摘要
将天青石试样经混合熔剂熔融,使锶转化为碳酸盐,水提取,过滤分离硫酸根离子,沉淀用盐酸溶解,加入聚乙醇,加热煮沸,稀释至一定体积。分取部分溶液于0.4mol/L硝酸介质中,加镧盐为释放剂,原子吸收光谱法(空气-乙炔火焰方式)测定氧化锶。方法适用于天青石中w(SrO)≤50%氧化锶的测定。
Celestite sample was decomposed by mixed flux and strontium in the sample was converted into strontium carbonate. The fusion disc was leached using water and the solution was filtered for separating SO^2-4. The precipitant was then dissolved with HCl. After adding polyethylene ethanol the sample solution was heated to boiling and then diluted to the volume. A portion of the solution was taken into a 0.4 mol/L HNO3 medium and lanthanum was added as releasing agent and Sr in the sample solution was determined by flame-AAS. The method is suitable for the determination of Sr in celestite samples with SrO content ≤50%.
出处
《岩矿测试》
CAS
CSCD
2008年第4期313-315,共3页
Rock and Mineral Analysis
关键词
原子吸收光谱法
天青石
锶
atomic absorption spectrometry
celestite
strontium
