A general mechanism of interaction of carbonates with non-polar S-containing pesticides

Stathi, Panagiota; Christoforidis, Konstantinos C.; Deligiannakis, Yiannis

doi:10.1016/j.geoderma.2010.10.022

Cited by 2 publications

(3 citation statements)

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“…However, the most important processes are adsorption and desorption of the pesticide in the soil because the other processes mentioned previously are influenced by pesticide adsorption and desorption (De Jonge et al 1996). Pesticides could be adsorbed by different soil components such as organic matter (Farahani et al 2008), clays (Sharma and Awasthi 1997), carbonates and oxy-hydroxides (Stathi et al 2011) and even rock fragments (Vischetti et al 2010). Also adsorption and desorption processes could be influenced by other soil characteristics such as pH (Stathi et al 2011) and temperature (Li et al 2011).…”

Section: Introductionmentioning

confidence: 99%

“…Pesticides could be adsorbed by different soil components such as organic matter (Farahani et al 2008), clays (Sharma and Awasthi 1997), carbonates and oxy-hydroxides (Stathi et al 2011) and even rock fragments (Vischetti et al 2010). Also adsorption and desorption processes could be influenced by other soil characteristics such as pH (Stathi et al 2011) and temperature (Li et al 2011). The adsorption and desorption of pesticides could have different effects on pesticide persistence in the soil.…”

Section: Introductionmentioning

confidence: 99%

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Metalaxyl mobility in acid soils: evaluation using different methods

Fernández‐Calviño

Bermúdez-Couso

Nóvoa-Muñoz

et al. 2014

Int. J. Environ. Sci. Technol.

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In the present work, different methods were tested to evaluate the adsorption and desorption of metalaxyl in two acid soils with different organic carbon and clay contents. The three methods (batch, stirred flow chamber and column) that were examined produced similar findings when the two soils were compared: (a) the metalaxyl adsorption capacity was higher in the soil with higher organic matter and clay content, and (b) the soil with the lower organic matter and clay contents provided higher adsorption rate constants. In the two soils tested, the metalaxyl adsorbed in the soil was highly reversible. When only one soil was considered, the different methods yielded different results. The metalaxyl adsorption and its rate were higher with the stirred flow chamber than in the column experiments, and in the column experiments, the total metalaxyl adsorption and the rate of adsorption were higher than in the batch experiments. The percentages of metalaxyl desorbed from the soil were similar in the stirred flow chamber and column experiments, but in the batch experiments, the percentages were significantly lower. In the stirred flow chamber experiments, the desorption processes were faster than the adsorption processes, while in the column experiments, the adsorption and desorption processes exhibited similar rates.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Metalaxyl mobility in acid soils: evaluation using different methods

Fernández‐Calviño

Bermúdez-Couso

Nóvoa-Muñoz

et al. 2014

Int. J. Environ. Sci. Technol.

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show abstract

“…The paper "A General Mechanism of Interaction of Carbonates with nonPolar S-containing Pesticides" (Stathi et al, 2011) is another example of application of the DFT method in the explanation of the formation of complexes of non-polar S-containing pesticides (Methyl/Ethyl-Parathion, Fenthion, Methidathion, and Thiram) with carbonates in solution and their adsorption on chargeable oxides. The DFT method in a combination with surface complexation modeling (SCM) described a mechanism of the formed complexes and showed its pH dependence.…”

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confidence: 99%