摘要
The possibility of ion flotation of cerium subgroup rare earths (Ce-subgroup) was explored. Various factors affecting the flotation efficiency were investigated. The results showed that, by using sodium tetradecyl sulfate as the collector of trace Ce-subgroup and frother, over 95% of Ce-subgroup at ng/g levels could be separated from pH 2.3 media in 10--15 min. The proposed method has been applied to the determination of Ce-subgroup in a polluted farmland soil reference material (GBW 08303) with satisfactory results.
The possibility of ion flotation of cerium subgroup rare earths (Ce-subgroup) was explored. Various factors affecting the flotation efficiency were investigated. The results showed that, by using sodium tetradecyl sulfate as the collector of trace Ce-subgroup and frother, over 95% of Ce-subgroup at ng/g levels could be separated from pH 2.3 media in 10--15 min. The proposed method has been applied to the determination of Ce-subgroup in a polluted farmland soil reference material (GBW 08303) with satisfactory results.
基金
Work supported by the National Natural Science Foundation of China
