| 韦典1, 杨珂1, 曾东强1, 王彦辉1, 2, 王忠文1, 刘晓亮1*.保鲜剂抑霉唑在香蕉中的消解动态及残留分析[J].植物保护,2016,42(4):174-178. |
| 保鲜剂抑霉唑在香蕉中的消解动态及残留分析 |
| Degradation dynamics and residue analysis of imazalil in banana |
| 投稿时间：2015-06-05 修订日期：2015-07-31 |
| DOI： |
| 中文关键词: 抑霉唑 香蕉 消解 残留 |
| 英文关键词:imazalil banana degradation residue |
| 基金项目:广西自然科学基金(2015GXNSFBA139062, 2013GXNSFBA019049); 广西大学科研基金项目(XJZ130368); 国家现代农业产业技术体系广西创新团队建设(nycytxgxcxtd-03-10, nycytxgxcxtd-04-18-2); 广西‘特聘专家’工程专项经费(2013B015) |
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| 中文摘要: |
| 采用GC-uECD法探索了室内自然温度和12~14℃恒温贮藏条件下抑霉唑在香蕉中的消解规律和最终残留量。方法的定量限为1~2 μg/kg, 在添加0.02、0.2、2 mg/kg范围内平均回收率为94.7%~107.6%, 相对标准偏差为1.0%~7.4%。采用该方法测定抑霉唑在香蕉中的残留, 将抑霉唑按有效成分300~450 mg/kg在香蕉上使用后, 其在香蕉上的原始沉积量为1.596~1.848 mg/kg, 抑霉唑在香蕉中的消解行为符合一级降解动力学方程, 在室内自然温度和12~14℃恒温贮藏条件下半衰期分别为8.9~10.2 d和13.3 d。 |
| 英文摘要: |
| Degradation dynamics and residue analysis of imazalil in banana were detected by GC-uECD with external standard method after the samples were extracted with acetonitrile and the extracts were cleaned up by PSA. The limits of detections (LOQs) were in the range of 1-2 μg/kg. The recoveries of imazalil were in the range of 94.7%-107.6% at the spiked levels of 0.02, 0.2 and 2 mg/kg in the whole banana and the pulp matrixes, and the relative standard deviations (RSDs) were in the range of 1.0%-7.4%. The method can be used for the determination of imazalil residues in banana. The results showed that imazalil initial residues in banana were in the range of 1.596-1.848 mg/kg after fruit soaking with imazalil of 300-400 mg/kg. The degradation dynamics of imazalil in banana accorded with the one-level kinetics equation, and the half-lives of imazalil stored at room temperature and 12-14℃ were 8.9-10.2 d and 13.3 d, respectively. |
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