乙基多杀菌素在香蕉果实、花瓣和土壤中的残留及消解动态分析  

Analysis of Insecticide Residue and Digestion Dynamics of Spinetoram in Banana Fruits, Petals and Soil

作　　者：夏西亚 付步礼[1] 李强[1] 邱海燕[1] 乐渊[3] 唐良德[1] 刘奎[1,4] 

机构地区：[1]中国热带农业科学院环境与植物保护研究所,海南海口571101 [2]华中农业大学植物科学技术学院,湖北武汉430070 [3]中国热带农业科学院分析测试中心,海南海口571101 [4]农业部热带作物有害生物综合治理重点实验室,海南海口571101

出　　处：《热带作物学报》2017年第7期1331-1336,共6页Chinese Journal of Tropical Crops

基　　金：现代农业产业技术体系建设专项资金(No.CARS-32-04);中央级科研院所基本业务费项目(No.2016hzs1J007)

摘　　要：为评估乙基多杀菌素在香蕉上的安全性使用,本研究采用超高效液相色谱-串联质谱(UPLC-MS/MS)法,检测香蕉植株和土壤中乙基多杀菌素的残留及降解动态。结果表明,乙基多杀菌素在香蕉果实、花瓣和土壤中的检出限(LOD)均为5μg/kg,定量限(LOQ)均为17μg/kg。当乙基多杀菌素在果实、花瓣和土壤中的添加浓度在0.01~0.20 mg/kg时,添加回收率分别为89.6%~95.2%、76.5%~89.8%和75.8%~86.5%,相对标准偏差分别为5.03%~7.10%、5.16%~7.24%和2.26%~5.83%。乙基多杀菌素在香蕉果实、花瓣和土壤中的半衰期分别为5.6、4.5和6.5 d,属于易消解型农药。UPLC-MS/MS法具有灵敏度高、速度快等特点,可利用此法检测香蕉中乙基多杀菌素残留及消解动态。In order to evaluate the safety of spinetoram on bana na, the residue and degradation dynamics of spinetoram in banana were detected by ultra performance liquid chromatography-tandem mass spectrometry（UPLC-MS/MS）. The results showed that the limits of detection（LOD） of spinetoram in banana fruit, petal and soil were both 5 μg/kg. And the limits of quantification（ LOQ） were both validated calculated as 17 μg/kg. At the spiked levels of 0.01-0.20 mg/kg, the average recoveries of acetochlor in fruit, petal and soil were 89.6%-95.2%,76.5%-89.8% and 75.8%-86.5%, and the relative standard deviations was 5.03%-7.10%, 5.16%-7.24% and2.26%-5.83%, respectively. The half-lives of acetochlor in fruit, petal and soil was 5.6 d, 4.5 d and 6.5 d. Taken together, the findings reveal that spinetoram belongs to the easily degradable pesticide type. The present study suggests that UPLC-MS/MS could be applied to detect and analyze spinetoram residues and digestion dynamics in banana.

关 键 词：乙基多杀菌素 香蕉 液相色谱-串联质谱 农药残留 消解动态 

分 类 号：S482.2[农业科学—农药学]