高铷/锶比地质样品中锶的共沉淀法快速分离及其高精度同位素测试

引用本文: 魏双, 奥琮, 刘郁, 刘文刚, 柳富田, 陈印, 张健, 周红英, 王力强. 高铷/锶比地质样品中锶的共沉淀法快速分离及其高精度同位素测试[J]. 分析化学, 2020, 48(1): 97-103. doi: 10.19756/j.issn.0253-3820.191398 shu

Citation: WEI Shuang, AO Cong, LIU Yu, LIU Wen-Gang, LIU Fu-Tian, CHEN Yin, ZHANG Jian, ZHOU Hong-Ying, WANG Li-Qiang. Rapid Separation of Strontium from Geological Samples with High Rubidium/Strontium Ratios by Coprecipitation and Precise Determination of Strontium Isotopic[J]. Chinese Journal of Analytical Chemistry, 2020, 48(1): 97-103. doi: 10.19756/j.issn.0253-3820.191398 shu

高铷/锶比地质样品中锶的共沉淀法快速分离及其高精度同位素测试

1.
中国地质调查局天津地质调查中心, 天津 300170;
2.
中国地质调查局铀矿地质重点实验室, 天津 300170;
3.
稀土资源利用国家重点实验室, 中国科学院长春应用化学研究所, 长春 130022
基金项目:
本文由中国地质调查局项目（Nos.DD20190338，DD20190119-06）和国家自然科学基金项目（No.41873066）资助

摘要: 高铷/锶（Rb/Sr）比地质样品Sr同位素的分析测试中，利用NaOH对样品进行共沉淀处理可有效去除Na、K等基体元素和对Sr测试产生同质异位素干扰的Rb。通过对反应温度、时间、碱浓度等条件进行优化，确立了最佳反应条件。结果表明，以2 mL 5%（w/V）NaOH为沉淀剂，100℃反应1 h，可去除99%以上的Rb、Na、K和Al，Sr回收率优于96%。共沉淀反应后，利用AG50W×12阳离子交换树脂仅需进行一次过柱分离即可获得高纯度Sr。NaOH（99.99%）经过纯化后用于共沉淀反应，不会引入基体元素，Sr的流程空白小于182 pg。对8种不同Rb/Sr比的岩石标准样品（JR-2、BCR-2、BHVO-2、W-2、AGV-2、JG-3、JA-3、GSP-2）进行分离，结合高灵敏度热电离质谱仪（TIMS）获得高精度Sr同位素比值。结果表明，共沉淀-阳离子交换树脂分离流程具有适用范围广且稳定可靠的优点，同时可节省大量无机酸，且耗时较短。通过共沉淀法预富集Sr，为高Rb/Sr比地质样品的Sr同位素测试提供了一种新的分离途径，具有重要的应用价值。

关键词:

English

Rapid Separation of Strontium from Geological Samples with High Rubidium/Strontium Ratios by Coprecipitation and Precise Determination of Strontium Isotopic

1.
Tianjin Center, China Geological Survey, Tianjin 300170, China;
2.
Key Laboratory of Uranium Geology, China Geological Survey, Tianjin 300170, China;
3.
State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
Received Date: 13 July 2019
Revised Date: 16 November 2019
Fund Project:
This work was supported by the Geological Survey of China (Nos. DD20190338, DD20190119-06) and the National Natural Science Foundation of China (No. 41873066).

Abstract: In analysis of strontium (Sr) isotope in geological samples with high rubidium (Rb)/Sr ratios, a large number of matrix elements (Na, K, etc.) and isobaric interference of Rb on Sr isotopic analysis were effectively removed by coprecipitation method using NaOH. The influence of reaction temperature, reaction time and alkali concentration were investigated, and the optimum reaction conditions were determined finally. The results showed that the removal rate of Rb, Na, K, Al was over 99% and the recovery of Sr was better than 96% by coprecipitation for 1 h using 2 mL of NaOH with a mass-to-volume ratio of 5% at 100℃. After coprecipitation, high purity Sr was obtained by a single separation and purification using AG50W×12 cation exchange resin. NaOH (99.99%) without adding excess matrix elements and the total procedure blanks of Sr was less than 182 pg. With this method, Sr isotope was separated from eight standard rock samples with different Rb/Sr ratios (JR-2, BCR-2, BHVO-2, W-2, AGV-2, JG-3, JA-3, GSP-2), and then high precision determination of Sr isotope ratios was obtained by highly sensitive thermal ionization mass spectrometer (TIMS). The result showed that the coprecipitation-cation exchange resin separation process had many advantages such as wide application range, stability and reliability, low consumption of inorganic acids and short reaction time. Preconcentration of Sr by the coprecipitation method provided a new separation way for Sr isotope determination in geological samples with high Rb/Sr ratios, showing an important application value.

