Coeficiente de distribuição do inseticida tiametoxam na fração mineral de solos sob efeito de ácidos orgânicos mono, di e tricarboxílicos

Coeficiente de distribuição do inseticida tiametoxam na fração mineral de solos sob efeito de ácidos orgânicos mono, di e tricarboxílicos

The aim of this study was to investigate the sorption and desorption of thiamethoxam in contrasting soils under the effect of organic acids. The results showed that MTo sorption had higher Kd. The presence of organic acids increased sorption and reduced desorption of thiamethoxam at MTo. The opposit...

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Bibliographic Details
Main Authors: Samara Andrade Carvalho, José Maria de Lima, Niton Curi, Carlos Alberto Silva, João Paulo Vaz Floriano Toledo, Flávia Villela Soares
Format: Article
Language:English
Published: Sociedade Brasileira de Química 2013-01-01
Series:Química Nova
Subjects:
pesticide
distribution coefficient
environmental contamination
Online Access:http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422013000900008&lng=en&tlng=en
Description
Summary:The aim of this study was to investigate the sorption and desorption of thiamethoxam in contrasting soils under the effect of organic acids. The results showed that MTo sorption had higher Kd. The presence of organic acids increased sorption and reduced desorption of thiamethoxam at MTo. The opposite was observed for the LVdf where the presence of 400 µmol L-1 of acid reduced the sorption of thiamethoxam in a concentration of 20 µmol L-1, not influencing desorption. The dynamics of organic acids with minerals from the soil particles were clarified by infrared analysis.
ISSN:1678-7064

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