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首页> 美国卫生研究院文献>Molecules >Approach to the Dynamic of Carbamazepine and its Main Metabolites in Soil Contamination through the Reuse of Wastewater and Sewage Sludge
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Approach to the Dynamic of Carbamazepine and its Main Metabolites in Soil Contamination through the Reuse of Wastewater and Sewage Sludge

机译：通过废水和污水污泥的土壤污染动力学探讨了土壤污染的动态曲线

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摘要

The release of pharmaceutically active compounds to the soils through the application of sewage sludge and the irrigation with wastewater, or even with surface water, is constant. The adsorption of these compounds onto the soil is one of the key factors affecting their fate in the environment and their potential environmental risks. In this work, the adsorption of carbamazepine (CBZ) and its metabolites, 3-hydroxy-carbamazepine (3OH-CBZ), carbamazepine-10,11-dihydro-10,11-epoxide (EP-CBZ), and 10,11-dihydro-10-hydroxycarbamazepine (10OH-CBZ), in three Mediterranean soils was evaluated using single-solute and four-solute experiments. The highest adsorptions were measured for 3OH-CBZ, followed by CBZ, EP-CBZ, and 10OH-CBZ, in that order. A high influence of the physicochemical characteristics of the compounds, pH, and soil characteristics in the adsorption of the studied compounds was observed and corroborated by the statistical analysis of the results. Moreover, a good fit was observed in the three isotherm models evaluated (linear, Freundlich, and Langmuir) in single-solute experiments (R2 > 0.90). However, a decrease of the measured adsorptions and a worse fit to the isotherm models were observed in the case of multiple-solute experiments. This could be mainly due to the competition established between the studied compounds for the active sites of the soils.
机译：通过应用污水污泥和用废水的灌溉，甚至用地表水释放药物活性化合物对土壤的释放是恒定的。这些化合物在土壤上的吸附是影响环境中的命运的关键因素之一及其潜在的环境风险。在这项工作中，对胭脂醛（CBZ）及其代谢物，3-羟基 - 卡吡啶（3OH-CBZ），卡巴马嗪-10,11-二氢-10,11-环氧化（EP-CBZ）的吸附和10,11-使用单溶质和四溶质实验评估三种地中海土壤中二氢-10-羟基氨基吡嗪（10OH-CBZ）。测量最高的吸附量为3OH-CBZ，然后以CBZ，EP-CBZ和10OH-CBZ为单位测量。观察到在研究的化合物吸附中化合物，pH和土壤特性的物理化学特性的高影响力通过统计分析来衡量结果。此外，在单溶质实验中（R2> 0.90）中评估的三个等温模型（Linear，Freundlich和Langmuir）评估的三等温模型中观察到良好的配合。然而，在多溶质实验的情况下，观察到测量的吸附和更差的适合于等温模型的减少。这可能主要是由于竞争于研究了土壤的活性位点的研究。

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