| 刘金胜2#, 湛 优1#, 蔡志敏2, 李治军2, 刘祥英1*.茚嗪氟草胺及其代谢物在柑橘和土壤中的残留及消解动态[J].植物保护,2021,47(1):182-187. |
| 茚嗪氟草胺及其代谢物在柑橘和土壤中的残留及消解动态 |
| Residues and dissipation dynamic of indaziflam and its metabolites in orange and soil |
| 投稿时间：2019-10-09 修订日期：2020-01-07 |
| DOI：DOI:10.16688/j.zwbh.2019540 |
| 中文关键词: 茚嗪氟草胺 残留 消解动态 柑橘 |
| 英文关键词:indaziflam residue dissipation dynamics orange |
| 基金项目:国家自然科学基金(31672043); 湖南省自然科学基金(2018JJ2165) |
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| 中文摘要: |
| 为明确茚嗪氟草胺及其代谢物indaziflam-diaminotriazine (IND-D), indaziflam-carboxylic acid (IND-C), indaziflam-triazine-indanone (IND-T), indaziflam-hydroxyethyl (IND-H), indaziflam-olefin (IND-O)在柑橘和土壤中的残留消解动态及最终残留, 样品采用乙腈提取, 二氯甲烷净化, 液相色谱-串联质谱法(LC-MS/MS)检测?茚嗪氟草胺, IND-C, IND-T, IND-H和 IND-O在柑橘(果皮?果肉?全果)和土壤中的最低检测浓度(LOQ)为0.01 mg/kg, IND-D 的LOQ为0.02 mg/kg?残留消解动态试验结果表明, 茚嗪氟草胺在柑橘园土壤中的半衰期为15.07~16.12 d, 在柑橘中的残留量低于LOQ, 其代谢物在柑橘和土壤中的残留量皆低于LOQ?最终残留试验结果表明, 500 g/L茚嗪氟草胺悬浮剂分别按有效成分用量100 g/hm2和150 g/hm2于杂草出苗前定向封闭施药1次, 柑橘收获期(药后86 d)茚嗪氟草胺及其代谢物在柑橘和土壤中的残留量皆低于LOQ? |
| 英文摘要: |
| In order to determine the dissipation dynamic and final residues of indaziflam 500 g/L SC and its metabolites, including indaziflam-diaminotriazine (IND-D), indaziflam-carboxylic acid (IND-C), indaziflam-triazine-indanone (IND-T), indaziflam-hydroxyethyl (IND-H) and indaziflam-olefin (IND-O), in orange (peel, flesh, whole fruit) and soil, the samples were extracted by acetonitrile, purified by dichloromethane, and detected by liquid chromatography-mass spectrometry (LC-MS/MS). The limits of quantitation (LOQs) of indaziflam, IND-C, IND-T, IND-H and IND-O in the peel, flesh, whole fruit of orange and soil were 0.01 mg/kg and that of IND-D was 0.02 mg/kg. Digestion dynamic analysis showed that the half-life of indaziflam in soil was 15.07-16.12 d. However, the residues of indaziflam’s metabolites in the peel, flesh, whole fruit and soil were below their corresponding LOQs. Under the application of indaziflam at 100 g/hm2 and 150 g/hm2in the soil at the weed pre-emergence period, the final residues of indaziflam and its metabolites in orange and soil were below their corresponding LOQs when the orange was ripe and harvested (86 d after treatment). |
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