期刊论文

Determination of Mancozeb Residues in Cucumber and Soil by Gas Chromatography and Dynamic Analysis of Degradation

中文

环境监测管理与技术

1006-2009

2018

30

3

56-59

10.19501/j.cnki.1006-2009.20180513.003

农业部农药残留基金资助项目

本校为第一机构

采用GC-FPD(S)法测代森锰锌在黄瓜和土壤中的残留,通过优化前处理和检测条件,使方法在0.007 6 mg /L ~ 3.80 mg /L范围内线性良好,在黄瓜和土壤中的方法检出限分别为5.12 μg /kg和2.35 μg /kg。黄瓜和土壤3个质量比水平的空白加标回收率分别为91.1% ~ 96.5%和82.4% ~ 90.5%,7次测定结果的RSD为5.0% ~ 6.5%和2.4% ~ 4.1%。将该方法用于研究代森锰锌在黄瓜和土壤中的消解动态,得知代森锰锌在黄瓜中的半衰期为3.63 d ~ 4.77 d,在土壤中的半衰期为4.19 d ~ 7.33 d。

A method for determination of mancozeb residues in cucumber and soil was developed using GC-FPD（ S）. By optimizing the sample pretreatment and detection condition,the method had a good linearity in0. 007 6 mg/L - 3. 80 mg/L. For Mancozeb determination in cucumber and soil,the detection limits were5. 12 μg/kg and 2. 35 μg/kg,the spiked recovery of 3 mass ratios were 91. 1% ~ 96. 5% and 82. 4% ~90. 5%,and the RSD of 7 duplicate measures were 5. 0% ~ 6. 5% and 2. 4% ~ 4. 1%,respectively. Dynamic analysis of degradation showed Mancozeb half-l...