摘要
研究了缝管原子捕集原子吸收光谱法测量Ｐｂ、Ｃｕ和Ｃｄ的最佳条件。结果表明，在选定的条件下，捕集１ｍｉｎ，测得Ｐｂ、Ｃｕ和Ｃｄ的特征浓度分别为１８２×１０－３、１２６×１０－３和６７×１０－５ｍｇ／Ｌ，比常规火焰原子吸收光谱法的灵敏度分别提高１１０、３９和１５０倍，用本方法测定地表水、茶叶和人发等环境样品中的微量Ｐｂ、Ｃｕ和Ｃｄ，结果满意。
The optimal measuring conditions of slottedtube atomtrapping atomic absorption spectrometry of Pb,Cu and Cd were examined in detail.The results show that the characteristic concentrations measured after trapping for 1min under definite conditions were 182×10-3,126×10-3 and 67×10-5mg/L for Pb,Cu and Cd,respectively.Thus slotted tube atomtrapping AAS yields increase in sensitivety for Pb,Cu and Cd by 110,39 and 150 fold,respectively,in comparison with the conventional FAAS.Trace elements Pb,Cu and Cd in earth surface water,tea and hair were determined by slotted tube atomtrapping.Satisfactory results were obtained.
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
1998年第3期347-350,共4页
Spectroscopy and Spectral Analysis
基金
湖北省自然科学基金
关键词
原子吸收光谱
测定
分析
环境样品
铅
铜
镉
Atomtrapping, Atomic absorption spectrometry, Pb, Cu, Cd
