Ti3C2Tx MXene-Based Fluorescent Aptasensor for Detection of Dimethoate Pesticide.
Biosensors (Basel)
; 14(2)2024 Jan 29.
Article
em En
| MEDLINE
| ID: mdl-38391988
ABSTRACT
Dimethoate contaminants in food pose a threat to human health. Rapid and sensitive trace detection methods are required to keep food safe. In this study, a novel fluorescent aptasensor was developed for the sensitive detection of dimethoate based on carbon quantum dots labeled with double-stranded DNA (CQDs-apt-cDNA) and Ti3C2Tx flakes. Under optimal conditions, the aptasensor showed a good linear range of 1 × 10-9 to 5 × 10-5 M for dimethoate with a coefficient of determination (R2) of 0.996. Besides, a low detection limit of 2.18 × 10-10 M was obtained. The aptasensor showed high selectivity in interference samples and good reproducibility with an RSD of 3.06% (<5%) for dimethoate detection. Furthermore, the proposed aptasensor was applied to the detection of dimethoate in apple juice and tap water with satisfactory recoveries from 96.2 to 104.4%. Because of these benefits, this aptasensor has the potential and promise for detecting food contaminants in the food industry.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Praguicidas
/
Técnicas Biossensoriais
/
Elementos de Transição
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Aptâmeros de Nucleotídeos
/
Nitritos
Limite:
Humans
Idioma:
En
Revista:
Biosensors (Basel)
Ano de publicação:
2024
Tipo de documento:
Article
País de afiliação:
China