Fast analysis method of strontium-90 after separation using crown ether resin  

作　　者：Fei Chen Linlin Yan Fei Gao Xiao Ge Qiang Xiong Zhen Zhang Feng Zhang Jingguang Fan 

机构地区：[1]National Center for Occupational Safety and Health,National Health Commission of the People's Republic of China,Beijing 102308,China [2]Institute of Food Safety,Chinese Academy of Inspection&Quarantine,Beijing 100123,China [3]School of Public Health,Hengyang Medical School,University of South China,Hengyang,Hunan 421001,China

出　　处：《Radiation Medicine and Protection》2022年第2期96-100,共5页放射医学与防护（英文）

基　　金：This work was supported by the National Key Research and Development Program of China(No.2017YFC1601602);Environmental Radioactivity Research Network Center(ERAN I-21-18);Key Program of Tianjin Municipal Natural Science Foundation(No.19JCZDJC40500);Program of National Center for Occupational Safety and Health(No.2020010).

摘　　要：Objective:To explore the separation condition for 90Sr using crown ether resin,in order to establish a fast method for analysis of 90Sr in food and environmental samples.Methods:Stable strontium isotope(88Sr)was used to simulate the radioactive 90Sr,and the concentration of 88Sr in elution solution was detected using inductively coupled plasma mass spectrometry(ICP–MS).The separation conditions were investigated through batch experiment.Results:Under the optimized experimental conditions,the maximum adsorption capacity of crown ether resin was 22.28 mg/g.4.0–8.0 mol/L nitric acid made it easier for the Sr2þto load on the resin,and 20 mL ultrapure water was used to rinse the chromatographic column to achieve a good separation effect,by which the recoveries of Sr2þwere nearly close to 100%.The average recovery rates of 4 samples were 60.25%,69.26%,75.09%and 66.33%,respectively.Conclusions:Crown ether resin has very good selectivity and adsorption for 90Sr.The optimized conditions were high-efficiency and easy to operate.The separation method has great potential for the fast analysis of 90Sr in food and environmental samples.

关 键 词：STRONTIUM-90 RESIN Environmental samples RADIOACTIVITY 

分 类 号：O64[理学—物理化学]