A 3D-impedimetric immunosensor based on foam Ni for detection of sulfate-reducing bacteria

被引：52

作者：

Wan, Yi ^{[1
,2
]}

Zhang, Dun ^{[1
]}

Wang, Yi ^{[1
]}

Hou, Baorong ^{[1
]}

机构：

[1] Chinese Acad Sci, Key Lab Corros Sci, Inst Oceanol, Qingdao 266071, Shandong, Peoples R China

[2] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2010年 / 12卷 / 02期

基金：

中国国家自然科学基金;

关键词：

3D-immunosensor; Sulfate-reducing bacteria; Foam Ni; Electrochemical impedance spectroscopy; SALMONELLA-TYPHIMURIUM; IMPEDIMETRIC IMMUNOSENSOR;

D O I：

10.1016/j.elecom.2009.12.017

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A 3D-immunosensor based on simple and efficient trapping platform (foam Ni) combining with adsorption of gold nanoparticles and specific recognition of biological/chemical molecular has been reported for detection of sulfate-reducing bacteria (SRB) using electrochemical impedance spectroscopy (EIS). The impedance spectra were also used to characterize the successful construct and stepwise modification of the impedimetric immunosensors. This results show that a linear relationship between electron-transfer resistance (R-ct) values and the logarithm of the SRB concentrations was obtained for the SRB concentration range of 2.1 x 10(1)-2.1 x 10(7) cfu/ml. Additionally, the fabricated immunosensor shows a high selectivity against other bacteria. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：288 / 291

页数：4

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