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首页> 外文期刊>Journal of environmental science and health >Acetylcholinesterase-polyaniline biosensor investigation of organophosphate pesticides in selected organic solvents
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Acetylcholinesterase-polyaniline biosensor investigation of organophosphate pesticides in selected organic solvents

机译：选定有机溶剂中有机磷酸酯农药的乙酰胆碱酯酶-聚苯胺生物传感器研究

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The behavior of an amperometric organic-phase biosensor consisting of a gold electrode modified first with a mercaptobenzothiazole self-assembled monolayer, followed by electropolymerization of polyaniline in which acetylcholinesterase as enzyme was immobilized, has been developed and evaluated for organophosphorous pesticide detection. The voltammetric results have shown that the formal potential shifts anodically as the Au/MBT/PANI/AChE/PVAc thick-film biosensor responded to acetylthiocholine substrate addition under anaerobic conditions in selected organic solvent media containing 2% v/v 0.05 M phosphate buffer, 0.1 M KC1 (pH 7.2) solution. Detection limits in the order of 0.147 ppb for diazinon and 0.172 ppb for fenthion in acetone-saline phosphate buffer solution, and 0.180 ppb for diazinon and 0.194 ppb for fenthion in ethanol-saline phosphate buffer solution has been achieved.
机译：已开发出一种电流型有机相生物传感器的行为，该行为包括先用巯基苯并噻唑自组装单层修饰的金电极，然后将其中固定有乙酰胆碱酯酶作为酶的聚苯胺进行电聚合，并对其进行有机磷农药检测进行评估。伏安法结果表明，当Au / MBT / PANI / AChE / PVAc厚膜生物传感器在厌氧条件下，在含有2％v / v 0.05 M磷酸盐缓冲液的选定有机溶剂介质中，对乙酰基硫代胆碱底物添加产生响应时，形式电位会发生阳极移位。 0.1 M KCl（pH 7.2）溶液。在丙酮-盐水磷酸盐缓冲溶液中，对二嗪农和对硫磷的检出限分别为0.147 ppb和0.172 ppb，在乙醇-盐水磷酸盐缓冲溶液中对二嗪农和对硫磷的检出限为0.180 ppb。

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