中子活化分析法测定巴彦淖尔盟地区环境水中As的种态及微量元素  

DETERMINATION OF CHEMICAL SPECIES OF ARSENIC AND TRACE ELEMENTS IN ENVIRONMENTAL WATER IN THE BAYANNAOERMENG BY NAA

作　　者：杨瑞瑛[1] 朱旭萍[1] 

机构地区：[1]中国科学院高能物理所

出　　处：《核化学与放射化学》1998年第4期234-241,共8页Journal of Nuclear and Radiochemistry

摘　　要：用萃取－共沉淀法和中子活化分析法联合测定了水中总砷、Ａｓ（Ⅲ）和Ａｓ（Ⅴ）的质量浓度。验证了方法的精密度和准确度。给出了方法的最低探测限：０．０２μｇ／Ｌ。用该方法测定了巴彦淖尔盟地区环境水中Ａｓ的种态和微量元素。分析了地砷病与水中砷的质量浓度的关系。A method for determining As(Ⅲ) and As(Ⅴ) by NAA after extraction and coprecipitation has been proposed. The total inorganic arsenic targets are prepared by coprecipitation with Fe(OH) 3. The As(Ⅴ) targets are prepared by coprecipitation of the aqueous phases after extraction. The As(Ⅲ) targets are prepared by coprecipitation after extraction and back extraction. The targets are irradiated and analysed by NAA. The accuracy of the procedure is checked by analysing NBS SRM 1643b and Chinese standard reference materials (GBW),the obtained results agree quite well with literature values. The lower limit of the method is 0.02 μg/L.

关 键 词：砷 种态 中子活化分析法 地方性 砷中毒流行病 

分 类 号：O613.63[理学—无机化学] R599.9[理学—化学]