Graphene quantum dot modified screen printed immunosensor for the determination of parathion.
Anal Biochem
; 523: 1-9, 2017 04 15.
Article
em En
| MEDLINE
| ID: mdl-28161099
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 electrochemical 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 0.01-106 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.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Paration
/
Impressão
/
Técnicas Biossensoriais
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Pontos Quânticos
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Anticorpos Imobilizados
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Técnicas Eletroquímicas
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Grafite
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Inseticidas
Limite:
Humans
Idioma:
En
Revista:
Anal Biochem
Ano de publicação:
2017
Tipo de documento:
Article
País de afiliação:
Índia