在PVA存在下Os-SnCl_2-亮绿离子缔合体系的研究高纯镍中微量Os的测定  

Spectrophotometric Determination of Osmium with OsSnCl_2-Brilliant Green in the Presence of Polyvinyl Alcohol

作　　者：吕耀忠[1] 陆兆兴 周惠文[1] 孙卫国 宁冰 

机构地区：[1]山西大学化学系,太原030006

出　　处：《分析试验室》1993年第3期48-49,21,共3页Chinese Journal of Analysis Laboratory

摘　　要：本文研究了Os-SnCl_2-PVA-亮绿离子缔合体系的显色反应,摩尔吸光系数ε_(434)为5.6×10~6L·mol^(-1)·cm^(-1),锇含量在0.1～0.7μg/25mL范围内遵守比耳定律,室温下显色后,吸光度在110min内稳定。研究了30种外来离子的影响,并进行了高纯镍中微量锇的测定。The Chromogenic reaction of Os-SnCl_2-brilliant green system in the presence of polyvinyl alcohol (PVA) was studied. The apparent molar absorptivity is 5.6× 10~6L·mol^(-1)·cm^(-1) at the maximum absorption wavelength 434nm. Beer'r law is obeyed in osmium concentration range of 0.1～0.7μg/25mL. The interferences of foreign ions were studied and osmium was determined in synthesized samples.

关 键 词：亮绿 缔合物 锇 测定 聚乙烯醇 镍 

分 类 号：O614.813[理学—无机化学]