电导率法测定水中含盐量

Determination of TDS in Water by Conductivity

电导率法测定水中总盐含量,根据是水溶液中绝大多数盐分以正负离子的形式存在,其浓度大小可由电导率体现出来。方法是根据电导率与含盐量呈线性关系,建立标准工作曲线进行定量分析。利用此法测定水中含盐量,快速简便,准确率高。

The total dissolved solids( TDS) in water can be determinated by conductivity. Because the vast majority of salt is decomposed into positive and negative ions in water,while the ions concentration can be reflected by the electrical conductivity. There is a linear relationship between the conductivity and TDS, therefore,a standard curve can be established for quantitative analysis. The proposed method which has a high accuracy is simple and rapid.