PP(聚丙烯)二苯氨基脲树脂分离富集原子吸收法测定地质样品中的银  

Determination of Silver in Ore after Separation and Concentration with Polypropylene-Diphenyl Carbazide Resin by Atomic Absorption Spectrometry

作　　者：贺惠[1] 陈小明[2] 何增雄[1] 

机构地区：[1]湖南工学院,湖南衡阳421008 [2]湘潭大学化学学院,湖南湘潭411105

出　　处：《广东微量元素科学》2004年第12期49-52,共4页Trace Elements Science

基　　金：湖南省教育厅自然科学基金资助项目 (No . 0 2C5 76 )

摘　　要：研究了PP (聚丙烯 ) 二苯氨基脲树脂的合成及其分离富集样品中银的条件。于 1mol/L的HCl介质中 ,银定量吸附在PP (聚丙烯 ) 二苯氨基脲树脂上 ,用 0 5mol/L硫脲溶液洗脱 ,火焰原子吸收光谱法测定。回收率在 96 4%～ 1 0 3 2 %之间。可用于实际地质样品中贵金属的分离富集与测定。The conditions for synthesis of PP(polypropylene)-diphenyl carbazide resin and separation and preconcentration of silver in geological samples have been studied.The experiments show that silver was enriched on the PP(polypropylene)-diphenyl carbazide resin columm in 1 mol/L hydrochloric acid mediator and was eluted using 0.5 mol/L sulfourea as eluant and then determined by atomic absorption spectrometry.The recovery of silver was 96.4%～103.2%.The results obtained by analysis of some precious metals in geological ore samples are satisfactory.

关 键 词：聚丙烯 二苯氨基脲 分离富集 原子吸收光谱法 银 

分 类 号：O657.31[理学—分析化学]