异丙甲草胺在花生上的残留量及动态研究  

Residue and Dynamics of Metolachlor in Peanut

作　　者：汪文娟[1] 张寿江[1] 刘炳海[1] 于建垒[1] 

机构地区：[1]山东省农科院植保所,济南250100

出　　处：《农业环境保护》1992年第3期123-124,共2页Agro-Environmental Protection

摘　　要：本文介绍了异丙甲草胺在花生上的残留量及动态田间试验、样品采集和提取净化方法。用气相色谱仪电子捕获检测器检测,外标法定量,最小检知浓度0.02mg/kg。土壤和花生仁方法回收率分别为83.7％—87.5％,82.9％—92.4％。72％乳油每公顷用在土壤中原始沉积量为O.56—0.64mg/kg,半衰期为1—2d。前期降解迅速,后期降解缓慢,62d降解90％以上。陆地及膜覆盖栽培花生仁中最终残留量未检出。The residue and dynamics of metolachlor in peanut and methods for field experiments, sample collection, extraction and purification were described. Metolachlor residues were quantitated by capillary gas chromatography equipped with ECD detector. Minimum recognition of response was 0.02mg/kg. The recovery value obtained from mature peanut seeds and soil were 83.7%—87.5% and 82.9%—92.4% respectively. When application of 72% metolachlor EC was made at the rate of 6.0 1/ha, the Total Toxic Residue(TTR)of metolachor in soil was 0.56—0.64mg/kg, the half-life of the TTR of metolachlor was 1.20—1.23 ds, metolachlor was degradated more quickly in early stage than latestage,the degradation rate was above 90% at the 62th day after application. No detectable metolachlar residues were found in peanut seed samples from both normal land planting and filmmulching planting.

关 键 词：异丙甲草胺 花生 残留量 

分 类 号：X830.1[环境科学与工程—环境工程]