Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.22/2995
Título: Determination of ametryn in soils via microwave-assisted solvent extraction coupled to anodic stripping voltammetry with a gold ultramicroelectrode
Autor: Tavares, Oriza
Morais, Simone
Paíga, Paula
Delerue-Matos, Cristina
Palavras-chave: Ametryn
Gold ultramicroelectrode
Stripping voltammetry
Spiked soil samples
Microwave-assisted solvent extraction
Data: 2005
Editora: Springer-Verlag
Relatório da Série N.º: Analytical and Bioanalytical Chemistry; Vol. 382, Issue 2
Resumo: An extraction-anodic adsorptive stripping voltammetric procedure using microwave-assisted solvent extraction and a gold ultramicroelectrode was developed for determining the pesticide ametryn in soil samples. The method is based on the use of acetonitrile as extraction solvent and on controlled adsorptive accumulation of the herbicide at the potential of 0.50 V (vs. Ag/AgCl) in the presence of Britton-Robinson buffer (pH 3.3). Soil sample extracts were analysed directly after drying and redissolution with the supporting electrolyte but without other pre-treatment. The limit of detection obtained for a 10 s collection time was 0.021 µg g-1. Recovery experiments for the global procedure, at the 0.500 µg g-1 level, gave satisfactory mean and standard deviation results which were comparable to those obtained by HPLC with UV detection.
Peer review: yes
URI: http://hdl.handle.net/10400.22/2995
Versão do Editor: http://link.springer.com/article/10.1007%2Fs00216-004-3045-8
Aparece nas colecções:ISEP – GRAQ – Artigos

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