Development of methodology simple, fast and without the clean-up step for determination of glyphosate in environmental samples of water and soil by HPLC / UV-VIS / Desenvolvimento de metodologia simples, rápida e sem etapa de clean-up para determinação de glifosfato em amostras ambientais de água e solo por HPLC/UV-VIS

AUTOR(ES)
DATA DE PUBLICAÇÃO

2009

RESUMO

Glyphosate, N-(phosphonometil)glycine, is a systemic herbicide and post-emergent with great efficiency in the removal of weeds, featuring low cost, which is reflected on its wide application. Due to this fact, special care in order to not contaminate the environment has to be attend, since there is evidence of deleterious effects on the environment after its prolonged use including risks to human health. Therefore, the aim of this study was to develop an adequate methodology for the determination of glyphosate in samples of water and soil using the technique of high performance liquid chromatography (HPLC). The proposed method describes an efficient alternative for the determination of glyphosate in water samples by eliminating the steps of extraction and clean-up. The limits of detection and quantification related to the method were 9.93 and 30.1 µg L-1. Samples of soil results in recovery of glyphosate ranged from 78.1 to 113.2% due to the percentage fraction of organic, inorganic, among other factors. Moreover, the proposed method proved to be selective, with good linearity, accuracy, repeatability and robustness.

ASSUNTO(S)

solo water hplc determinação direta de glifosfato soil hplc direct determination of glyphosate água

ACESSO AO ARTIGO

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