| 生物样品的同步辐射定量分析 |
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| 引用本文： | 徐清,邵涵如.生物样品的同步辐射定量分析[J].核技术,1996,19(3):133-136. |
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| 作者姓名： | 徐清 邵涵如 |
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| 作者单位： | 中国科学院高能物理研究所 |
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| 基金项目： | 中国科学院核分析技术联合开放研究实验室资助,国家自然科学基金,北京正负电子对撞机国家实验室的资助 |
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| 摘 要： | 叙述了用同步辐射微探针对生物薄样中向量元素进行定量分析的方法，利用自制的微束标樯测定每个测量点的向量元素面密度并同时根据其在１７－２０ｋｅＶ能区中的Ｃｏｍｐｔｏｎ散射强度确定该测量点的样品质量厚度，成功地实现了元素浓度测量。
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| 关 键 词： | 同步辐射 微探针 定量分析 微量元素 生物样品 |
Quantitative analysis of biologied specimens by synchrotron radiation microprobe |
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| Xu Qing, Shao Hanru, Qian Qinfang, Liu Peng.Quantitative analysis of biologied specimens by synchrotron radiation microprobe[J].Nuclear Techniques,1996,19(3):133-136. |
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| Authors: | Xu Qing Shao Hanru Qian Qinfang Liu Peng |
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| Abstract: | A quantitative analysis method of the trace elements in biological specimens using the synchrotron radiation microprobe is described. The synchrotron radiation X-ray fluorescence microprobe system is calibrated by the standard sample specially prepared for the microprobe analysis. The mass thickness of each measured point is determined by measuring Compton scattering intensity in 17-20keV from the sample. In this way, concentration of the trace elements in samples can be measured correctly. The measured values of the biological standard reference material NBS-SRM-1577a are in good agreement with the certified values. The longitudinal concentration variations of some trace element in a single hair of pregnant women have been measured by this method. |
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| Keywords: | Synchrotron radiation microprobe Quantitative analysis Trace element Biological specimen |
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