Publications by authors named "Elstan D Desouza"
Arsenic (As) distribution in nail clippings from three healthy human subjects was investigated using the microbeam experimental setup of the hard x-ray micro-analysis (HXMA) beamline from the Canadian Light Source (CLS) synchrotron. A pair of toenail and fingernail clippings was collected from each of three subjects (one contributed two fingernail clippings). The fingernail and toenail clippings were embedded in polyester resin and cut in cross-sectional slices with an average thickness of 270 µm.
View Article and Find Full Text PDFArticle Synopsis
- In vivo monitoring of trace and biometals in skin often uses calibration phantoms that assume a uniform distribution of elements, but layered calibration could enhance reliability.
- This study analyzed the distribution of iron, calcium, and zinc in human skin samples from various body locations using micro-XRF scanning technology.
- Findings showed significant differences in elemental content between the epidermal and dermal layers, suggesting the importance of accounting for depth distribution when using phantoms for skin element quantification.