摘要
在ＨＡｃ溶液中，Ａｓ（Ⅲ）存在下，Ｏｓ（Ⅷ）对ＫＢｒＯ３氧化溴甲酚绿具有强烈的催化作用，据此建立了催化光度法测定痕量Ｏｓ（Ⅷ）的新方法。方法的灵敏度为３．８６×１０－１２ｇ／ｍＬＯｓ（Ⅷ），线性范围为３－３０ｎｇ／１０ｍＬ。用于合成自然铂、自然钯矿中锇的测定，结果满意。
A new catalytic spectrophotometric method has been studied for the determination of trace osmium(Ⅷ),based on the catalytic effect of Os(Ⅷ) between the redox reaction of bromocresol green and KBrO 3 in HAc in the presence of As(Ⅲ).In the selected conditions,Beer's law is obeyed for Os(Ⅷ) in the range of 3-30ng/10mL and the sensitivity is 3.86×10 -12 g/mL.The method has been applied to the determination of trace Os(Ⅷ) in synthetic nature palladium and nature platinum with satisfactory results.
出处
《光谱实验室》
CAS
CSCD
1999年第2期201-204,共4页
Chinese Journal of Spectroscopy Laboratory
关键词
锇
溴甲酚绿
催化光度法
测定
Osmium,Bromocresol Green,Catalytic Spectrophotometry.
