复合螯合剂-活性碳柱现场富集天然水中痕量元素  

On the Spot Enrichment of Trace Elements in Nature Water by Chelating Agents-Active Carbon Column

作　　者：王子树[1] 张伊莎[1] 吴明嘉[1] 马莺[1] 

机构地区：[1]中国科学院长春应用化学研究所,长春130022

出　　处：《分析化学》1992年第1期1-6,共6页Chinese Journal of Analytical Chemistry

摘　　要：本文提出了一种适于野外条件下的富集天然水中多个痕量元素的方法。研究了四种螫合剂在活性碳上的吸附特性及多种溶剂、酸、碱洗脱螯合剂的特性。研究了20多个元素在不同pH值下的螯合剂——活性碳的静态和动态吸附性能。采用直径10mm,长80mm柱可在现场富集天然水中不同形态的痕量元素。加入回收率为90～108％。天然水中大量的Na、K、Ca、Mg等元素不被吸附。可用多种分析方法测定。A new method for the enrichment of trace multielement in nature water has been presented. The adsorption of four kinds of chelating agent(NaDDTC, Oxin, PAN and BPHA) on active carbon and the elution power of some solvents for these chelating agents have been studied. The static and dynamic adsorption of more than 20 metal elements on these chelating agents-aetive carbon at different pH values was discussed at the same time. Using a column with 80mm×10mm I.D., different species of trace element in nature water on the spot can be enriched, and K, Na, Ca and Mg in water can be retained. The recovery of Be is in the range of 90％～108％.The elements can be determined by various detectionmethods.

关 键 词：天然水 元素富集 螯合剂 活性炭 

分 类 号：O661.1[理学—分析化学]