FIA离子交换预浓集AAS法测定水中微量元素  

QUANTIATIVE DETERMINATION OF TRACE ELEMENTES IN WATER BY ON-LINE FIA ION-EXCHANGE PRECONCENTRATION AAS

作　　者：孔璋[1] 徐效勉 董立平 王艳[3] 

机构地区：[1]沈阳药学院卫生化学教研室 [2]沈阳市防疫站 [3]辽宁省肿瘤医院

出　　处：《沈阳药学院学报》1992年第3期164-167,184,共5页

摘　　要：本文用流动注射离子交换预浓集与原子吸收光谱在线连接测定了水中痕量Pb,Cd,Mn,Cu,Ni和Zn.灵敏度比以往火焰法提高40～60倍,分析速度为30样/h.并用均匀设计法优选了实验条件。样品回收率为98～103%,相对标准偏差低于1.8%,最小检测浓度分别为2.0μg/L;0.2μg/L;1.0μg/L;2.0μg/L;5.0μg/L;2.0μg/L.The Flow injection technique was applied to an efficient on-line exchange pieconcentration system for the AAS determination of Pb, Cd, Mn, Cu, Ni, Zn in water. A40～60 fold increase in sensitivity for Pb, Cd, Mn, Cu, Ni, Zn was attained at a sampling frequency of 30 s/h. The relative standard deviations were generally less than 1.8%. The recoveries for water sample were 98.0～103.3%. The detection limits were 2.0μg/L; 0.2μg/L; 1.0μg/L; 2.0μg/L; 5.0μg/L and 2.0μg/L. The experimental conditions were results of choice through a uniform design. And additionally a brief discussion is also presented in this paper.

关 键 词：流动注射分析 水 微量元素 AAS 

分 类 号：R123.1[医药卫生—环境卫生学]