摘要
基于丙酮在吐温４０一氢氧化钾一过氧化氢一O_ｓ（Ⅳ）体系中增强Ｏ_ｓ（Ⅳ）的化学发光，采用流动注射进样技术，建立了测定痕量锇（Ⅳ）的新的化学发光分析法．方法的线性范围为１．０Ｘ１~－８～１．０Ｘ１０~－６Ｏ（Ⅳ）／ｍＬ检出限为２．０Ｘ１０~－９ｇ／ｍ，对１０Ｘ１０~－７ｇ／ｍＬＯｓ（Ⅳ）标准溶液测定１１次的相对标准偏差为３．０％．拟定方法用于贵金属精矿中痕量锇的测定，结果满意。本文还进行了增敏机理的探讨．
A new chemiluminescent analysis for the determination of trace amount Os (VI) by flow--injection was proposed in this paper, based on acetone enhancing chemiluminescence of Os(VI) in Tween 40 - KOH -H_2O_2 - Os (VI ) chemiluminescent system. The detection limit is 2.0x10^-9g/mL, the linear range is 1.0x10^-8 1.0x 10^-6g/mL for Os(VI)and the relative standard deviation is 3.0% for 11 measurements of 1.0x 10^-7g/mL for Os(VI). The proposed method has been applied to the determination of Os(VI) in precious metal ores with satisfatory results. The mechanism of acetone enhancing was also investigated.
出处
《冶金分析》
CAS
CSCD
北大核心
1999年第2期1-3,共3页
Metallurgical Analysis
