工业废水蒸发残渣主要成分的测定

Determination of the Main Components in Industrial Wastewater Evaporation Residue

样品通过烧结处理后,采用重量法测定样品中SiO2和SO24-的含量,采用配位滴定法测定CaO、MgO和Fe2O3的含量。实验结果表明用瓷坩埚代替铂坩埚处理样品可行,SO24-的加标回收率在98.04%～100.0%之间,测定结果令人满意。

The content of SiO2 and SO2-4 in industrial wastewater evaporation residue was determined by gravimetry.CaO,MgO and Fe2O3 were determined by coordination titration.The results showed that the method was feasible by porcelain crucible instead of platinum crucible,the recoveries were 98.04%~100.0%,and the results were satisfactory.