A Rapid Detection of Pesticide Residue Based on Piezoelectric Biosensor

A piezoelectric biosensor made of macromolecular polymer and carboxyl multi-wall carbon nanotubes (MWNTs-COOH) coated with acetylcholinesterases (AChE) on the Ag-coated crystal surfaces was used to determine pesticide residue in freshly picked radishes 4 and 8 days post application of phoxim and chl...

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Bibliographic Details
Published inProcedia engineering Vol. 15; pp. 4480 - 4485
Main Authors Shang, Zhan-jiang, Xu, Yan-li, Gu, Yun-xu-zi, Wang, Yi, Wei, Dong-xu, Zhan, Li-li
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 2011
Subjects
carbon nanotubes
electrostatic assembly
pesticides
piezoelectric biosensor
pollution
piezoelectric biosensor
carbon nanotubes
pollution
pesticides
electrostatic assembly
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Summary:A piezoelectric biosensor made of macromolecular polymer and carboxyl multi-wall carbon nanotubes (MWNTs-COOH) coated with acetylcholinesterases (AChE) on the Ag-coated crystal surfaces was used to determine pesticide residue in freshly picked radishes 4 and 8 days post application of phoxim and chlorpyrifos. The sensitivity of the method was compared with gas chromatography. The results show that there is no significant difference between the two methods, which indicates that our method can be used to perform the same task as gas chromatography in analyzing pesticide residue. The device is more portable, less expensive and simpler to operate, which can be easily used for pesticide residue detection.
ISSN:1877-7058
1877-7058
DOI:10.1016/j.proeng.2011.08.842