中华医学超声杂志

应用化学 ›› 1991, Vol. 0 ›› Issue (5): 57-59.

• 研究简报 • 上一篇    下一篇

分光光度法测定矿石中痕量金的分离富集方法研究 Ⅱ.泡沫塑料动态吸附

张晶玉, 任英, 何海生, 雷中利   

  1. 中国科学院长春应用化学研究所, 长春 130022
  • 收稿日期:1990-08-21 修回日期:1990-11-10 出版日期:1991-10-10 发布日期:1991-10-10

SEPARATION AND PRECONCENTRATION OF TRACE GOLD IN MINERALS WITH POLYURETHANE FOAM FOR SPECTROPHOTOMETRIC ANALYSISⅡ.DYNAMIC ADSORPTION AND DEADSORPTION OF GOLD

Zhang Jingyu, Ren Ying, He Haisheng, Lei Zhongli   

  1. Changchun Institute of Applied Chemistry, Academia Sinica, Changchun 130022
  • Received:1990-08-21 Revised:1990-11-10 Published:1991-10-10 Online:1991-10-10

PDF

416

被引次数

11 | 3

摘要： 金矿石的类型复杂且金含量低,因此分离富集金的方法便是分析矿石中金的方法关键,我们在I报[1]中研究了泡沫塑料(以下简称泡塑)静态分离富集金,并提出了以丙酮为解脱剂。丙酮不仅在常温下可有效地将金解脱,而且可直接用硫代米蚩酮显色分光光度法测定金,从而大大简化了分析手续。本文研究用泡塑柱动态分离富集金的方法,使金的分离和富集效果进一步得到改善,操作更为简捷,并有利于将分离富集过程仪器化和自动化。

关键词: 金, 分离富集, 聚氨酯泡沫塑料, 分光光度法

Abstract: The present paper deals with the dynamic separation and preeoneentration of traeegold in minerals with polyurethane foam.Aeetone was used as eluant for releasingthe gold adsorbed on the polyurethane foam.among the 25 eoexisting ions including Hg, Ag, Tl and Pd, only Tl shows a relatively low allowance amount.The interferencefrom Tl can be easily eliminated by washing the column with EDTA solution.The recoveryof gold is about 95%.The procedure has been applied to the separation and determinationof gold in several geological standard samples with gold contents range from 0.051g/t to 3.59g/t.The relative errors of the determinations are less than 6%.

Key words: gold, separation, polyurethane foam, spectrophotometry

网站版权 © 应用化学     本网站备案：吉ICP备12000082号