阳极溶出伏安法测定地面水中铊  

Determination of Thallium in Surface Water by Current-Voltage with Anode-Deposition

作　　者：吴亚英 陶大钧 

机构地区：[1]无锡市环境监测中心站

出　　处：《环境监测管理与技术》1998年第4期30-32,共3页The Administration and Technique of Environmental Monitoring

摘　　要：提出了用银基汞膜电极阳极溶出伏安法测定地面水中铊的方法。对方法的精密度、回收率及干扰离子的消除进行了试验。在００１６ｍｏｌ／ＬＨＡｃ－００２ｍｏｌ／ＬＮａＡｃ缓冲溶液（ｐＨ＝４８）和０００６ｍｏｌ／ＬＥＤＴＡ为底液的溶液中，银基汞膜电极在外加电压－１００Ｖ下电解富集２ｍｉｎ～１０ｍｉｎ，再在－１００Ｖ至０００Ｖ间进行阳极溶出，成功地测定了地面水中铊的含量。铊浓度在０４μｇ／Ｌ～１８μｇ／Ｌ之间线性关系良好，γ＝０９９９９，检测限为０３μｇ／Ｌ。The paper detailed the method of determining Thallium in surface water by anode-deposition current-voltage method with silver-mercury film electrode. The precision,recovery and interference were tested. In HAc(0 016 mol/L)-NaAc(0 02 mol/L) buffer solution (pH4 8) and EDTA 0 006 mol/L solution,silver-mercury electrode was voltaged -1 00V for 2 min～10 min, then voltaged between -1 00V and 0 00 V with anode deposition to determine Thallium. With Thallium concentration between 0 4 μg/L～1 8 μg/L,the method has good lineage and γ=0 9999.The detecting limit is 0 3 μg/L.

关 键 词：铊 阳极溶出伏安法 地面水 水质监测 

分 类 号：X832.02[环境科学与工程—环境工程]