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题名: Determination of organophosphate and carbamate pesticides based on enzyme inhibition using a pH-sensitive fluorescence probe
作者: Jin, SY;  Xu, ZC;  Chen, JP;  Liang, XM;  Wu, YN;  Qian, XH
关键词: acetylcholinesterase ;  fluorescence probe ;  flow-injection analysis ;  organophosphate pesticides ;  carbamate pesticides ;  vegetable juices
刊名: ANALYTICA CHIMICA ACTA
发表日期: 2004-10-04
DOI: 10.1016/j.aca.2004.05.030
卷: 523, 期:1, 页:117-123
收录类别: SCI
文章类型: Article
项目归属: 103
产权排名: 1;1
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Analytical
研究领域[WOS]: Chemistry
英文摘要: A flow injection system for the determination of organophosphate and carbamate pesticides is described. A sensitive fluorescence probe was synthesized and used as the pH indicator to detect the inhibition of the enzyme acetylcholinesterase (ACNE). The percentage inhibition of enzyme activity is correlated to the pesticide concentration. Several parameters influencing the performance of the system are discussed. The detection limits of 3.5, 50, 12 and 25 mug/l for carbofuran, carbaryl, paraoxon and dichlorvos, in pure water, respectively were achieved with an incubation time of 10 min. A complete cycle of analysis, including incubation time, took 14 min. The detection system has been applied to the determination of carbofuran in spiked vegetable juices (Chinese cabbage and cole), achieving recovery values between 93.2 and 107% for Chinese cabbage juice and 108 and 118% for cole juice at the different concentration levels assayed. (C) 2004 Elsevier B.V. All rights reserved.
关键词[WOS]: FLOW-INJECTION ANALYSIS ;  IMMOBILIZED ACETYLCHOLINESTERASE ;  BIOSENSOR ;  PARAOXON ;  CHOLINESTERASE ;  SENSOR ;  INSECTICIDES ;  EMISSION ;  REACTOR ;  SAMPLES
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000224039700017
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/81215
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116012, Peoples R China
2.Dalian Univ Technol, Dept Fine Chem Engn, Dalian 116012, Peoples R China
3.Natl Inst Nutr & Food Safety, Chinese Ctr Dis Control & Prevent, Beijing 100050, Peoples R China

Recommended Citation:
Jin, SY,Xu, ZC,Chen, JP,et al. Determination of organophosphate and carbamate pesticides based on enzyme inhibition using a pH-sensitive fluorescence probe[J]. ANALYTICA CHIMICA ACTA,2004,523(1):117-123.
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