硅铝钡合金中钡的快速光度法测定  

Rapid determination of barium in silicon-aluminium-barium alloy by photometry

作　　者：宋兰会[1] 莫庆军[1] 王秀艳[2] 

机构地区：[1]济南钢铁集团总公司,山东济南250101 [2]承德石油高等专科学校,河北承德067000

出　　处：《冶金分析》2004年第2期76-77,共2页Metallurgical Analysis

摘　　要：试样用硝酸、氢氟酸溶解,加高氯酸冒烟驱除氢氟酸。在硝酸介质中,钡与DBS 偶氮胂形成稳定的紫红色络合物。试验证明,该紫色络合物在钡的质量浓度小于1μg/mL时,对光的吸收符合比尔定律,据此可进行钡的快速光度测定。该方法用于硅铝钡合金中钡的测定,结果令人满意。The sample was dissolved with nitric acid and hydrofluoric acid,and after adding perchloric acid,fumes of perchloric acid were evolved by heating the solution to drive out fluorine.A stable purplish red complex of barium and DBS-arsenazo was formed in the medium of nitric acid.It was demonstrated that the absorbance of the complex was in conformity with Beer's law, when the concentration was less than 1 μg/mL for barium.Accordingly, a rapid photometric determination of barium could be carried out.The m...

关 键 词：光度法 DBS偶氮胂 硅铝钡合金 

分 类 号：TG115[金属学及工艺—物理冶金]