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首页> 外文期刊>The journal of physical chemistry, C. Nanomaterials and interfaces >Quantitative Prediction of Atrazine Sorption in a Manitoba Soil Using Conventional Chemical Kinetics Instead of Empirical Parameters
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Quantitative Prediction of Atrazine Sorption in a Manitoba Soil Using Conventional Chemical Kinetics Instead of Empirical Parameters

机译：使用常规化学动力学代替经验参数对马尼托巴土壤中阿特拉津的吸附量进行定量预测

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摘要

How to predict the persistence and leaching of organic chemicals in soils is a long-standing environmental issue. The injection of soil slurries into an HPLC together with separate solution-phase analysis permits the resolution of total sorption into intraparticle-diffused and labile-sorbed fractions. Sorption site stoichiometry was revealed, and two-step sorption was confirmed. This permitted conventional chemical kinetics including Laidler's integral rate law for second-order kinetics to be adapted to the natural mixture of irregular sorption sites. Quantitative predictions were successfully tested, and the effects of site saturation on the kinetics were demonstrated. Other authors have independently published evidence related to sorption site stoichiometry, by using scanning tunnelling and fluorescence microscopy for sorption onto idealized crystals. This presents opportunities for research advances in two directions. HPLC and microscopy methods could be used together for sorption mechanisms in both environmental and pure crystal systems.
机译：如何预测土壤中有机化学物质的残留和浸出是一个长期存在的环境问题。将土壤浆液注入HPLC并进行单独的溶液相分析，可以将总吸附解析为颗粒内扩散组分和不稳定吸附组分。揭示了吸附部位的化学计量，并确认了两步吸附。这使得包括二阶动力学的莱德勒积分速率定律在内的常规化学动力学能够适应不规则吸附位点的天然混合物。成功地测试了定量预测，并证明了位饱和对动力学的影响。其他作者通过使用扫描隧道和荧光显微镜将其吸附到理想的晶体上，独立发表了与吸附位化学计量有关的证据。这为两个方面的研究进展提供了机会。 HPLC和显微镜方法可一起用于环境和纯晶体系统中的吸附机理。

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