摘要
在００８ｍｏｌ／ＬＨＣｌ介质及７０℃下，超痕量Ｒｕ（Ⅲ）催化高碘酸钾氧化罗丹明Ｂ生成一种绿色荧光产物（λｅｘ／λｅｍ＝２４８ｎｍ／５２９ｎｍ）。在选定条件下，Ｒｕ浓度在０２～１０ｎｇ／Ｌ与荧光强度成线性，该法的检出限为０１ｎｇ／ＬＲｕ，用于Ｆｅ－Ｐｔ矿中痕量Ｒｕ的测定，结果较好。
Under the conditions of 0 08 mol/L HCl medium at 70℃,Ru(Ⅲ)catalyses KIO 4 oxidation of rhodamine B to form a green fluorescemce product(λ ex /λ em =248nm/529nm).A calibration graph from 0 2 to 10ng/L Ru and detection limit of 0 1ng/L Ru were obtained by the fixed-reaction time procedure.The catalytic spectrofluorimetric method has been applied to analysis of Ru in Fe-Pt ore sample,with better results.
出处
《贵金属》
CAS
CSCD
北大核心
1999年第1期38-41,共4页
Precious Metals
