| 25%吡蚜酮·噻虫嗪悬浮剂在水稻生态系统中的残留检测和消解动态 |
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| 引用本文： | 夏志,胡德禹,张钰萍.25%吡蚜酮·噻虫嗪悬浮剂在水稻生态系统中的残留检测和消解动态[J].精细与专用化学品,2012,20(6):46-50. |
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| 作者姓名： | 夏志 胡德禹 张钰萍 |
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| 作者单位： | 贵州大学精细化工研究开发中心,贵州贵阳,550025 |
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| 基金项目： | 农业部农药检定所资助项目 |
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| 摘 要： | 运用高效液相色谱分析技术测定25%吡蚜酮·噻虫嗪悬浮剂在稻田水、土壤、植株和糙米中的消解动态和最终残留。吡蚜酮在稻田水、土壤和植株中的消解动态方程分别为c=0.134e-0.12t,C=1.377e-0.13t及C=0.741e-0.10t。噻虫嗪在稻田水、土壤和植株中的消解动态方程分别为C=0.114e-0.12t,C=1.118e-0.10t及C=0.626e-0.12t。最终残留结果显示,25%吡蚜酮·噻虫嚷悬浮剂施用剂量为0.0525～0.0788g/m2时,施药距水稻的安全收获间隔期为21d。
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| 关 键 词： | 吡蚜酮 噻虫嗪 水稻 消解动态 最终残留 |
25 % Pymetrozine and thiamethoxam suspension residues detection and degradation in the rice ecosystem |
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| XIA Zhi,HU De-yu,ZHANG Yu-ping.25 % Pymetrozine and thiamethoxam suspension residues detection and degradation in the rice ecosystem[J].Fine and Specialty Chemicals,2012,20(6):46-50. |
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| Authors: | XIA Zhi HU De-yu ZHANG Yu-ping |
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| Affiliation: | (Center for Research and Development of Fine Chemicals,Guizhou University,Guiyang 550025,China) |
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| Abstract: | In this work,we developed a novel method of simultaneous determination of residues and dynamics degradation for both pymetrozine and thiamethoxam in soil,rice straw,paddy water and brown rice.The kinetics study of pymetrozine residue in water,soil,and rice straw were C = 0.134e-0.12t,C = 1.377e-0.13t,and C = 0.741e-0.10t,respectively.And the kinetics study of thiamethoxam in water,soil,and rice straw were C = 0.114e-0.12t,C = 1.118e-0.10t,and C = 0.626e-0.12t,respectively.The results show that a dosage of 0.0525～0.0788 g/m2 of 25%pymetrozine and thiamethoxam suspension could be used in rice field ecosystem with harvest interval of 21 days. |
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| Keywords: | pymetrozine thiamethoxam rice dynamic degradation inal residue |
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