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首页> 外文期刊>International journal of PIXE >QUANTITATIVE ANALYSIS OF BIOLOGICAL SAMPLES USING SYNCHROTRON RADIATION MICROPROBE
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QUANTITATIVE ANALYSIS OF BIOLOGICAL SAMPLES USING SYNCHROTRON RADIATION MICROPROBE

机译:同步辐射微探针对生物样品的定量分析

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摘要

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 - 20 keV from the sample. In this way, coocentration of the trace elements in samples can be measured correctly. The measured vahies 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.
机译:描述了使用同步辐射微探针对生物样品中痕量元素进行定量分析的方法。同步辐射X射线荧光微探针系统通过专门为微探针分析准备的标准样品进行校准。每个测量点的质量厚度通过测量样品中17-20 keV的康普顿散射强度来确定。这样,可以正确测量样品中痕量元素的浓度。生物标准参考物质NBS-SRM-1577a的测量值与认证值高度吻合。已经通过这种方法测量了孕妇单根头发中某些微量元素的纵向浓度变化。

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