活性炭分离富集水体中痕量镉  

THE PRECONCENTRATION OF THE TRACE CADMIUM IN WATER BY ACTIVATED CARBON

作　　者：朱霞萍[1] 汪模辉[1] 李锡坤[2] 周莉[1] 陆斌[1] 

机构地区：[1]成都理工大学材料与化学与化工学院,四川成都610059 [2]广东省物料实验检测中心,广东广州510080

出　　处：《离子交换与吸附》2008年第2期112-117,共6页Ion Exchange and Adsorption

基　　金：高等学校博士学科点专项科研基金(20050616009);企业横向委托(2005G-84);校研究基金(2006YG05)

摘　　要：建立了以PAN为吸附辅助剂,以活性碳为吸附剂,结合火焰原子吸收法测定地表水中痕量镉的方法。研制了以微量过滤器和医用注射器组成的分离富集装置;探讨了镉吸附解吸的最佳试验条件,并应用于实际环境水样中痕量镉的测定,回收率为98.25%～105.0%。该方法简化了分离富集程序,操作简单,迅速,能同时进行6～8个样品的分析测定,具备一定实用性。A new cadmium pre-concentration and determination method based on the adsorption on activated carbon of the complex of Cd with PAN has been established prior to atomic absorption spectroscopy. A pre-concentration apparatus with a micro-filter and a medical injector has been built, and the optimum conditions of adsorption and washing of cadmium have been discussed, it is applied to the measuring of the real water sample, the rate of recovery is 98.25%-105.0%. This method has simplified the procedure of pre-concentration, it has the advantages of simple, rapid, practical, and it can deal with 6-8 samples simultaneously.

关 键 词：活性炭 分离富集 原子吸收 镉 地表水 

分 类 号：TQ424[化学工程]