D314树脂分离富集环境样品中的铼  

Separation and Pre-Concentration of Rhenium from Environmental Samples by Using D314 Resin

作　　者：黄婷[1] 

机构地区：[1]安康学院化学化工系,陕西安康725000

出　　处：《安康学院学报》2012年第5期83-86,共4页Journal of Ankang University

基　　金：安康学院高层次人才科研启动项目(AYQDZR200933)

摘　　要：研究了D314树脂对铼的吸附性能,考察了吸附剂用量、吸附时间、最佳酸度和吸附容量。实验结果表明:在最佳pH条件下,铼定量、快速地被吸附在D314树脂上;室温下最大吸附容量为32.91 mgg-1。被吸附在D314树脂上的金属离子能采用10mL4%氨水定量洗脱,其回收率达到90%。本法对铼的检出限为0.65μgL-1,相对标准偏差(RSD%)为1.6%,该方法已成功应用于实际水样的测定,分析结果令人满意。The adsorption behavior of D314 resin towards rhenium （Re） was investigated. The test included the dosage of resin, effect of pH on adsorption ratio, time and adsorption capacity. Under the optimum conditions, Re （VII） ions could be adsorbed and recovered quantitatively. The maximum adsorption capacity of rhenium ions on D314 resin was 32.91 mg g- 1 at room temperature. For the elution of Re （VII）, the desorption percentage reached to 90% by 10 mL of 4% ammonia. Detection limits （3 tr） of 0.56 μ g L^-1, relative standard deviation of 1.6% level were obtained. The method has been successfully applied for determination of trace elements rhenium in some environmental samples with satisfactory results.

关 键 词：D314树脂 富集 铼 解吸 

分 类 号：O652.6[理学—分析化学]