含硅酸盐水解Fe(Ⅲ)溶液的形态分析方法——Fe-Ferron与β-Silicomolybdate法相结合

SPECIATION ANALYSIS METHOD OF HYDROLYZED Fe(Ⅲ) SOLUTION CONTAINING SILICA——THE COMBINATION OF Fe-FERRON AND P-SILICOMOLYBDATE METHOD

本文对含硅酸盐水解Fe（Ⅲ）溶液的形态分析方法进行了研究,对其中pH以及Fe（Ⅲ）浓度对反应的影响作了一定的探讨,实验结果表明,在pH为5.0,控制Fe（Ⅲ）浓度在8×10^(-5)mol·l^(-1)以下较为适宜。应用Ferron法与β-Silicomolybdate法相结合,可以分别获得含硅酸盐水解Fe（Ⅲ）溶液中Fe（Ⅲ）与Silica的赋存形态及其分布。因此,可以进一步应用于各种条件下含硅酸盐水解Fe（Ⅲ）溶液中的形态分布及其转化规律的研究。

The speciation analysis method of hydrolyzed Fe (Ⅲ) solution containing silica was studied. The results showed that it was best to control the reaction on the condition of pH 5.0 and Fe (Ⅲ) concentration less than 8×10-5mol·l-1. With the combination of Fe-Ferron assay and β-Silicomolybdate method, the speciation distribution of hydrolyzed Fe(Ⅲ)and silica could be obtained respectively. And thus it could be applied to the study of new inorganic polymer flocculant-copolymerlyzed ferri-silicate.