| 噻菌灵杀菌剂在两种土壤中残留降解因素分析 |
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| 引用本文： | 韩朝博,魏朝俊,赵文婷,贾临芳.噻菌灵杀菌剂在两种土壤中残留降解因素分析[J].北京农学院学报,2017,32(2). |
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| 作者姓名： | 韩朝博 魏朝俊 赵文婷 贾临芳 |
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| 作者单位： | 北京农学院食品科学与工程学院,北京,102206;北京农学院生物科学与工程学院,北京,102206 |
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| 基金项目： | 北京市高层次创新创业人次支持计划领军人才项目资助 |
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| 摘 要： | 【目的】对比噻菌灵杀菌剂在不同土壤中的残留降解差异。【方法】研究使用高效液相色谱法分析了噻菌灵杀菌剂在两种土壤中不同温度、不同光照条件下的残留和降解动态。样品在超声振荡条件下用乙腈提取,高效液相色谱仪(配置紫外检测器)检测。添加量在5~10mg/kg。添加回收试验结果表明噻菌灵杀菌剂在两种土壤中的添加回收率为84.1%~90.2%,变异系数为0.98%~1.84%。【结果】试验结果表明,在添加5.0mg/kg和10.0mg/kg噻菌灵的土壤中,30℃条件下,在北京潮褐土中半衰期分别为23.9,24.1d,在东北黑土中的半衰期分别为18.7,21.1d,40℃时,噻菌灵在北京潮褐土和东北黑土中的降解半衰期分别为16.5,21.6d和14,18.9d。光照试验表明,在300 W高压汞灯照射下,添加10.0mg/kg时,噻菌灵在北京潮褐土和东北黑土中的半衰期分别为1.8,1.3d。【结论】此方法的灵敏度、准确度和精密度均符合农药残留测定的技术要求。
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| 关 键 词： | 噻菌灵 杀菌剂残留降解 高效液相色谱 |
Analysis of thiabendazole fungicide residuesand degradation factors in two kinds of soil |
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| HAN Chaobo,WEI Chaojun,ZHAO Wenting,JIA Linfang.Analysis of thiabendazole fungicide residuesand degradation factors in two kinds of soil[J].Journal of Beijing Agricultural College,2017,32(2). |
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| Authors: | HAN Chaobo WEI Chaojun ZHAO Wenting JIA Linfang |
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| Abstract: | Objective]Comparison of thiabendazole residual and degradation in different soils.Methods]In this study,we analyzed thiabendazole fungicide residues and degradation dynamics in two kinds of soil under different temperatures and illumination conditions by high performance liquid chromatography (HPLC).Samples were oblained by acetonitrile extraction under ultrasonic oscillation and analyzed by HPLC with an UV detector.The standard recovery test showed that the rate of recovery of thiabendazole fungicide was from 84.1 ％ to 90.2 ％ and relative standard deviations between 0.98 ％ and 1.84 ％ in the two kinds of soiLResults]The temperature experiments showed that the degradation half-life of 5 mg/kg thiabendazole in Beijing cinnamon soil was 23.9 d and the degradation half-life of 10 mg/kg thiabendazole was 24.1 d under 30 ℃.In Northeast black soil,they were 18.7 and 21.1 d,respectively.Under 40 ℃,the degradation half-lives of thiabendazole in Beijing cinnamon soil were 16.5 and 21.6 d,respectively.In Northeast black soil,they were 14 and 18.9 d,respectively.The illumination experiments showed that the half-lives of 10 mg/kg thiabendazole in Beijing cinnamon soil and Northeast black soilwere respectively 1.8 and 1.3 d under 300 W high pressure mercury lamps.Conclusion]The sensitivity,accuracy and precision of this method meet the technical requirements of pesticide residue determination. |
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| Keywords: | thiabendazole bactericide residue degradation high performance liquid chromatography |
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