摘要
本文提出了以聚二硫代氨基甲酸盐螯合树脂分离预富集－ＩＣＰ－ＡＥＳ测定海水中稀有金属Ｕ，Ｎｂ，Ｔａ，Ｚｒ和Ｈｆ的新方法。对上述元素与螯合树脂在不同ｐＨ下的静态交换行为进行了研究。考察了溶液酸度，流速及基体元素对分离富集效果的影响，比较了吸附在树脂上的待测元素的解脱方法。在优化的实验条件下，方法的相对检出限为０．０２～０．１７ｎｇ／ｍＬ，应用于海水试样分析时，其回收率在８１％～９４％之间。
new method for thedetermination ofscme rare metals in seawater by ICP-AESwith column preconcentration using poly-dithiocarbamate chelating resin is developedin this paper. The exchange behaviour ofmetalic ions U(Ⅳ),Nb(Ⅴ),Ta(Ⅴ),Zr(Ⅳ)and Hf(Ⅳ)on the Chelating resin was stud-ied in detail. The injluence of acid concentra-tion,flow rate of the sample and the matrixelements on preconcentration process was in-vestigated.A comparison of desorption tech-niques of the analyte from the column wasmade. Under optimal conditions,the detec-tion limits for U,Nb,Ta,Zr and Hf are inthe range of 0.02～0.17ng/mL,The pro-posed method has been used in the analysisof seawater samples with recovery of 81%～94%。
出处
《分析试验室》
CAS
CSCD
北大核心
1995年第2期1-4,共4页
Chinese Journal of Analysis Laboratory
关键词
铀
钽
锆
铌
ICP光谱
海水
螯合树脂
Plasma spectrometry
poly-dithiocarbarnate resin
seawater sample
U、Nb、Ta、Zr and Hf determination
