测定C_3A水化液相离子浓度的XRF滤纸片法

Determination of Concentration of Ca^(2+) and Al^(3+) in C_3A Hydration Solution with Filter Method by X-ray Fluorescence Spectrometry

用X射线荧光光谱滤纸片法,测定了水化时间不同的C3A水化液相中Ca和Al的离子浓度.对以分析纯硝酸铝、硝酸钙配置的人工标样进行测定的结果表明,其标准曲线线性好,可基本消除基体效应.该方法样品用量少,制样简单,分析速度快,是测定液体样品的一种较好方法.

The Ca2+, Al3+ concentration in C3A hydration solution was determined with filter method by Xray fluorescence spectrometry. Aluminium nitrate and calcium nitrate were used as synthetical standard and the linearity of standard curve was excellent. The method can also eliminate the matrix effects. It has other advantages such as less volume of specimen, easy specimen's preparation and short analysis time. It's a good method for liquid samples.