摘要
本文研究了吐温40-KOH-H2O2-Ir(Ⅳ)化学发光新体系,采用流动注射进样技术,建立了测定铱的新的化学发光分析法,检测限为1.1×10-13g/L;线性范围为每mL1.0×10-9~1.0×10-5g。经离子交换分离Au(Ⅲ)和Os(Ⅳ)离子后,测定贵金属冶金物料中微量铱,结果满意。
A new chemiluminescent mothod was established for the determination of Ir(Ⅳ) by flow injection,based on chemiluminescent system of Tween 40 KOH H 2O 2 Ir(Ⅳ).The detection limit was 1.1×10 -10 g/mL,with a linear range of 1.0×10 -9 ~1 0×10 -5 g/mL and a relative standard deviation of 3.2% for 1.0×10 -8 g/mL Ir(Ⅳ).Interferences of Au(Ⅲ) and Os(Ⅳ) ions were eliminated by ion exchange spearation.Ir(Ⅳ) in noble metal samples was determined with satisfactory results.
出处
《分析试验室》
CAS
CSCD
1997年第2期45-47,共3页
Chinese Journal of Analysis Laboratory
基金
国家自然科学基金
关键词
流动注射
化学发光分析
铱
贵金属
Flow injection
tween 40
chemiluminescence
iridium determination