Key words:

1. [1]
  Bentahila Y, Othman D B, Luck J M. Chem. Geol.,2008,248(1-2):62-82
2. [2]
  Blum J D, Erel Y. Nature,1995,373:415-418
3. [3]
  Dou Y G, Yang S Y, Shi X F, Clift P D, Liu S F, Liu J H, Li C, Bi L, Zhao Y. Chem. Geol.,2016,425(1):93-109
4. [4]
  Li C F, Guo J H, Chu Z Y, Feng L J, Wang X C. Anal. Chem.,2015,87(14):7426-7432
5. [5]
  Zhong H, Zhu W G, Hu R Z, Xie L W, He D F, Liu F, Chu Z Y. Lithos,2009,110(1-4):109-128
6. [6]
  LIU Wen-Gang, LIU Hui, LI Guo-Zhan, ZHOU Hong-Ying, XIAO Zhi-Bin, TU Jia-Run, LI Hui-Min. Acta Geologica Sinica,2017,91(11):2584-2592 刘文刚, 刘卉, 李国占, 周红英, 肖志斌, 涂家润, 李惠民.地质学报,2017,91(11):2584-2592
7. [7]
  TANG Suo-Han, ZHU Xiang-Kun, LI Jin, WANG Jin-Hui, YAN Bin. Chinese J. Anal. Chem., 2010, 38(7):999-1002 唐索寒, 朱祥坤, 李津, 王进辉, 闫斌.分析化学,2010,38(7):999-1002
8. [8]
  LI Chao-Feng, LI Xian-Hua, GUO Jing-Hui, LI Xiang-Hui, LI Huai-Kun, ZHOU Hong-Ying, LI Guo-Zhan. Geochimica, 2011,40(5):399-406 李潮峰, 李献华, 郭敬辉, 李向辉, 李怀坤, 周红英, 李国占.地球化学,2011,40(5):399-406
9. [9]
  Harlou R, Pearson D G, Nowell G M, Ottley C J, Davidson J P. Chem. Geol.,2009,260(3):254-268
10. [10]
  Li C F, Chen F K, Li X H. Int. J. Mass Spectrom.,2007,266(1-3):34-41
11. [11]
  Chu Z Y, Guo J H, Yang Y H, Qi L, Li C F. Geostand. Geoanal. Res.,2014,38(1):61-72
12. [12]
  LIU Wen-Gang, LI Guo-Zhan, LIU Hui, CHEN Yin, XIAO Zhi-Bin, ZHOU Hong-Ying, ZHANG Jian, TU Jia-Run, LI Hui-Min. Acta Geoscientica Sinica,2018,39(1):119-124 刘文刚, 李国占, 刘卉, 陈印, 肖志斌, 周红英, 张健, 涂家润, 李惠民.地球学报,2018,39(1):119-124
13. [13]
  Li C F, Li X H, Li Q L, Guo J H, Li X H, Yang Y H. Anal. Chim. Acta,2012,727(10):54-60
14. [14]
  LIU Wen-Gang, LI Zhi-Dan, WEI Shuang, CHEN Ji, LIU Yu, AO Cong, XIAO Zhi-Bin, ZHOU Hong-Ying, LIU Hui. Chinese J. Anal. Chem., 2019,47(7):1054-1060 刘文刚, 李志丹, 魏双, 陈继, 刘郁, 奥琮, 肖志斌, 周红英, 刘卉.分析化学,2019,47(7):1054-1060
15. [15]
  MA Yan-Lin, GUO Chun-Ping, LIU Hong-Yan. Journal of Changchun University of Earth Sciences,1995,25(2):229-231 马雁林, 郭春萍, 刘红艳.长春地质学院学报,1995,25(2):229-231
16. [16]
  LI Hua-Qin, YIN Guo-Shi. Acta Petrologica Mineralogica et Analytica,1985,4(3):238-241 李华芹, 尹国师.岩石矿物及测试,1985,4(3):238-241
17. [17]
  Wu J F, Boyle E A. Anal. Chem.,1997,69(13):2464-2470
18. [18]
  LIU Wei, SONG Jin-Ming, YUAN Hua-Mao, LI Xue-Gang, LI Ning, DUAN Li-Qin. Journal of Instrumental Analysis,2017,36(4):471-477 刘伟, 宋金明, 袁华茂, 李学刚, 李宁, 段丽琴.分析测试学报,2017,36(4):471-477
19. [19]
  Ardini F, Magi E, Grotti M. Anal. Chim. Acta,2011,706:84-88
20. [20]
  Li Y T, Guo W, Wu Z W, Jin L L, Ke Y Q, Guo Q H, Hu S H. Microchem. J.,2016,126:194-199
21. [21]
  Sharma M, Wasserburg G J, Papanastassiou D A, Quick J E, Sharkov E V, Lazko E E. Earth Planet. Sci. Lett.,1995,135:101-114
22. [22]
