【引用本文】 张丽, 周卫健, 常宏, 等. 暴露测年样品中26Al和10Be分离及其加速器质谱测定[J]. 岩矿测试, 2012, 31(1): 83-89.
 ,  ,  , et al. The Extraction of in-situ 10Be and 26Al from Rock Sample and Accelerator Mass Spectrometric Measurements[J]. Rock and Mineral Analysis, 2012, 31(1): 83-89.

暴露测年样品中26Al和10Be分离及其加速器质谱测定

1. 

中国科学院地球环境研究所黄土与第四纪地质国家重点实验室, 陕西 西安 710075

2. 

西安加速器质谱中心, 陕西 西安 710061

3. 

中国科学院研究生院, 北京 100049

4. 

中国科学院地球环境研究所黄土与第四纪地质国家重点实验室, 陕西 西安 710075

5. 

西安加速器质谱中心, 陕西 西安 710061

6. 

西安交通大学人居环境与建筑工程学院, 陕西 西安 710049

7. 

中国科学院地球环境研究所黄土与第四纪地质国家重点实验室, 陕西 西安 710075

8. 

中国科学院地球环境研究所黄土与第四纪地质国家重点实验室, 陕西 西安 710075

9. 

西安加速器质谱中心, 陕西 西安 710061

10. 

中国科学院地球环境研究所黄土与第四纪地质国家重点实验室, 陕西 西安 710075

11. 

西安加速器质谱中心, 陕西 西安 710061

12. 

中国科学院地球环境研究所黄土与第四纪地质国家重点实验室, 陕西 西安 710075

13. 

西安加速器质谱中心, 陕西 西安 710061

收稿日期: 2011-09-26 

基金项目: 国家重点基础研究发展计划(973计划)项目(2010CB833400) 国家自然科学基金项目(41023006)

The Extraction of in-situ 10Be and 26Al from Rock Sample and Accelerator Mass Spectrometric Measurements

1. 

State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China

2. 

Xi'an Accelerator Mass Spectrometry Center, Xi'an 710061, China

3. 

Graduate University of Chinese Academy of Sciences, Beijing 100049, China

4. 

State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China

5. 

Xi'an Accelerator Mass Spectrometry Center, Xi'an 710061, China

6. 

School of Human Settlement and Civil Engineering, Xi'an Jiaotong University, Xi'an 710049, China

7. 

State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China

8. 

State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China

9. 

Xi'an Accelerator Mass Spectrometry Center, Xi'an 710061, China

10. 

State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China

11. 

Xi'an Accelerator Mass Spectrometry Center, Xi'an 710061, China

12. 

State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710075, China

13. 

Xi'an Accelerator Mass Spectrometry Center, Xi'an 710061, China

Received Date: 2011-09-26

摘要:在已有实验流程基础上,建立并优化了石英样品中Be和Al提取、纯化等实验流程,设计的流程条件实验包括实验试剂、器皿和离子交换柱选择、离子交换树脂分离Be和Al时酸浓度选择等。结果表明,选择钢铁研究总院研制的9Be标准溶液作为10Be样品制备的载体;使用一次性实验器皿;选用4 cm规格的离子交换柱;用0.05 mol/L草酸和0.75 mol/L盐酸混合溶液洗脱吸附于阴离子树脂上的Al,可有效提取、纯化样品中的Be和Al。加速器质谱(AMS)测量结果显示,13组化学空白的10Be/9Be和26Al/27Al比值平均值分别为7.48×10-15和1.96×10-15,与国内已有宇宙成因核素实验室的结果(5×10-15~8×10-15)具有可比性。电感耦合等离子体发射光谱(ICP-AES)的测量结果表明,Be、Al回收率分别达90%和60%。基于新建立的实验流程分析了祁连山北侧金佛寺的一个岩石样品,获得了10Be和26Al的暴露年代分别为(10.7±1.0) ka和(10.0±1.2) ka,与前人研究结果一致。

关键词: 原地宇宙成因核素, 10Be, 26Al, 暴露测年, 加速器质谱

The Extraction of in-situ 10Be and 26Al from Rock Sample and Accelerator Mass Spectrometric Measurements

KEY WORDS: in-situ, cosmogenic, nuclide, 10Be, 26Al

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暴露测年样品中26Al和10Be分离及其加速器质谱测定

张丽, 周卫健, 常宏, 赵国庆, 宋少华, 武振坤