| 加速器质谱(AMS)测量中~(41)Ca标准样品的制备 |
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| 引用本文： | 武绍勇,姜山,董克君,何明,许国基,游曲波.加速器质谱(AMS)测量中~(41)Ca标准样品的制备[J].质谱学报,2002,23(4):248-248. |
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| 作者姓名： | 武绍勇 姜山 董克君 何明 许国基 游曲波 |
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| 作者单位： | 中国原子能科学研究院核物理研究所,北京,102413 |
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| 摘 要： | 简要介绍加速器质谱 ( MAS)测量样品采用 Ca H2 以排除 4 1K的干扰。其制备主要包括两步 :首先是Ca O与过量的 Zr粉混合 ,在高温下还原出金属钙 ,然后金属钙与氢气在密闭容器中加热反应生成 Ca H2 。从金属钙到 Ca H2 的转换效率大于 90 %。
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| 关 键 词： | 质谱学 41Ca标样制备 氢化钙(CaH2) 加速器质谱计(AMS) |
| 文章编号： | 1004-2997(2002)04-0248-04 |
| 收稿时间： | 2002-09-02 |
| 修稿时间： | 2002年9月2日 |
Reference Samples Preparation of 41Ca in AMS Measurement |
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| WU Shao-yong,JIANG Shan,DONG Ke-jun,HE Ming,XU Guo-ji,YOU Qu-bo.Reference Samples Preparation of 41Ca in AMS Measurement[J].Journal of Chinese Mass Spectrometry Society,2002,23(4):248-248. |
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| Authors: | WU Shao-yong JIANG Shan DONG Ke-jun HE Ming XU Guo-ji YOU Qu-bo |
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| Abstract: | In order to eliminate the isobaric interference of 41K in the AMS measurement, the sample has to be in form of CaH 2. CaH 2 is produced in a two-step reduction process. First,CaO is converted into calcium metal by vacuum distillation from a heated mixture of CaO and excessive Zr powder. Then the calcium metal is transferred to a second system and heated in the presence of hydrogen gas to form CaH 2. The conversion efficiency of Ca metal to CaH 2 is larger than 90%. |
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| Keywords: | mass spectrometry reference samples of 41Ca calcium hydroxide (CaH 2) accelerator mass spectrometer(AMS) |
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