Determination of tetracycline in environmental water samples at a graphite-polyurethane composite electrode

Autor(es)

Calixto, Carolina M. F. ^[1] ; Cervini, Priscila ^[1] ; Cavalheiro, Eder T. G. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Inst Quim Sao Carlos, BR-13566590 Sao Carlos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of the Brazilian Chemical Society; v. 23, n. 5, p. 938-943, MAY 2012.
• Citações Web of Science: 17

Resumo

A bare graphite-polyurethane composite was evaluated in the tetracycline (TC) determination in natural water samples. Using differential pulse voltammetry (DPV), a linear response was observed in the range of 4.00-40.0 µmol L-1 with limit of detection of 2.80 µmol L-1, without the need of surface renewing between successive runs. During the tetracycline determination in water samples, recoveries between 92.6 and 100% were found. The results for TC determination in water samples after a pre-concentration stage agreed with spiked value at a 95% confidence level according to student t-test. (AU)

• Processo FAPESP: 10/11080-7 - Preparação e Aplicação de Eletrodos Compósitos à Base de Grafite e Polímeros: Modificação com Sílicas Organofuncionalizadas e Polímeros Molecularmente Impressos
• Beneficiário: Éder Tadeu Gomes Cavalheiro
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 08/02590-1 - Utilização de eletrodos compósitos na análise voltamétrica de fármacos em amostras biológicas e/ou ambientais.
• Beneficiário: Carolina Maria Fioramonti Calixto
• Modalidade de apoio: Bolsas no Brasil - Doutorado