| 氯虫苯甲酰胺和高效氯氟氰菊酯在豇豆和土壤中的残留行为 |
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投稿时间：2016-02-05
修订日期：2016-05-19
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| 引用本文：张希跃,吴迪,潘洪吉,等.氯虫苯甲酰胺和高效氯氟氰菊酯在豇豆和土壤中的残留行为[J].农药学学报,2016,18(4):481-489. |
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| 基金项目:北京市科学技术委员会项目（Z151100001215015） |
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| 中文摘要:建立了采用分散固相萃取法进行样品前处理，分别用液相色谱-质谱联用和气相色谱检测14%氯虫苯甲酰胺·高效氯氟氰菊酯微囊悬浮剂中2种有效成分在豇豆和土壤中的残留量及消解动态的方法。结果表明：豇豆和土壤中分别添加0.005～1 mg/kg 4个水平的氯虫苯甲酰胺和高效氯氟氰菊酯，其平均回收率为80%～105%，相对标准偏差为0.70%～9.5%。北京和海南2地氯虫苯甲酰胺和高效氯氟氰菊酯在豇豆中的半衰期为4～6 d，土壤中的为10～24 d。成熟时采收，豇豆中氯虫苯甲酰胺和高效氯氟氰菊酯的残留量均低于0.2 mg/kg。推荐14%氯虫苯甲酰胺·高效氯氟氰菊酯微囊悬浮剂在豇豆上的使用剂量为有效成分45 g/hm2，使用方式为喷雾，施药次数不超过3次，施药间隔期为7 d，安全间隔期为5 d。 |
| 中文关键词:氯虫苯甲酰胺 高效氯氟氰菊酯 豇豆 土壤 分散固相萃取 残留 消解 |
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| Residual behavior of chlorantraniliprole and lambda-cyhalothrin in cowpea and soil |
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| Abstract:The residue and dissipation dynamic of chlorantraniliprole and lambda-cyhalothrin in cowpea and soil were investigated. A dispersive solid phase extraction method was established for the pretreatment, while LC-MS/MS and GC-ECD chromatography were employed for the analysis. The result has shown that the recovery rate ranges from 80% to 105% and the variation coefficient ranges from 0.70% to 9.5%, when chlorantraniliprole and lambda-cyhalothrin are added to the cowpea and soil at the concentration ranging from 0.005 to 1 mg/kg (four concentrations). The half-lives of chlorantraniliprole and lambda-cyhalothrin in cowpea at Beijing and Hainan are 4-6 days; The half-lives of chlorantraniliprole and lambda-cyhalothrin in soil in the above mentioned two regions are 10-24 days. The residues in stems of cowpea were lower than 0.2 mg/kg at the harvest time. We recommend Good Agricultural Practices of chlorantraniliprole and lambda-cyhalothrin 14% aqueous capsule suspension (CS) used in cowpea are as follows:maximum using dose is 45 g a. i/hm2, spray at growth phase and no more than 3 times, applying pesticide interval is 7 days, and preharveat interval is 5 days. |
| Key words:chlorantraniliprole lambda-cyhalothrin dispersive solid phase extraction residue dissipation |
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