Enrichment of trace cerium subgroup rare earths by means of ion flotation

The possibility of ion flotation of cerium subgroup rare earths (Ce-subgroup) wasexplored. Various factors affecting the flotation efficiency were investigated. The results showedthat, 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 proposedmethod has been applied to the determination of Ce-subgroup in a polluted farmland soil referencematerial (GBW 08303) with satisfactory results.

Enrichment of trace cerium subgroup rare earths by means of ion flotation

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.