| ^232U示踪法测定样品中铀钍同位素的比活度 |
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| 引用本文： | 汪苓,田桂英.^232U示踪法测定样品中铀钍同位素的比活度[J].铀矿地质,1997,13(1):49-54. |
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| 作者姓名： | 汪苓 田桂英 |
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| 作者单位： | 核工业北京地质研究院 |
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| 摘 要： | 本文介绍了用（２３２Ｕ）作示踪同位素，测定岩石、土壤、水体中铀同位素及岩石中钍同位素比活度的方法。详细介绍了用两种标准方法［１．２］对样品进行化学富集、纯化、分离以及用电沉积法制备铀、钍α源的方法。对α射线多道能谱测量系统的配置，工作条件的选择，本底测定，实验样品的测定，推导出的计算公式、测量结果等均做了详实的论述。
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| 关 键 词： | ~（232）U示踪法，色层分离，测量α能谱，铀钍同位素 |
DETERMINATION OF SPECIFIC ACTIVITY OF URANIUM AND THORIUM ISOTOPES IN SAMPLES BY ~(232)U TRACER METHOD |
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| Wang Ling, Tian Guiying, Shen Zhuqin.DETERMINATION OF SPECIFIC ACTIVITY OF URANIUM AND THORIUM ISOTOPES IN SAMPLES BY ~(232)U TRACER METHOD[J].Uranium Geology,1997,13(1):49-54. |
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| Authors: | Wang Ling Tian Guiying Shen Zhuqin |
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| Abstract: | This paper presents a determination method of specific activity for uranium isotope in rocks, soil, water and thorium isotope in rocks using 232U as a tracer isotope. A detailed introduction is given to the chemical preconcentration, purification and separation of samples with two standard methods and the electric deposit method for the preparation of the a source of uranium and thorium. The collocation of the a-ray multi-channel spectrometric system,the selection of the working conditions, the determination of the background and test samples, the deduced calculation formula and the analytical results are discussed in detail. |
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| Keywords: | ~(232)U tracer method Chromatographic separation Determination of a-spectrum Uranium-thorium isotope |
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