CdI_4^(2-)·Fe(phen)_3^(2+)离子对1,2-二氯乙烷萃取光度法测定水中痕量镉的研究  

Study on Extractive Spectrophotometry for the Determination of Trace Cadmium in Water by IonPair of CdI2-4 and Fe(phen)2+3 with 1,2Dichloroethane

作　　者：秦永惠[1] 张永启[1] 姜晓霞 

机构地区：[1]河北大学化学系

出　　处：《环境科学》1998年第4期82-84,共3页Environmental Science

摘　　要：研究萃取光度法测定痕量Ｃｄ的最佳实验条件，结果表明，λｍａｘ＝５１２ｎｍ，ε＝２．４２×１０６Ｌｍｏｌ－１ｃｍ－１，相对标准偏差为２．６％（自来水）和３．１％（河水）．水样中Ｃｄ的含量在０—１μｇ／２５ｍｌ范围内服从比尔定律．应用于自来水及河水中Ｃｄ的测定，结果令人满意．Experimental results showed that λmax=512nm,ε=242×106L·mol-1·cm-1;the relative standard deviation is 2.6% and 31% for tap water and river water;Beer's law is obyed in the range of 0—1μg/25ml for cadmium in water and cadmium in tap water and river water was determined with satisfactory results.

关 键 词：离子对 二氯乙烷 萃取光度法 镉 水质监测 

分 类 号：X832.02[环境科学与工程—环境工程]