摘要
本文研究了硫酸盐沉淀差减重量法测锶时Sr、Ba与Ca、Mg分离的最佳条件。拟定了在pH10的氨性溶液中用EDTA络合滴定Sr、Ba、Ca、Mg后再在pH 4.5的25％乙醇溶液中以(NH_4)_2SO_4沉淀Sr、Ba的分析流程。方法简单易于掌握,成本低,用于样品分析结果准确。
The determination of Sr in strontium mineial by sulfate precipitation gravimetry (by difference of Sr and Ba) was studied. An aliquot of the sample solution is first titrated with EDTA to complex Ca, Mg, Sr and Ba at pH 10, then (NH4)2SO4 is added to precipitate Sr and Ba as sulfates in 25% alcohol at pH 4.5. The method is rapid and easy and gives accurate results.
出处
《岩矿测试》
CAS
CSCD
北大核心
1990年第1期67-69,共3页
Rock and Mineral Analysis
