Advances in x-ray spectrometry: new science through new sources

该提案旨在推进X射线光谱测定法，新的科学来自新的辐射源。该研究涉及X射线荧光和X射线吸收技术的开发和使用，用于检测铅、砷和硒等微量元素。该提案涉及这些方法带来的科学挑战和机遇。即使是中等水平的铅和砷暴露的影响也可能是严重的。使用新的基于实验室和同步加速器的来源，该提案旨在显着提高我们对这些元素的分布和命运的理解。目标包括在以下相互关联的研究主题中使用X射线光谱法：（1）开发用于微量元素检测的创新和紧凑的单能量X射线方法;（2）优化和验证完全便携式微型X射线管技术;以及（3）通过加拿大光源的同步加速器辐射进行调查，以探测组织样本中的元素分布和化学形式。

This proposal seeks to advance x-ray spectrometry, with new science resulting from new radiation sources. The research involves the development and use of x-ray fluorescence and x-ray absorption techniques for the detection of trace elements such as lead, arsenic, and selenium. The proposal is concerned with the scientific challenges and opportunities posed by these methods. Effects from exposure to even moderate levels of lead and arsenic may be severe. Using novel lab-based and synchrotron-based sources, this proposal aims to significantly improve our understanding of the distribution and fate of such elements. Objectives include the use of x-ray spectrometry in the following interrelated themes of research: (1) development of an innovative and compact mono-energetic x-ray approach for trace element detection; (2) optimization and validation of fully portable miniature x-ray tube techniques; and (3) investigations through synchrotron radiation at the Canadian Light Source to probe elemental distribution and chemical form in tissue samples.