An application of micro X-ray fluorescence computed tomography for the determination of three-dimensional elemental distribution in a single hair strand. Issue 5 (15th April 2021)

• Record Type: Journal Article
• Authors: Kondo, Ryosuke; Yamato, Takuma; Munoz-Noval, Alvaro; Honda, Sadao; Nishiwaki, Yoshinori; Komaguchi, Kenji; Hayakawa, Shinjiro
• Is Part Of: Journal of analytical atomic spectrometry. Volume 36:Issue 5(2021)
• Page Start: 1041
• Page End: 1046
• Publication Date: 2021-04-15
• Subjects: Atomic spectra -- Periodicals; Atomic absorption spectroscopy -- Periodicals; 543.0858
• DOI: 10.1039/d1ja00022e
• Languages: English
• ISSNs: 0267-9477

Abstract

Abstract : Concentrations of Zn and Br along the hair strand, and CT images. Abstract : Three-dimensional imaging of trace elements in a single hair strand was achieved by a micro X-ray fluorescence computed tomography (μXRF-CT) using synchrotron radiation. A simple rotational mechanism was attached to a two-dimensional XRF imaging system and a wide range of longitudinal scans was realized. The experimental determination of centroid of projections helped to maintain the spatial resolution around 2 μm that was determined by the beam size. Determination of trace element concentration in a single hair strand was realized by combining measurements of both scattered X-ray and XRF intensities, and longitudinal changes in concentration were observed. Cross-sectional distribution of Br, Zn, Fe and Cu were obtained at the positions of interest after the longitudinal scan, and changes in distribution forms were observed.