分光光度法测定飞来峡水库水中的铀、钍  

Determination of U and Th by Spectrophotometric Method in Fresh-Water from Feilaixia Reservoir

作　　者：陈志东[1] 邓飞[1] 林清[1] 陈德育[1] 刘瑛[1] 陈福亮[1] 

机构地区：[1]广东省环境辐射研究监测中心,广州510300

出　　处：《辐射防护通讯》2001年第1期38-40,共3页Radiation Protection Bulletin

摘　　要：用 Fe( OH) 3共沉淀淡水样中的铀和钍 ,经硝酸溶解后 ,用 2 3 5 N-环己烷萃取铀钍 ,在盐酸介质中用分光光度法分别测定飞来峡水库水样铀、钍的含量。结果表明 ,铀、钍的回收率稳定在 80 %以上 ,方法稳定可靠 ;飞来峡水利枢纽建成后库区水体中铀、钍的含量维持在以前的水平。U and Th in fresh water from Feilaixia Reservoir were co precipitated with Fe(OH) 3, dissolved by HNO 3, extracted by 235 N cyclohexane,and determined by Spectrophotometric Method.The results showed that the recoveries of U and Th were above 80%.The method is stable and reliable.There was no change in contents of U and Th in water samples compared with the results before the project.

关 键 词：铀 钍 ^235N 分光光度法 飞来峡水库 放射性核素 环境水样分析 

分 类 号：X837[环境科学与工程—环境工程]