氯化钠存在下氯化亚锡-十六烷基三甲基氯化铵体系浮选分离复杂金属基体中锇

Flotation Separation of Osmium (Ⅳ) in Complex Metal Matrix with Stannous Chloride-Cetyltrimetheylammonium Bromide System in the Presence of Sodium Chloride

研究了氯化钠存在下氯化亚锡-十六烷基三甲基氯化铵体系对Os（Ⅳ）-三氯锡酸络阴离子的浮选行为。实验表明，在盐酸介质中，体系可以浮选分离Os（Ⅳ），其浮选率为95．2％。98.0％。方法加标回收率为94．0％-98．5％，精密度为2．1％-7．7％（RSD，n=5）。方法可用于从大量基体金属中分离Os（Ⅳ），对实际样品分离的分析结果与其他方法推荐值相符。

The flotation behaviors of osmium （ Ⅳ ） from stannous chloride-cetyhrimetheylammonium bromidewater system in the presence of sodium chloride were studied. The results show that under the optimized conditions osmium （ Ⅳ ） can be separated in this system. The floatation yield of osmium （ Ⅳ ） is in the rang of 95.2% - 98.0%. Recoveries of the method are 94.0% - 98.5% with precision of 2.1% - 7.7% RSD （ rt = 5 ）. The results also show that the other precious metals such as Pt （ Ⅳ ）, Pd （ Ⅱ ）, Ru （Ⅳ）, Au （ Ⅲ ）, etc. can be separated together with osmium （ Ⅳ ）. The method has been applied to the separation of osmium in practical samples and the results are in agreement with recommended values provided by other methods.