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| Determination of Nicotinoid Residues in Complicated Matrix Vegetables by Solid Phase Extraction and HPLC Method |
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| DOI：10.3969/j.issn.1004-4957.年份.月份 |
| KeyWord:nicotinoid residue insecticide HPLC SPE vegetable |
| Author | Institution |
| HOU Ruyan1,BIAN Hongzheng2,ZHAO Xiuxia1,HU Yifang1, SU Ting1,WANG Xiaohui1,2,WAN Xiaochun1 |
1.安徽农业大学茶与食品科技学院教育部、农业部茶叶生物化学与生物技术重点开放实验室;2.农业部农产品质量安全监督检验测试中心（合肥） |
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| Abstract: |
| A simple and sensitive high performance liquid chromatographic（HPLC） method was developed for the simultaneous determination of 9 nicotinoid insecticide residues,including dinotefuran，nitenpyram，flonicamid，thiamethoxam，imidacloprid,clothianidin，imidaclothiz，acetamiprid and thiacloprid,in sulphur containing vegetables samples. The extract efficiencies of several solvent and the cleanup capacities of different SPE cartridges were compared. The vegetables were extracted with acetonitrile and cleaned up on an Envi-Carb/PSA cartridge. The nicotinoid insecticides were eluted with acetonitrile and detected with UV detector. The calibration curves showed good linearities in the range of 002-10 mg/L with correlative coefficient more than 0999. The limits of quantitation（LOQ） were 002 mg/kg for all 9 pesticide except for thiacloprid with LOQ of 005 mg/kg. The recoveries of 9 pesticides from vegetable sample spiked at three concentration levels of 002 mg/kg,005 mg/kg and 05 mg/kg ranged from 67% to 110% with RSDs less than 186%. The established method was simple,sensitive and accurate,and was suitable for the routine detection of nicotinoid pesticides residues in vegetables. |
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