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Graphene quantum dot modified screen printed immunosensor for the determination of parathion

Title
Graphene quantum dot modified screen printed immunosensor for the determination of parathion
Author
김기현
Keywords
Graphene quantum dots; Immunosensor; Electrochemical impedance spectroscopy; Parathion; Screen-printed electrode
Issue Date
2017-04
Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
Citation
ANALYTICAL BIOCHEMISTRY, v. 523, page. 1-9
Abstract
The widespread use of pesticides has immense effect on increased crop productions. However, they are also responsible for posing detrimental health hazards and/or for contaminating the environment with chemical residues. A routine and an on-field detection of pesticide residues in different food, water, and soil samples has become a need of the hour for which biosensors can offer a viable alternative. The present work reports a functionalized graphene quantum dot (GQD) based screen printed electro-chemical immunosensor for the detection of parathion. The application of GQDs has permitted the realization of a sensitive, robust, and reproducible sensor unlike those carried out earlier for the similar purposes. This immunosensor exhibited a dynamic linear response for parathion within the range of 0.01 -10(6) ng/L with a very low detection limit of 46 pg/L. According to the analysis of potential interferences, the proposed sensor was specifically detecting parathion even in the presence of its metabolite, paraoxon. The investigations of the proposed sensing approach with respect to stability, response reproducibility, and regeneration have fully supported its potential practical applicability. (C) 2017 Elsevier Inc. All rights reserved.
URI
https://www.sciencedirect.com/science/article/pii/S0003269717300489?via%3Dihubhttps://repository.hanyang.ac.kr/handle/20.500.11754/113845
ISSN
0003-2697; 1096-0309
DOI
10.1016/j.ab.2017.01.026
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > CIVIL AND ENVIRONMENTAL ENGINEERING(건설환경공학과) > Articles
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