偶氮胂Ⅲ光度法测定锶硅铁中锶  

Spectrophotometric Determination of Strontium in an Alloy Composed of Strontium,Silicon and Iron

作　　者：林雨萍[1] 

机构地区：[1]南京大学地球科学系,南京210093

出　　处：《冶金分析》1997年第5期13-15,共3页Metallurgical Analysis

摘　　要：加乙酸钠于试样制备的溶液中,加热水解,基体元素生成碱式盐沉淀与锶钙镁分离,以 DCTA 掩蔽钙镁,锶与偶氮胂Ⅲ显色.测定结果满意.The matrix elements were separated from strontium,calcium and magnesium by adding sodium acetate to the sam- ple solution and hydrolysis under heating.A complex of strontium was formed with arsenazo Ⅲ and the color intensity of this complex was measured spectrophotometrically.DCTA is added as masking agent to eliminate the interference from other met- als.The results obtained were good in agreement with the other methods.

关 键 词：锶 偶氮胂Ⅲ 分光光度法 锶硅铁 孕育剂 显色剂 

分 类 号：TF513[冶金工程—钢铁冶金]