摘要
A column chromatographic method has been developed for the separation and determination of cerium(Ⅲ) using poly[dibenzo-18-crown-6].The separation was carried out in L-valine medium.The adsorption of cerium(Ⅲ) was quantitative from 1×10-1 to 1×10-4 mol/L L-valine.Amongst the various eluents,1.0-8.0 mol/L hydrochloric acid,1.0-8.0 mol/L hydrobromic acid,1.0-8.0 mol/L perchloric acid,1.0-2.0 mol/L sulfuric acid and 4.0-5.0 mol/L acetic acid,were found to be the efficient eluents for cerium(Ⅲ).The capacity of poly[dibenzo-18-crown-6] for cerium(Ⅲ) was(0.428±0.01) mmol/g.The method was applied to the separation of cerium(Ⅲ) from associated elements link uranium(Ⅵ) and thorium(Ⅳ).It was also applied for the determination of cerium(Ⅲ) in geological samples.The method is simple,rapid and selective with good reproducibility(approximately±2%).
A column chromatographic method has been developed for the separation and determination of cerium（Ⅲ） using poly[dibenzo-18-crown-6].The separation was carried out in L-valine medium.The adsorption of cerium（Ⅲ） was quantitative from 1×10-1 to 1×10-4 mol/L L-valine.Amongst the various eluents,1.0-8.0 mol/L hydrochloric acid,1.0-8.0 mol/L hydrobromic acid,1.0-8.0 mol/L perchloric acid,1.0-2.0 mol/L sulfuric acid and 4.0-5.0 mol/L acetic acid,were found to be the efficient eluents for cerium（Ⅲ）.The capacity of poly[dibenzo-18-crown-6] for cerium（Ⅲ） was（0.428±0.01） mmol/g.The method was applied to the separation of cerium（Ⅲ） from associated elements link uranium（Ⅵ） and thorium（Ⅳ）.It was also applied for the determination of cerium（Ⅲ） in geological samples.The method is simple,rapid and selective with good reproducibility（approximately±2%）.
出处
《色谱》
CAS
CSCD
北大核心
2009年第2期224-228,共5页
Chinese Journal of Chromatography
基金
This work was supported by the University Grant Commission for awarding Junior Research Fellowship.
关键词
L-缬氨酸介质
聚二苯
冠醚
铈
column chromatography
poly[dibenzo-18-crown-6]
cerium（Ⅲ）
uranium（Ⅵ）
thorium（Ⅳ）
L-valine