  Sharma M, Wasserburg G J. Geochim. Cosmochim. Acta, 1996,60(22):4537-4550
23. [23]
  Greaves M J, Elderfield H, Klinkhammer G P. Anal. Chim. Acta, 1989,218:265-280
24. [24]
  Andersson P S, Wasserburg G J, Ingri J. Earth Planet. Sci. Lett.,1992,113:459-472
25. [25]
  Qi L, Zhou M F, Malpas J, Sun M. Geostand. Geoanal. Res., 2005,29(1):131-141
26. [26]
  Chu Z Y, Guo J H, Yang Y H, Qi L, Chen L, Li X C, Gao J F. J. Anal. At. Spectrom., 2012,27(3):509-515
27. [27]
  Charlier B L A, Ginibre C, Morgan D, Nowell G M, Pearson D G, Davidson J P, Ottley C J. Chem. Geol.,2006,232(3-4):114-133
28. [28]
  Yang Y H, Zhang H F, Chu Z Y, Xie L W, Wu F Y. Int. J. Mass Spectrom.,2010,290(2):120-126
29. [29]
  Li C F, Wu H Q, Chu Z Y, Wang X C, Li Y L, Guo J H. Microchem. J.,2019,146:906-913
30. [30]
  Dulski P. Geostand. Newslett.,2001,25(1):87-125
31. [31]
  Pereira J A M, Schwaab M, Delloro E, Pinto J C, Monteiro J L F, Henriques C A. Hydrometallurgy, 2009,96:6-13
32. [32]
  Jochum K P, Weis U, Schwager B, Stoll B, Wilson S A, Haug G H, Andreae M O, Enzweiler J. Geostand. Geoanal. Res.,2016,40(3):333-350
33. [33]
  Raczek I, Stoll B, Hofmann A W, Jochum K P. Geostand. Geoanal. Res.,2001,25(1):77-86
34. [34]
  Chen S, Wang X H, Niu Y L, Sun P, Duan M, Xiao Y Y, Guo P Y, Gong H M, Wang G D, Xue Q Q. Sci. Bull.,2017,62:277-289
35. [35]
  Weis D, Kieffer B, Maerschalk C, Barling J, Jong J, Williams G A, Hanano D, Pretorius W, Mattielli N, Scoates J S, Goolaerts A, Friedman R M, Mahoney J B. Geochem. Geophys. Geosyst.,2006,7(8):Q08006
36. [36]
  Raczek I, Jochum K P, Hofmann A W. Geostand. Geoanal. Res.,2003,27 (2):173-179
37. [37]
  Miyazaki T, Shuto K. Geochem. J.,1998,32:345-350
38. [38]
  Imai N, Terashima S, Itoh S, Ando A. Geostand. Newslett.,1995,19(2):135-213
39. [39]
  LI Qiu-Li, CHEN Fu-Kun, WANG Xiu-Li, LI Xiang-Hui, LI Chao-Feng. Chinese Science Bulletin,2006,51(3):321-325 李秋立, 陈福坤, 王秀丽, 李向辉, 李潮峰.科学通报,2006,51(3):321-325

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沈阳化工大学材料科学与工程学院沈阳 110142

高铷/锶比地质样品中锶的共沉淀法快速分离及其高精度同位素测试

English

Rapid Separation of Strontium from Geological Samples with High Rubidium/Strontium Ratios by Coprecipitation and Precise Determination of Strontium Isotopic

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通讯作者: 陈斌, bchen63@163.com

中国化学会秘书处

高铷/锶比地质样品中锶的共沉淀法快速分离及其高精度同位素测试

English

Rapid Separation of Strontium from Geological Samples with High Rubidium/Strontium Ratios by Coprecipitation and Precise Determination of Strontium Isotopic

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南： 你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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通讯作者: 陈斌, bchen63@163.com

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