pM电极电位滴定法测定硅酸盐试样中的钙镁

POTENTIOMETRIC TITRATION OF CA AND MG IN SILICATE SAMPLE BY PM ELECTRODE

提出了以汞膜电极作为电位滴定法连续测定硅酸盐样品中钙和镁的指示电极,以EDTA为滴定剂,在pH≥12时滴定钙,pH=10时滴定镁,终点电位有明显的突跃,对溶液pH值的影响等方面作了详细的研究,所述条件下的滴定具有较好的选择性,方法简单、快速、准确。

A potentiometric method has been proposed for consecutive determination of Ca and Mg in a solution by pM electrode as indicate electrode. This method has brought good result in analyzing the accuracy of silicate samples.