环境水体中聚合铝形态的分析测试技术研究进展

酸性环境中，沉积物释放和土壤淋失的可溶态铝大量进入环境水体，并在水体中以及水和颗粒物界面上发生聚合、絮凝、沉降以及络舍、吸附和电中和等物理化学反应，严重影响着其它元素的生物地球化学循环和其它污染物的迁移和归趋，具有重要的生态和生物效应。而Al^3 及其羟基水解聚合物的形态分析是研究环境和生物体系中铝的毒性、生物有效性和传输机理以及天然水体的自净机理的关键。由于直接有效测定上的困难，对天然水体中是否存在铝水解聚合型体这一观点并未达成共识，其结论也存在一些争议甚至相悖的情况。本文综述了近二十年来环境水体中聚合铝形态测试技术研究的新进展。引用文献60篇。

Advance in the Analytical Monitoring Techniques for Polynuclear Aluminum in Environmental Water Systems

A review with 60 references was presented on the research progress of the analytical monitoring techniques for polynuclear aluminum occurring in environmental water systems. The speciation of hexaaquaaluminum and its hydrolytic hydroxyl polymers is essential for understanding the toxicity, bioavailability and transport mechanisms for elements in environmental and biological systems. Many methods for fractionating of polynuclear aluminum have been developed during the last two decades. But there is no consensus about whether there is any polynuclear aluminum in environmental water systems. Many of the seemingly inconsistent and even paradoxical reports all derive from the utilization of different experimental methods, conditions, and approaches. In this paper, the effects of some important parameters, such as the sort of clay minerals, the OH~(-)/Al molar ratios, and coexistence ions, as well as the temperature were also reported.