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固相微萃取/二氧化锡气体传感器联用技术对果蔬中有机磷农药残留的快速检测

Fast Detection of Organophosphor Pesticide Residue in Vegetable by SnO₂ Gas Sensor Coupled with Solid Phase Microextraction

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【Author】 Huang Xingjiu1, Wang Lianchao1, Sun Yufeng1, Meng Fanli2, Liu Jinhuai~*2 ~ 1 (Department of Chemistry, University of Science and Technology of China, Hefei 230026) ~ 2 (Hefei Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei 230031)

【机构】中国科学技术大学化学系；中国科学院智能机械研究所；中国科学院智能机械研究所合肥230026；合肥230026；合肥230031；合肥230031；

【摘要】研究了固相微萃取(SPME)和二氧化锡气体传感器的联用技术对果蔬中有机磷农药残留乐果、氧乐果、甲胺磷、乙酰甲胺磷、马拉硫磷、敌百虫等的快速检测。结果表明,在85℃下,解吸8min,二氧化锡气体传感器在2min内完成对有机磷农药残留的快速检测。零解吸时间测量的甲胺磷的动态响应曲线表明,SPME/二氧化锡气体传感器联用技术对分析SPME的解吸平衡非常有利。更多还原

【Abstract】 Fast detection of organophosphor pesticide residue such as dimethoate, omethoate, acephatemet, acephate, malathion, trichlorphon in vegetable by tin oxide gas sensor coupled with solid phase microextraction （SPME） was investigated. Experimental results showed that the pesticide residue were detected in ² min the conditions in this study （the desorption temperature was 85℃ and the time was 8 min）. The dynamic ^response of acephatemet showed that SnO₂/SPME was beneficial to analysis the desorption equilibrium of SPME.更多还原