90Sr在SuperLig®620固相萃取颗粒上的吸附性能研究

宋志君, 张生栋, 丁有钱, 张积桥

宋志君, 张生栋, 丁有钱, 张积桥. 90Sr在SuperLig®620固相萃取颗粒上的吸附性能研究[J]. 原子能科学技术, 2016, 50(10): 1741-1747. DOI: 10.7538/yzk.2016.50.10.1741
引用本文: 宋志君, 张生栋, 丁有钱, 张积桥. 90Sr在SuperLig®620固相萃取颗粒上的吸附性能研究[J]. 原子能科学技术, 2016, 50(10): 1741-1747. DOI: 10.7538/yzk.2016.50.10.1741
SONG Zhi-jun, ZHANG Sheng-dong, DING You-qian, ZHANG Ji-qiao. Adsorption of 90Sr on SuperLig®620 Solid Phase Extraction Beads[J]. Atomic Energy Science and Technology, 2016, 50(10): 1741-1747. DOI: 10.7538/yzk.2016.50.10.1741
Citation: SONG Zhi-jun, ZHANG Sheng-dong, DING You-qian, ZHANG Ji-qiao. Adsorption of 90Sr on SuperLig®620 Solid Phase Extraction Beads[J]. Atomic Energy Science and Technology, 2016, 50(10): 1741-1747. DOI: 10.7538/yzk.2016.50.10.1741

90Sr在SuperLig®620固相萃取颗粒上的吸附性能研究

Adsorption of 90Sr on SuperLig®620 Solid Phase Extraction Beads

  • 摘要: 为了建立SuperLig®620分离水中90Sr的方法,研究了接触时间、硝酸酸度、柠檬酸铵浓度、干扰核素等对90Sr在SuperLig®620固相萃取颗粒上分配系数Kd的影响。在0.1 mol/L HNO3介质中,接触时间大于30 min时,Kd大于1 000 mL/g。在c(H+)>1 mmol/L时,SuperLig®620不吸附137Cs、239Pu、90Y,但可吸附133Ba。通过调节解吸时柠檬酸铵的浓度,可排除133Ba对90Sr分离的干扰。研究了SuperLig®620色层柱分离水中90Sr的方法,将样品调节至0.1 mol/L HNO3上柱,首先用10Vc(柱体积Vc=0.1 mL)0.1 mol/L HNO3洗涤杂质,然后依次用9Vc 0.1 mol/L柠檬酸铵、13Vc 1.8 mol/L柠檬酸铵解吸90Sr、133Ba。该流程对90Sr的回收率大于99%,对主要干扰核素的去污因子大于3×103,适用于环境水中90Sr的分析。

     

    Abstract: For setting a procedure of separating 90Sr in aqueous using SuperLig®620, the performance of SuperLig®620 solid phase extraction beads for the adsorption of strontium in aqueous solution was studied. The influences of contact time, nitric acid concentration, strontium carrier and ammonium citrate concentration on distribution coefficient Kd were studied. The Kd is more than 1 000 mL/g when contact time is longer than 30 min in 0.1 mol/L HNO3. The resin can not adsorb any other radionuclides except 133Ba when c(H+)>1 mmol/L. 90Sr and 133Ba can be eluted respectively using different concentrations of ammonium citrate. Based on the results, a separation procedure of 90Sr in environmental water samples using SuperLig®620 solid phase extraction beads was presented. The optimal separation was found using a 0.1 mol/L HNO3 load solution with a 10Vc 0.1 mol/L HNO3 to wash potential interferences. Then 90Sr was eluted using 9Vc 0.1 mol/L ammonium citrate. The yield of strontium is more than 99%, and the decontamination factor is more than 3×103.

     

  • [1] 卢玉楷. 简明放射性同位素应用手册[M]. 上海:科学普及出版社,2004:20.
    [2] 朱寿彭,李章.放射性毒理学[M]. 苏州:苏州大学出版社,2004:268-269.
    [3] 潘自强. 电离辐射环境监测与评价[M]. 北京:原子能出版社,2009:165-224.
    [4] SUNDENMAND D N, MEINKE C W. The radiochemistry of calcium strontium and barium, NAS-NS-3010[R]. USA: AEC, 1960.
    [5] 弋昌厚,李福德,张荣德. HDEHP萃取测定锶-90的研究:正交实验选择HDEHP萃取的最佳条件[J]. 科学通报,1979,24(4):160-166.YI Changhou, LI Fude, ZHANG Rongde. Determination of 90Sr using HEDHP extraction: Optimization of HDEHP extraction conditions using orthogonal experimental design[J]. Chinese Science Bulletin, 1979, 24(4): 160-166(in Chinese).
    [6] TERA F, MORRISON G H. Radiochemical separations by isotopic ion exchange[J]. Anal Chem, 1966, 38(8): 959-964.
    [7] HORWITZ E P, CHIARIZIA R, DIETA M L. A novel strontium-selective extraction chromatographic resin[J]. Solv Extr Ion Exch, 1992, 10(2): 313-336.
    [8] 郭景儒. 用于放射性核素测量的固相萃取片技术[J]. 核科学与工程,2005,25(1):72-75.GUO Jingru. Solid phase extraction disk technique for analyzing radionuclides[J]. Chinese Journal of Nuclear Science and Engineering, 2005, 25(1): 72-75(in Chinese).
    [9] 杨素亮,丁有钱,张生栋,等. 固相萃取片分析环境水中90Sr[J]. 核化学与放射化学,2014,36(5):305-309.YANG Suling, DING Youqian, ZHANG Shengdong, et al. Determination of 90Sr in environmental water using EmporeTM stronium rad disk[J]. Journal of Nuclear and Radiochemistry, 2014, 36(5): 305-309(in Chinese).
    [10] DEVOL T A, CLEMENTS J P, FARAWILA A, et al. Characterization and application of SuperLig®620 solid phase extraction resin for automated process monitoring of 90Sr[J]. J Radoanal Nucl Chem, 2009, 282: 623-628.
    [11] EGOROV O B, O’HARA M J, GRATE J W. Equilibration-based preconcentrating minicolumn sensors for trace level monitoring of radionuclides and metal ions in water without consumable reagents[J]. Anal Chem, 2006, 78: 5480-5490.
    [12] 郭景儒. 裂变产物分析技术[M]. 北京:原子能出版社,2008:167.
    [13] 刘道平,彭碧玉. 偶氮胂Ⅲ光度法测定钢铁中微量锶[J]. 冶金分析,1987,7(1):13-16.LIU Daoping, PENG Biyu. Spectrophotometric determination of micro strontium in steel with arsenazo Ⅲ[J]. Metallurgical Analysis, 1987, 7(1): 13-16(in Chinese).
    [14] GB/T 14848-9地下水质量标准[S]. 北京:中国标准出版社,1993.
    [15] WANG X K, CHEN C L, HU W P, et al. Sorption of 243Am(Ⅲ) to multi-wall carbon nanotubes[J]. Environ Sci Technol, 2005, 39(8): 2856-2860.
    [16] 宋志君,丁有钱,张生栋,等. 90Y在不同材料容器壁上的吸附性能[J]. 核化学与放射化学,2010,32(2):118-120. SONG Zhijun, DING Youqian, ZHANG Shengdong, et al. Adsorption of 90Y on experimental vessel wall[J]. Journal of Nuclear and Radiochemistry, 2010, 32(2): 118-120(in Chinese).
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  • 刊出日期:  2016-10-19

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