| 利用锶特效树脂分离富集岩石样品中的锶及测定~(87)Sr/~(86)Sr |
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| 引用本文： | 唐索寒,朱祥坤,李津,王进辉,闫斌.利用锶特效树脂分离富集岩石样品中的锶及测定~(87)Sr/~(86)Sr[J].分析化学,2010,38(7). |
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| 作者姓名： | 唐索寒 朱祥坤 李津 王进辉 闫斌 |
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| 作者单位： | 国土资源部同位素地质重点实验室,中国地质科学院地质研究所,北京,100037 |
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| 摘 要： | 本研究以Sr-Spec树脂作为分离锶的特效树脂,以HNO3为淋洗液,通过改变HNO3的浓度,将地质岩石样品中的锶分离富集.实验结果表明,Sr与基质元素和Rb能很好地分离.利用Sr-Spec树脂分离国际标准物质SRM607、日本岩石标样JA-2、JB-2、JF-2和国家标准物质GBW04111后, 测得同位素比值87Sr/86Sr结果及误差(2σ)分别为1.200660±22, 0.706350±17, 0.703640±16, 0.709692±22和0.700008±23.相对于常规的阳离子树脂分离方法,此方法所用淋洗试剂量少,分离流程短,可以降低实验空白并提高工作效率.因此,Sr-Spec树脂分离法是快速分离富集不同岩性地质样品的Sr并测定87Sr/86Sr的有效方法.
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| 关 键 词： | 树脂 锶的分离 热电离质谱 同位素比值 地质标样 |
Separation and Isotopic Measurement of Sr in Rock Samples Using Selective Specific Resins |
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| TANG Suo-Han,ZHU Xiang-Kun,LI Jin,WANG Jin-Hui,YAN Bin.Separation and Isotopic Measurement of Sr in Rock Samples Using Selective Specific Resins[J].Chinese Journal of Analytical Chemistry,2010,38(7). |
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| Authors: | TANG Suo-Han ZHU Xiang-Kun LI Jin WANG Jin-Hui YAN Bin |
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| Institution: | TANG Suo-Han,ZHU Xiang-Kun,LI Jin,WANG Jin-Hui,YAN Bin (Key Laboratory of Isotopic Geology,Ministry of Land and Resources,Institute of Geology,Chinese Academy of Geological Sciences,Beijing 100037) |
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| Abstract: | A method for the separation and preconcentration of Sr in rock samples by Sr-spec selective specific resin was established for the analysis of 87 Sr/86 Sr ratios by mass spectrometry.Detailed experiments have been carried out to investigate the behaviour of matrix elements and Rb during the separation.Experiment results showed that matrix elements and Rb in rock sample could be effectively removed from the resin using 6 mol/L HNO3,and Sr could be recovered using 0.05 mol/L HNO3.The method was used to separa... |
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| Keywords: | Sr-selective specific resin Separation of strontium Thermal ionization mass spectrometry Isotope ratio Reference material |
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