蒙脱石层间域的性质及其环境意义

CHARACTER OF MONTMORILLONITE INTERLAYER AND ITS ENVIRONMENTAL SIGNIFICANCE

蒙脱石矿物是土壤中比表面积大、分布很广的一种粘土矿物 ,也是土壤中主要的活性组分之一。蒙脱石层间域是一个特殊的化学反应场所。系统地评述了无机、有机阳离子、农药分子在蒙脱石层间域中的吸附、脱附、氧化还原、催化降解等反应机理 ,并指出它们的环境化学行为对环境的影响和意义。

Montmorillonite is a large surface area and wide distribution clay mineral, it is also one of main activated components in soil. The montmorillonite interlayer is a special site in chemical reaction. In this paper we review the reaction mechanisms of inorganic cations, organic cations and herbicide molecules adsorbed, de adsorbed, oxidized reduced and catalyzed degraded on montmorillonite interlayer. We also discuss the effect and significance to environment of their environmental chemistry behaviors. Montmorillonite can adsorb the poisonous heavy metal element and organic pollutants, and the interlayer is a good detained site for those environmental pollutants. So the research on the interlayer of montmorillonite can understand the reason that environmental pollutants migrate, precipitate, and degrade in environment. And it will provide the theoretic foundation to control environmental pollution better.