原子吸收法测定原镁石中痕量镉的研究  

Study of Determination of Trace Cadmium in Magnesite by Graphite Furnace Atomic Absorption Spectrometry

作　　者：胡晓静 欧阳昌俊 李洪仁[2] 

机构地区：[1]辽宁进出口商品检验局矿产中心 [2]沈阳大学师范学院化学系

出　　处：《光谱实验室》1999年第1期88-90,共3页Chinese Journal of Spectroscopy Laboratory

摘　　要：本文采用钴和样品自身消化反应产物硝酸镁作为混合基体改进剂，塞曼石墨炉原子吸收法测定原镁石中痕量镉，确定了仪器工作参数和测定条件，测定的相对标准偏差（ｎ＝９）小于１０％，用标准加入法测定镉的回收率为８８％－１０４％。This is a method for determining cadmium in magnesite by using zeeman graphite furnace atomic absorption spectrometry. Cobalt and magnesium nitrate that the major component of the sample were used as a mixed matrix modifier to eliminate the interference. The detection limit are 0.03ng/mL. The relative standard deviation was 8.3%. Recoveries of standard additions were satisfactry.

关 键 词：石墨炉 原子吸收法 镉 原镁石 测定 

分 类 号：TF822.013[冶金工程—有色金属冶金]