二号熔剂（钡熔剂）样品的分析方法

The Analytical Approach of the Second Flux Sample (Barium Flux)

二号熔剂由光卤石和氯化镁加入少量的氯化钡灼烧而成，水溶后其中的Ｂａ（２＋）严重干扰Ｃａ（２＋）和Ｍｇ（２＋）的测定，因此Ｂａ（２＋）必须分离。在样品中加入２ｍｏｌ／Ｌ的硫酸使Ｂａ（２＋）生成ＢａＳＯ４沉淀，经过滤分离便可快捷、准确地测定Ｃａ（２＋）、Ｍｇ（２＋）等各项成分。

The incandesce mixture of carnallite and magnesium chloride,and a little volum of barium chloride consitutes the second flux. As it dissolved by water, Ba(2+) seriously disturbed the measurment of Ca(2+) and Mg(2+). So it is necessary to separat Ba2+ from the solution before measuring Sulfuric acid (2mol/L) is added in the sample to change Ba2+ into BaSO4 precipitation . After separating Ba(2+) from solution by filtering,the separated solution is used to measure ion concentrations such as Ca(2+) Mg(2+) quickly and accurately.