Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.22/2889
Título: Flow amperometric determination of carbofuran and fenobucarb
Autor: Sales, M. Goreti F.
Vaz, M. Carmo V. F.
Delerue-Matos, Cristina
Almeida, Sofia A. A.
Barroso, M. Fátima
Ferreira, Helder A. O.
Palavras-chave: Amperometry
Flow-injection analysis
Data: 2008
Editora: Taylor & Francis
Relatório da Série N.º: International Journal of Environmental Analytical Chemistry; Vol. 88, Issue 1
Resumo: A simple, rapid, and precise amperometric method for quantification of N-methylcarbamate pesticides in water samples and phytopharmaceuticals is presented. Carbofuran and fenobucarb are the target analytes. The method is developed in flow conditions providing the anodic oxidation of phenolic-based compounds formed after alkaline hydrolysis. Optimization of instrumental and chemical variables is presented. Under the optimal conditions, the amperometric signal is linear for carbofuran and fenobucarb concentrations over the range of 1.0*10-7 to 1.0*10-5 molL-1, with a detection limit of about 2 ngmL-1. The amperometric method is successfully applied to the analysis of spiked environmental waters and commercial formulations. The proposed method allows 90 samples to be analysed per hour, using 500 mL of sample, and producing wastewaters of low toxicity. The proposed method permits determinations at the mgL 1 level and offers advantages of simplicity, accuracy, precision, and applicability to coloured and turbid samples, and automation feasibility.
Peer review: yes
URI: http://hdl.handle.net/10400.22/2889
ISSN: 0306-7319
Versão do Editor: http://www.tandfonline.com/doi/abs/10.1080/03067310701461573#.UooGJH9qyZQ
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