甲基异柳磷在土壤中的残留降解分析

该实验应用气相色谱法测定了土壤中的甲基异柳磷的残留降解情况,以丙酮-正己烷(2∶1,V/V)为提取剂,氮吹仪浓缩定容,经气相色谱外标法定量测定。结果表明,当添加水平为0.05mg/kg时,甲基异柳磷在土壤中的回收率为91.33%,添加水平为0.1mg/kg时回收率为100.5%;添加浓度0.1mg/kg的甲基异柳磷在土壤中半衰期为9.58~11.27d。

Residue and Degradation Analysis of Isofenphos-methyl in Soil

A experiment was conducted to reveal residual and degradation of Isofenphos-methyl in soil. The residues in the samples were extracted by mixture of acetone and hexane,then,samples were prepared after concentrition and constant volume,the target compounds were determined by GC as external standart. The spiked recoveries of Isofen?phos-methyl in soil were 91.33%at the spiked level of 0.05mg/kg and 100.5%at the spiked levels of 0.1mg/kg. The results showed that the half-live of Isofenphos-methyl in soil was 9.58~11.27d.