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  

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

作　　者：张晶玉[1] 任英[1] 何海生[2] 雷中利[1] 

机构地区：[1]中国科学院长春应用化学研究所,长春130022 [2]长春冶金地质专科学校

出　　处：《应用化学》1991年第5期57-59,共3页Chinese Journal of Applied Chemistry

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。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 includingHg, 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/tto 3.59g/t. The relative errors of the determinations are less than 6%.

关 键 词：金 矿石 泡沫塑料吸附 分光光度法 

分 类 号：O614.123[理学—无机化学]