壤、植株和大米中的液相分析方法。该方法的最小检出量为1×10-9g,最低检测质量分数为0.02mg/kg,在土壤中平均添加回收率为86.4%～90.4%,相对标准偏差为1%～8%;在植株中的平均添加回收率为80.6%～89.1%,相对标准偏差为4%～8%;在大米中平均添加回收率为86.4%～95.2%,相对标准偏差为2%～9%;灵敏度、精密度和准确度均符合农药残留分析的要求。

A method was developed to determine residue of pyribenzoxim in soil, rice straw and grain by HPLC, and its the limit of detection（LOD） and limit of quantification（LOQ） were 1×10^-9g and 0.02 mg/kg. The mean recovery and related standard deviation（RSD） of this method in soil, rice straw and grain were 86.4-90.4% and 1-8%, 80.6-89.1% and 4- 8%, 86.4-95.2% and 2-9% respectively. Therefore, it was an effective method which attained the pesticide residue analysis demands in sensitivity, accuracy and precision.