Fluorescence quenching for chloramphenicol detection in milk based on protein-stabilized Au nanoclusters.
Spectrochim Acta A Mol Biomol Spectrosc
; 149: 615-20, 2015.
Article
em En
| MEDLINE
| ID: mdl-25985125
ABSTRACT
In the present study, we report a simple and rapid method for sensitive and selective determination of chloramphenicol (CAP) based on fluorescence of bovine serum albumin-stabilized Au nanoclusters (BSA-AuNCs). The BSA-AuNCs exhibit strong red emission. Upon addition of CAP to BSA-AuNCs, the fluorescence intensity of AuNCs shows a dramatic decrease attributing to the photo-induced electron transfer process from the electrostatically attached CAP to the BSA-AuNCs. The effects of pH, amount of BSA-AuNCs, temperature and reaction time on the detection of chloramphenicol were investigated. Under the optimal conditions, trace amounts of CAP could be detected. The linear working range is 0.10-70.00 µM with a detection limit 33 nM (S/N=3). In addition, the proposed method has been successfully applied to the detection of CAP in milk samples and largely improves the application of spectral method for quantitative analysis of CAP.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Soroalbumina Bovina
/
Cloranfenicol
/
Leite
/
Nanopartículas Metálicas
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Ouro
Tipo de estudo:
Diagnostic_studies
Limite:
Animals
Idioma:
En
Revista:
Spectrochim Acta A Mol Biomol Spectrosc
Ano de publicação:
2015
Tipo de documento:
Article