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

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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.