塞曼效应石墨炉原子吸收法测定铬镍钢中痕量砷和硒  

Determination of trace arsenic and selenium in chromium-nickel alloy steel by graphite furnace atomic absorption spectrophotometry

作　　者：王丽晖[1] 严永茂[1] 赵改丽[1] 李贵才[1] 

机构地区：[1]中国兵器科学研究院宁波分院,山东烟台264003

出　　处：《兵器材料科学与工程》2007年第4期67-69,共3页Ordnance Material Science and Engineering

摘　　要：采用日立公司Z-2000原子吸收光谱仪对铬镍钢中痕量砷和硒进行测定并讨论相关的实验条件。以质量浓度为0.1mg·mL-1的Mg(NO3)2作基体改进剂,提高砷和硒的灰化温度,检测信号得到扩大。回收率为104%和106%。方法的相对标准偏差为3.29%和3.76%,特征质量为0.73!g·L-1和0.75!g·L-1。检出线为1.40!g·L-1和1.13!g·L-1。该方法简便、快速、稳定、准确度高。Trace arsenic and selenium in chromium-nickel alloy steel was determined by HITACHI Z-2000 atomic absorption spectrophotometer and relative experiment conditions were discussed. Results showed that the content of arsenic and selenium was determined by using 0.1 mg.ml^-1 Mg （NO3）2 as matrix modifier,the recovery rate was in range of 104% and 106% ,the relative standard deviation of the method was 3.29% and 3.76%, characteristic quality was 0.73 μg· L^-1 and 0.75 μg· L^-1, and limit of detection was 1.40 μg· L^-1 and 1.13 μg· L^-1. The method was suitable for the determination of trace arsenic and selenium in chromium-nickel alloy steel with the advantages of being simple ,rapid ,stable and accurate.

关 键 词：石墨炉原子吸收法 基体改进剂 痕量砷和硒 灰化 原子化 

分 类 号：TG115.335[金属学及工艺—物理冶金]