采用TEVA树脂通过Q-ICP-MS测定水样中的铀同位素。
Use of TEVA resin for the determination of U isotopes in water samples by Q-ICP-MS.
作者信息
Tagami K, Uchida S
机构信息
Environmental and Toxicological Sciences Research Group, National Institute of Radiological Sciences, Anagawa 4-9-1, Inage-ku, Chiba-shi, Chiba 263-8555, Japan.
出版信息
Appl Radiat Isot. 2004 Aug-Sep;61(2-3):255-9. doi: 10.1016/j.apradiso.2004.03.055.
In order to measure uranium isotopic mass ratio in natural water samples by Q-ICP-MS, an application of TEVA resin (Eichrom) was studied to separate and concentrate U. After being evaporated to dryness, the sample residue was dissolved in 6 M HCl, then, TEVA extraction was carried out. U extracted on the resin could be removed with 20 ml of 1 M HCl (U fraction) when Fe content was lower than 2 mg. U recovery in U fraction showed a negative correlation with Fe content in the samples.
为了通过Q-电感耦合等离子体质谱法测量天然水样中的铀同位素质量比，研究了应用TEVA树脂（艾克罗姆公司）分离和浓缩铀。样品蒸发至干后，将残渣溶解于6 M盐酸中，然后进行TEVA萃取。当铁含量低于2毫克时，用20毫升1 M盐酸（铀组分）可洗脱树脂上吸附的铀。铀组分中的铀回收率与样品中的铁含量呈负相关。
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