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首页> 外文期刊>RSC Advances >A highly sensitive multi-catalytic sensing system for organophosphorus and organochlorine pesticides based on the peroxidase-like activity of ferric ions
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A highly sensitive multi-catalytic sensing system for organophosphorus and organochlorine pesticides based on the peroxidase-like activity of ferric ions

机译：基于三价铁离子过氧化物酶样活性的有机磷和有机氯农药的高灵敏度多催化传感系统

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摘要

Developing rapid, efficient and highly sensitive sensing systems for organophosphorus (OPs) and organochlorine pesticides is important due to their potential damage to human health. Considering that Fe3+ ions were recently found to have much higher peroxidase-like activity than that of Fe3O4 magnetic nanoparticles, in this work, a novel and highly sensitive multi-catalytic sensing system has been successfully developed for OPs and organochlorine pesticides, on the basis of the color reaction of 3,3',5,5'-tetramethyl benzidine (TMB) driven by Fe3+ ions, together with two enzymatic catalytic systems of acetylcholinesterase (AChE) and choline oxidase (CHO). Sub nM level limits of detection could be achieved for four tested OPs and organochlorine pesticides. Furthermore, several fruit/vegetable samples were successfully employed for evaluating this established sensing system.
机译：由于有机磷（OPs）和有机氯农药对人体健康的潜在损害，因此开发快速，高效和高度灵敏的传感系统非常重要。考虑到最近发现Fe3 +离子具有比Fe3O4磁性纳米颗粒高的类似过氧化物酶的活性，在这项工作中，基于OPs和有机氯农药，已经成功开发了一种新颖且高度灵敏的多催化传感系统。 Fe3 +离子驱动的3,3'，5,5'-四甲基联苯胺（TMB）的显色反应，以及乙酰胆碱酯酶（AChE）和胆碱氧化酶（CHO）的两个酶催化体系。对于四种经测试的OP和有机氯农药，可以达到低于nM的检测限。此外，成功地采用了几种水果/蔬菜样品来评估这种已建立的传感系统。

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