Use este identificador para citar ou linkar para este item: https://locus.ufv.br//handle/123456789/18503
Tipo: Artigo
Título: Mobility and persistence of the herbicide fomesafen in soils cultivated with bean plants using SLE/LTP and HPLC/DAD
Autor(es): Costa, Anna I. G.
Queiroz, Maria Eliana L. R.
Neves, Antônio A.
Assis, Roberta C. de
Soares, Carlos E. S. dos
Silva, Antônio A. da
D’Antonino, Leonardo
Oliveira, André F. de
Bellato, Carlos R.
Abstract: A method has been optimized and validated for the determination of fomesafen in soils using solid–liquid extraction with low-temperature partitioning (SLE/LTP) and analysis by liquid chromatography with a high-efficiency diode array detector (HPLC/DAD). The method was used to evaluate the persistence and mobility of this herbicide in different soils cultivated with bean plants. Recovery values were ≥98.9 %, with variations in the repeatability coefficients of ≤15 %, and a detection limit of 7.3 μg kg−1. Half-life values of fomesafen were between 60 and 71 days in soil cultivated using a no-till system and 99 and 114 days in soil cultivated using a conventional tillage system. The mobility of fomesafen was moderate and mainly influenced by the organic matter content, pH, and soil type. In Red-Yellow Argisol, which has a higher content of organic matter, the leaching of fomesafen was less pronounced. In Red-Yellow Latosol, which has smaller amounts of organic matter and high pH, the leaching of fomesafen was more pronounced.
Palavras-chave: Half-life
Environmental impact
Soil characteristics
Leaching
Persistence
Editor: Environmental Science and Pollution Research
Tipo de Acesso: Springer-Verlag Berlin Heidelberg
URI: https://doi.org/10.1007/s11356-014-3557-5
http://www.locus.ufv.br/handle/123456789/18503
Data do documento: 23-Set-2014
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