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首页> 外文会议>Advances in X-ray analysis (ICDD2001) >X-RAY FLUORESCENCE MICROANALYSIS OF BIOMEDICAL AND ENVIRONMENTAL SAMPLES
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X-RAY FLUORESCENCE MICROANALYSIS OF BIOMEDICAL AND ENVIRONMENTAL SAMPLES

机译：生物医学和环境样品的X射线荧光显微分析

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摘要

A feasibility study of microanalysis of biological materials by micro-beam X-ray fluorescencernspectrometry (MXRF) was completed. The main goal of this research was topographic andrnquantitative evaluation of selected elements in tissue samples from the human brain. MXRFrnspectrometry utilizing capillary optics with an effective micro-beam diameter of about 300 μmrnwas applied to study the elemental distribution in thin, lyophilized tissue samples. Variations ofrnP, Cl, K, Ca and Fe concentrations with micro-beam position were detected. The results wererncompared to microscopic observations. The same MXRF technique was applied for analysis ofrndried cerebrospinal fluid on a thin film sample support. The distribution of selected elements inrnthe residue created during the drying process was studied. Spots having crystal structure wererndiscovered. The MXRF analysis of organic samples was improved in several ways. Spectralrninterference between scattered Mo L lines originating from the X-ray tube anode and P and S Kαrnlines were eliminated. Concentrations of analytes were calculated using a fundamental parameterrnapproach.
机译：通过微束X射线荧光光谱法（MXRF）完成了生物材料微分析的可行性研究。这项研究的主要目的是对人脑组织样本中选定元素的地形学和定量评估。 MXRFrn光谱法利用有效微束直径约为300μm的毛细管光学器件，用于研究薄冻干组织样品中的元素分布。检测到rnP，Cl，K，Ca和Fe浓度随微束位置的变化。结果与显微镜观察相比。相同的MXRF技术用于分析薄膜样品支架上的干燥脑脊髓液。研究了干燥过程中产生的残留物中所选元素的分布。发现具有晶体结构的斑点。通过多种方式改进了有机样品的MXRF分析。消除了来自X射线管阳极的散射Mo L线与P和SKαrn线之间的光谱干扰。使用基本参数法计算分析物的浓度。

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  • 来源
  • 会议地点 Steamboat Springs CO(US);Steamboat Springs CO(US);Steamboat Springs CO(US)
  • 作者

    M. Lankosz; M. Boruchowska; J. Ostachowicz; D. Adamek; B. Tomik;

  • 作者单位

    Faculty of Physics and Nuclear Techniques, University of Mining and Metallurgy, Kraków, Poland;

    rnFaculty of Physics and Nuclear Techniques, University of Mining and Metallurgy, Kraków, Poland;

    rnFaculty of Physics and Nuclear Techniques, University of Mining and Metallurgy, Kraków, Poland;

    rnNeurology Institute, Collegium Medicum, Jagiellonian University, Kraków, Poland;

    rnNeurology Institute, Collegium Medicum, Jagiellonian University, Kraków, Poland;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 X射线、紫外线、红外线;
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