Acetylcholinesterase Sensor with Patterned Structure for Detecting Organophosphorus Pesticides Based on Titanium Dioxide Sol-gel Carrier

被引：15

作者：

Hu, Huaying ^{[1
]}

Wang, Bo ^{[1
]}

Li, Yiru ^{[1
]}

Wang, Pengchang ^{[1
]}

Yang, Lianqiao ^{[1
]}

机构：

[1] Shanghai Univ, Key Lab Adv Display & Syst Applicat, Minist Educ, Yanchang Rd 149, Shanghai 200072, Peoples R China

来源：

ELECTROANALYSIS | 2020年 / 32卷 / 08期

基金：

中国国家自然科学基金;

关键词：

Patterned structure; Biosensor; AChE; DDVP; REDUCED GRAPHENE OXIDE; TRANSITION-METAL CARBIDES; SENSITIVE DETECTION; GOLD NANOPARTICLES; BIOSENSOR; ELECTRODE; CHLORPYRIFOS; NANOCOMPOSITES; MICROEXTRACTION; NANOCARRIERS;

D O I：

10.1002/elan.202060027

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

In this paper, novel and stable acetylcholinesterase (AChE) sensor with patterned structure for detecting organophosphorus pesticides (OPs) based on titanium dioxide sol-gel carrier was proposed and prepared. Biosensor was assembled by dropping titanium oxide, chitosan (CS) and enzyme to the surface of the glass carbon step by step. The concentration range of the sensor detection for dichlorvos (DDVP) is 1.13 nM to 22.6 mu M, and the limit of detection (LOD) is 0.23 nM. It can also detect dichlorvos in cabbage juice samples accurately. The preparation of biosensor adopted a patterned novel structure for the first time, which opens a new way for the structure optimization of organophosphorus pesticide sensor.

引用

页码：1834 / 1842

页数：9

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