【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．更多还原

【Abstract】 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 -H₂O₂ - 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.更多还原