文献类型： 外文期刊

作者： Qileng, Aori ¹ ; Liang, Hongzhi ¹ ; Huang, Shule ¹ ; Liu, Weipeng ¹ ; Xu, Zhenlin ² ; Liu, Yingju ¹ ;

作者机构： 1.South China Agr Univ, Coll Mat & Energy, Dept Appl Chem, Key Lab Biobased Mat & Energy,Minist Educ, Guangzhou 510642, Peoples R China

2.South China Agr Univ, Coll Food Sci, Guangdong Prov Key Lab Food Qual & Safety, Guangzhou 510642, Peoples R China

3.Zhejiang Acad Agr Sci, Inst Qual & Stand Agroprod, State Key Lab Managing Biot & Chem Treats Qual &, Hangzhou, Peoples R China

关键词： Ochratoxins; Photoelectrochemistry; Electrochemistry; Immunosensor

期刊名称：SENSORS AND ACTUATORS B-CHEMICAL （ 影响因子：7.46； 五年影响因子：6.743 ）

ISSN：

年卷期： 2020 年 314 卷

页码：

收录情况： SCI

摘要： A ratiometric immunosensor was built to detect different ochratoxins in a mixture by combining broad-specific antibody and antigen, multidimensional signals, and computer programs. This immunosensor used MoS2 NFs/CdS as the photoelectrode to immobilize antigens and ZnS/Ag2S nanocages to capture the secondary antibody. During the immunoreaction recognition, the photoelectrochemical (PEC) current of MoS2 NFs/CdS and the square wave voltammetric (SWV) current of the dissolved Zn2+ from ZnS can be influenced by the deposition of the ZnS/Ag2S label. The results show that the ratio of PEC to SWV current decreased linearly with the logarithm of ochratoxin concentrations in a range from 1 ng/L to 1 mu g/L. The present work provides a possible route to design broad-specific immunosensors and expands the scope of ratiometric biosensors in the detection of a mixture.