Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.22/3055
Título: New sensing materials of molecularly-imprinted polymers for the selective recognition of Chlortetracycline
Autor: Guerreiro, J. Rafaela L.
Freitas, Victor
Sales, M. Goreti F.
Palavras-chave: Chlortetracycline
Molecularly-imprinted sensors
Data: 2011
Editora: Elsevier
Relatório da Série N.º: Microchemical Journal; Vol. 97, Issue 2
Resumo: As a result of the stressful conditions in aquaculture facilities there is a high risk of bacterial infections among cultured fish. Chlortetracycline (CTC) is one of the antimicrobials used to solve this problem. It is a broad spectrum antibacterial active against a wide range of Gram-positive and Gram-negative bacteria. Numerous analytical methods for screening, identifying, and quantifying CTC in animal products have been developed over the years. An alternative and advantageous method should rely on expeditious and efficient procedures providing highly specific and sensitive measurements in food samples. Ion-selective electrodes (ISEs) could meet these criteria. The only ISE reported in literature for this purpose used traditional electro-active materials. A selectivity enhancement could however be achieved after improving the analyte recognition by molecularly imprinted polymers (MIPs). Several MIP particles were synthesized and used as electro-active materials. ISEs based in methacrylic acid monomers showed the best analytical performance according to slope (62.5 and 68.6 mV/decade) and detection limit (4.1×10−5 and 5.5×10−5 mol L−1). The electrodes displayed good selectivity. The ISEs are not affected by pH changes ranging from 2.5 to 13. The sensors were successfully applied to the analysis of serum, urine and fish samples.
Peer review: yes
URI: http://hdl.handle.net/10400.22/3055
ISSN: 0026-265X
Versão do Editor: http://www.sciencedirect.com/science/article/pii/S0026265X1000161X
Aparece nas colecções:ISEP – GRAQ – Artigos

Ficheiros deste registo:
Ficheiro Descrição TamanhoFormato 
ART_JGuerreiro_2011_GRAQ.pdf95,84 kBAdobe PDFVer/Abrir

FacebookTwitterDeliciousLinkedInDiggGoogle BookmarksMySpace
Formato BibTex MendeleyEndnote Degois 

Todos os registos no repositório estão protegidos por leis de copyright, com todos os direitos reservados.