摘要
应用液膜技术分离、富集水和工业废水中微量稀土总量(∑RE)。研究了流动载体(P215)、表面活性剂(N113A)、膜的增强剂(液体石腊)、膜溶剂(煤油)和内相解吸剂(HCl)等,对分离富集微量稀土的影响。确立了N113A—P215—液体石腊—煤油—HCl液膜体系的最佳组成和最适宜的实验条件。富集后的溶液,用5-Br-PADAP分光光度法测定∑RE。对微量稀土的富集倍数为75以上,回收率在99％以上。对水、工业废水样品测定的相对标准偏差为1.8％～6.2％。
Using an emulsion liquid membrane for separating and enriching total trace rare earth in water and industrial wastewater, and the effects of factors such as: mobile carriers (P215), surfactants (M113A), strengthen reagent (liquid paraffin), solvent (kerosene) and desorbing reagent (HC1 2.0mol/L) etc. on separating and enriching trace rare earth have been studied. The optimum constituent of the liquid membrane (N113A-P215-liquid paraffin-kerosene-HCl) and the optimal experimental conditions of enrichment were determined. Enriched solution was then determined by using 5-Br-PADAP spectrophotometry. The recovery rate of trace rare earth would be more than 99% if enrichment are over 75-fold. The relative standard deviation for determining water and industrial waste-water was 1.8%-6.2%.
出处
《上海环境科学》
CAS
CSCD
1995年第12期27-29,共3页
Shanghai Environmental Sciences
关键词
水质分析
富集
稀土总量
分光光度法
液膜
分离
Water qualify analysis Concentration Total trace rare earth Ion exchange membrane Spectrophotometry
