中文摘要：

应用ExpAssoc分布模拟计算方法对Al-Ferron逐时络合动力学曲线进行了定量模拟，采用固体直接投加法对固体聚合氯化铝中铝形态分布进行了测定。通过比较传统Al-Ferron逐时络合比色法和ExpAssoc分布模拟计算法二者的测定结果，表明ExpAssoc分布模拟计算方法测定值准确可靠、重现性好。

英文摘要：

Al-Ferron timed assay is a basic method in the study of polynuclear hydroxyl aluminum species. The hydrolysis-polymeriza- tion species of the aluminum salt is very complex and the species change quickly in dissolution and dilution proems, which make determination of aluminum species distribution difficult and the experimental results non-repetitional. In this paper, the species in solid polynuclear aluminum is determined by applying the ExpAssoc distribution to quantitatively fit the Al-Ferron reaction dynamics curver and adopting the method of adding solid directly. Comparing the results between traditional method and ExpAssoc distribution fitting method, the result of ExpAssoc distribution fitting method is accuracy and good repetition.