Electrochemical detection of heavy metals in rice, milk and tap water using free-standing carbon felt electrodes.
Food Chem
; 460(Pt 2): 140450, 2024 Dec 01.
Article
em En
| MEDLINE
| ID: mdl-39089017
ABSTRACT
In this work, a carbon felt (CF) was utilized to fabricate electrochemical sensors for the simultaneous detection of Cd2+, Pb2+ and Hg2+. The working conditions of CF sensors including thermal activation, electrolytes, and enrichment potentials and times were systematically investigated. Under the optimal detection conditions, the resulting sensors showed good linearity in the concentration ranges of 3-10,000, 2-10,000 and 5-10,000 µg/L for the detection of Cd2+, Pb2+ and Hg2+, corresponding to the detection limits of 1, 0.5, and 1 µg/L, respectively. Meanwhile, the resulting electrochemical sensor demonstrates excellent reproducibility and anti-interference. In addition, the CF electrodes maintain good stability even after 180 days of storage at room temperature. In real water, rice and milk samples, the CF electrodes have been successfully utilized for the detection of Cd2+, Pb2+ and Hg2+ and the results were in agreement with those obtained from the inductively coupled plasma mass spectrometry.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Oryza
/
Carbono
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Metais Pesados
/
Leite
/
Eletrodos
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Técnicas Eletroquímicas
Limite:
Animals
Idioma:
En
Revista:
Food Chem
/
Food chem
/
Food chemistry
Ano de publicação:
2024
Tipo de documento:
Article
País de publicação:
Reino Unido