CAS OpenIR  > 中科院上海应用物理研究所2004-2010年
An electrochemical sensor for pesticide assays based on carbon nanotube-enhanced acetycholinesterase activity
Chen, HD; Zuo, XL; Su, S; Tang, ZZ; Wu, AB; Song, SP(宋世平); Zhang, DB; Fan, CH(樊春海); Zhang, DB (reprint author), Shanghai Jiao Tong Univ, Coll Life Sci & Biotechnol, Shanghai 200240, Peoples R China
2008
Source PublicationANALYST
ISSN0003-2654
Volume133Issue:9Pages:1182
AbstractThere has been urgent demand for rapid, sensitive and cost-effective pesticide assay technologies due to the global attention of environmental and food-safety problems. Acetycholinesterase (AChE)-based electrochemical sensors have attracted significant interest toward this goal. In this contribution, we introduced multiwalled carbon nanotubes (MWNTs) into our sensor design, where they played dual enhancement roles; first is that MWNTs loaded on glassy carbon (GQ electrodes significantly increase surface areas, facilitating the electrochemical polymerization of prussian blue (PB), a redox mediator for the electrochemical oxidation of the enzymatic product, thiocholine (TCh). Second, MWNTs enhance the enzymatic activity of AChE, as manifested by the decreased Michaelis-Menten constant (K-m). As a result of these two important enhancement factors offered by MWNTs, our electrochemical pesticide sensor exhibited rapid response and high sensitivity toward the detection of a series of pesticides. Moreover, we demonstrated that this sensor was stable, reproducible and selective enough for detection in real samples.
Subject AreaChemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
Indexed BySCI
Language英语
Funding Project应物所项目组
WOS IDWOS:000259449400009
Citation statistics
Cited Times:71[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/7644
Collection中科院上海应用物理研究所2004-2010年
Corresponding AuthorZhang, DB (reprint author), Shanghai Jiao Tong Univ, Coll Life Sci & Biotechnol, Shanghai 200240, Peoples R China
Recommended Citation
GB/T 7714
Chen, HD,Zuo, XL,Su, S,et al. An electrochemical sensor for pesticide assays based on carbon nanotube-enhanced acetycholinesterase activity[J]. ANALYST,2008,133(9):1182.
APA Chen, HD.,Zuo, XL.,Su, S.,Tang, ZZ.,Wu, AB.,...&Zhang, DB .(2008).An electrochemical sensor for pesticide assays based on carbon nanotube-enhanced acetycholinesterase activity.ANALYST,133(9),1182.
MLA Chen, HD,et al."An electrochemical sensor for pesticide assays based on carbon nanotube-enhanced acetycholinesterase activity".ANALYST 133.9(2008):1182.
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