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| 气相色谱法测定黄瓜和土壤中代森锰锌的残留及其消解动态分析 |
| Determination of Mancozeb Residues in Cucumber and Soil by Gas Chromatography and Dynamic Analysis of Degradation |
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| DOI： |
| 中文关键词: 代森锰锌 气相色谱法 消解动态 黄瓜 土壤 |
| 英文关键词: Mancozeb Gas chromatography Degradation dynamics Cucumber Soils |
| 基金项目:农业部农药残留基金资助项目(2012F288) |
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| 中文摘要: |
| 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〖JP〗～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。 |
| 英文摘要: |
| 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 in 0.007 6 mg/L～3.80 mg/L. For Mancozeb determination in cucumber and soil, the detection limits were 5.12 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 〖JP2〗Mancozeb half life was 3.63 d~4.77 d in cucumber, and 4.19 d~7.33 d in soil. |
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