| HPLC检测分析噻虫嗪种衣剂在马铃薯中的残留动态变化 |
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| 引用本文： | 胡梅,刘永刚,张海英,郭建国,吕和平,李晓蓉.HPLC检测分析噻虫嗪种衣剂在马铃薯中的残留动态变化[J].中国农学通报,2012,28(15):189-193. |
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| 作者姓名： | 胡梅 刘永刚 张海英 郭建国 吕和平 李晓蓉 |
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| 作者单位： | 1. 甘肃省农业科学院农业测试中心,兰州,730070
2. 甘肃省农业科学院植物保护研究所,兰州,730070 |
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| 基金项目： | 国家公益性(农业)行业专项，甘肃省农科院科技支撑计划项目 |
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| 摘 要： | 为明确马铃薯种薯包衣播种后活性成分噻虫嗪在植株和薯块上的残留动态，评价噻虫嗪种衣剂的使用安全性，建立其在马铃薯植株和薯块上的残留检测方法。采用田间试验和高效液相色谱法，样品经甲醇超声提取，浓缩净化后，通过HPLC-UVD检测，外标法定量。添加回收率实验结果表明：该方法在马铃薯植株及薯块上添加回收率分别为86.73%~92.58%、86.03%~93.35%，相对标准偏差(RSD)分别为3.46%~8.19%、3.65%~6.22%，最低检出量为1.0×10-9 g，最低检测浓度为0.001 mg/kg，符合农药残留检测要求。残留动态实验结果表明：噻虫嗪种衣剂在马铃薯植株中的残留动态符合一级动力学方程，包衣播种后60天，噻虫嗪在马铃薯植株中的残留量高，为33.975 mg/kg，以此为原始沉积量得到半衰期为12.4天。在马铃薯块茎中未检测到噻虫嗪。
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| 关 键 词： | 动力因素 动力因素 |
| 收稿时间： | 2012/2/14 0:00:00 |
| 修稿时间： | 2012/2/28 0:00:00 |
Analysis on Residue Dynamics of Thiamethoxam Seed Coating on Potato by High Performance Liquid Chromatography |
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| Hu Mei
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Liu Yonggang
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Zhang Haiying
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Guo Jianguo
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Lv Heping
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Li Xiaorong.Analysis on Residue Dynamics of Thiamethoxam Seed Coating on Potato by High Performance Liquid Chromatography[J].Chinese Agricultural Science Bulletin,2012,28(15):189-193. |
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| Authors: | Hu Mei Liu Yonggang Zhang Haiying Guo Jianguo Lv Heping Li Xiaorong |
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| Institution: | 1(1Center of Agricultural Test and Measurement,Gansu Academy of Agricultural Sciences,Lanzhou 730070;2Institute of Plant Protection,Gansu Academy of Agricultural Sciences,Lanzhou 730070) |
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| Abstract: | To study the residue dynamic,make an assessment on the security of thiamethoxam in seed coating potato and establish the detection method of potato plant and tuber.The samples were extracted with methanol,concentrated and cleaned up,determined using HPLC equipped with UVD and external standard method.The results showed that,this method was characterized by that recovery rates of plant and tuber were 86.73%-92.58% and 86.03%-93.35%,relative standard deviation were 3.46%-8.19% and 3.65%-6.22%,respectively.LOD at 1.0×10-9g and sensitivity of 0.001 mg/kg.The decline rules of thiamethoxam seed coating in plant of potato followed the first order chemical reactions dynamics equation,60 days after planting,residual quantity of Tthiamethoxam was 33.975 mg/kg which was the primitive quantities of sediment.Accordingly,its half-lives were 12.4 days.Thiamethoxam were not detected in tubers under the condition of this study. |
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| Keywords: | HPLC thiamethoxam seed coating potato residue dynamics |
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