摘要
报道了以铂(Ⅳ)催化溴酸钾氧化甲基偶氮胂对磺胺基的褪色反应,建立了一种在水相中直接测定微量铑的催化光度分析法.铂含量在5.0～40.0μg·L-1范围内符合比耳定律,检出限为5.0μg·L-1.用于铂 铑催化剂和铂 钯精矿中铂的测定,结果满意.
A new discoloring spectrophotometric method for the determination of platinum(Ⅳ) has been established based on its catalytic effect on the oxidation of 2-(4-methy)-2-arsonopheny) azo-7-(4-sulfaphenyl)azo-1,8-dinyaroxy-3,6-naphthalene dieulfonie acid medium.Beer's law is obeyed in the concentration range of 5.0～40.0μg·L^(-1).The detection limit is 5.0μg·L^(-1).The method has been applied to the determination of trace amount of Platinum(Ⅳ) in Platinum-Yhodium Catalyst and Platinum -Palladium refined ore with satisfactory results.
出处
《甘肃教育学院学报（自然科学版）》
2004年第2期41-44,共4页
Journal of Gansu Education College(Natural Science Edition)
基金
甘肃省教育厅科研基金资助项目(S997 02)
关键词
铂
溴酸钾
甲基偶氮胂对磺胺基
褪色光度法
铑
比耳定律
platinum
2-(4-methy)-2-arsonopheny) azo-7-(4-sulfaphenyl)azo-1,8-dinyaroxy-3,6-naphthalene
dieulfonie acid
discoloring spectrophotometric
