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| AG-MP-1M阴离子交换树脂分离-表面热电质谱法测定沉积物中的铅同位素组成 | |
| 引用本文： | 高博,涂湘林,刘颖,孙可,胡光黔,曾文,梁细荣,盛国英,傅家谟.AG-MP-1M阴离子交换树脂分离-表面热电质谱法测定沉积物中的铅同位素组成[J].岩矿测试,2008,27(1):9-11. |
| 作者姓名： | 高博 涂湘林 刘颖 孙可 胡光黔 曾文 梁细荣 盛国英 傅家谟 |
| 作者单位： | 1. 中国科学院广州地球化学研究所有机地球化学国家重点实验室,广东,广州,510640;中国科学院研究生院,北京,100049 2. 中国科学院广州地球化学研究所同位素年代学与地球化学重点实验室,广东,广州,510640 3. 中国科学院广州地球化学研究所有机地球化学国家重点实验室,广东,广州,510640 |
| 基金项目： | 国家自然科学基金 , 中国科学院知识创新工程项目 , 中国科学院知识创新工程项目 |
| 摘 要： | 利用新型阴离子交换树脂分离沉积物中的重金属Pb,采用表面热电离质谱法(TIMS)测定了沉积物样品中的Pb同位素组成。新型树脂为大孔径阴离子树脂AG-MP-1M,淋洗液采用低浓度的盐酸,避免了使用难以纯化的氢溴酸,可有效地降低试剂空白。通过对铅同位素标准物质NIST NBS-981的重复测试,方法的精密度(<0.5%,2s)和准确度均达到了应用研究的要求。对5个实际沉积物样品中的铅同位素组成进行测定,获得了理想的分析效果。 |
| 关 键 词： | 铅 同位素组成 阴离子交换树脂 分离 表面热电离质谱法 沉积物 |
| 文章编号： | 0254-5357（2008）01-0009-03 |
| 收稿时间： | 2007-07-05 |
| 修稿时间： | 2007-07-26 |
Separation of Lead in River Sediments Using AG-MP-1M Anion Exchange Resin and Measurement of Lead Isotope Composition by Thermal Ionization Mass Spectrometry |
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| GAO Bo,TU Xiang-lin,LIU Ying,SUN Ke,HU Guang-qian,ZENG Wen,LIANG Xi-rong,SHENG Guo-ying,FU Jia-mo.Separation of Lead in River Sediments Using AG-MP-1M Anion Exchange Resin and Measurement of Lead Isotope Composition by Thermal Ionization Mass Spectrometry[J].Rock and Mineral Analysis,2008,27(1):9-11. | |
| Authors: | GAO Bo TU Xiang-lin LIU Ying SUN Ke HU Guang-qian ZENG Wen LIANG Xi-rong SHENG Guo-ying FU Jia-mo |
| Institution: | 1(1.State Key Laboratory of Organic Geochemistry,Guangzhou Institute of Geochemistry,Chinese Academy of Sciences,Guangzhou 510640,China;2.Graduate University of Chinese Academy of Sciences,Beijing 100049,China;3.Key Laboratory of Isotope Geochronology and Geochemistry,Guangzhou Institute of Geochemistry,Chinese Academy of Sciences,Guangzhou 510640,China) |
| Abstract: | A method for the determination of lead isotope ratio (208Pb/204Pb,207Pb/204Pb,206Pb/204Pb) in sediment samples by thermal ionization mass spectrometry(TIMS) has been developed.A new-type of anion exchange resin AG-MP-1M is used in separation and purification of Pb in sediment samples with low concentration of HCl as eluting reagent to avoid the use of HBr,which is difficult for purification effectively reduce the regent blank.Pb isotope Standard Reference Material NIST NBS-981 has been repeatedly measured and the results are in good agreement with certified values with precision of less than 0.5%(2s).The method has been applied to the determination of Pb isotope composition in 5 sediment samples with satisfactory results. |
| Keywords: | lead isotope composition anion exchange resin separation thermal ionization mass spectrometry sediment |
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