| 段劲生1，王梅1，董旭1，孙明娜1，肖青青1，朱玉杰1，孙海滨2，刘艳萍2，高同春1*.氯虫苯甲酰胺在水稻及稻田环境中的残留动态[J].植物保护,2016,42(1):93-98. |
| 氯虫苯甲酰胺在水稻及稻田环境中的残留动态 |
| Residue and degradation of chlorantraniliprole in rice and the environment |
| 投稿时间：2014-12-02 修订日期：2015-02-28 |
| DOI： |
| 中文关键词: 氯虫苯甲酰胺 残留 水稻 稻田环境 |
| 英文关键词:Chlorantraniliprole residue rice rice field |
| 基金项目:安徽省农科院科技创新团队项目(14C1105); 国家科技基础性工作专项重点项目(2013FY113400); 公益性行业(农业)科研专项(201403030) |
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| 中文摘要: |
| 采用田间试验方法, 研究了氯虫苯甲酰胺在稻田水、土壤和水稻植株中的消解动态, 测定了氯虫苯甲酰胺在水稻和土壤中的最终残留量。稻田水和土壤样品采用丙酮提取, 水稻样品用乙腈溶液浸泡提取, 经玻璃层析柱净化, HPLC 紫外分析测定。结果表明, 稻田水、土壤、水稻植株、谷壳、糙米中氯虫苯甲酰胺添加浓度为0.005~1.0 mg/kg时, 平均回收率为85.06%~95.83%, 变异系数在2.08%~5.77%之间。方法的最低检测浓度为:稻田水0.005 mg/kg, 土壤0.01 mg/kg, 水稻植株0.02 mg/kg, 谷壳0.02 mg/kg, 糙米0.01 mg/kg。氯虫苯甲酰胺在稻田水、土壤和水稻植株中的消解动态均符合一级动力学方程, 半衰期分别为3.1~5.0 d、6.6~9.0 d、8.0~9.9 d。以33.86 g/hm2和50.80 g/hm2间隔14 d 施用氯虫苯甲酰胺2次和3次, 末次施药21 d后氯虫苯甲酰胺的最高残留量为:土壤0.217 mg/kg, 水稻植株0.879 mg/kg, 谷壳0.389 mg/kg, 糙米0.018 mg/kg。氯虫苯甲酰胺在糙米中的残留量低于我国和食品法典委员会(CAC)及欧盟的最大残留限量(MRL)标准。 |
| 英文摘要: |
| The residue dynamics of chlorantraniliprole in paddy water, soil and rice plant was studied, and its final residue in paddy and soil was determined by using field test. The residues of paddy water and soil samples were extracted with acetone and rice samples were cleaned up by glass chromatographic column after the extraction with acetonitrile, and determined by HPLC-UV. The results showed that, while the spiked concentration of chlorantraniliprole in paddy water, soil, rice plant, rice shell and brown rice ranged from 0.005 mg/kg to 1.0 mg/kg, the average recovery was 85.06%-95.83% with the variation coefficient of 2.08%-5.77%. The minimum detectable mass fraction in paddy water, soil, rice plant, rice shell and brown rice samples were 0.005, 0.01, 0.02, 0 02, 0.01 mg/kg, respectively. Degradation of chlorantraniliprole in paddy water, soil and rice plant conformed to chemical kinetic equation. The half-life was 3.1-5.0 days in paddy water, 6.6-9.0 days in soil and 8.0-9.9 days in plant. Chlorantraniliprole was sprayed twice or three times at a 14 days interval with the application dose of 33.86 g/hm2 and 50.80 g/hm2, the final maximum residue of chlorantraniliprole after 21 days were 0.217 mg/kg in soil, 0.879 mg/kg in rice plant, 0.389 mg/kg in rice shell and 0.018 mg/kg in brown rice, respectively. The residue in brown rice could be lower than the MRL (maximum residue limit) in China, CAC and EU. |
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