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Bauters S, Tack P, Rudloff-Grund JH, Banerjee D, Longo A, Vekemans B, Bras W, Brenker FE, van Silfhout R, Vincze L. Polycapillary Optics Based Confocal Micro X-ray Fluorescence and X-ray Absorption Spectroscopy Setup at The European Synchrotron Radiation Facility Collaborative Research Group Dutch-Belgian Beamline, BM26A. Anal Chem 2018; 90:2389-2394. [PMID: 29318875 DOI: 10.1021/acs.analchem.7b05110] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A novel plug-and-play setup based on polycapillary X-ray optics enables three-dimensional (3D) confocal X-ray fluorescence (XRF) and X-ray absorption spectroscopy down to 8 × 8 × 11 μm3 (17 keV) at the European Synchrotron Radiation Facility Collaborative Research Group Dutch-Belgian Beamline, BM26A. A complete description and analytical characterization is presented, together with two recently performed experimental cases. In Deep Earth diamond São Luiz-Frankfurt am Main 16, an olivine-rich inclusion was mapped with full 3D XRF elemental imaging. The preliminary tests on Iron Gall ink contained in an historical document, a letter from the court of King Philip II of Spain, reveal both the delicate nature of Iron Gall ink and the lack of Fe-Ni chemical bonding.
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Affiliation(s)
- Stephen Bauters
- XMI, Department of Chemistry, Ghent University , Krijgslaan 281 S12, Ghent, East Flanders 9000, Belgium
| | - Pieter Tack
- XMI, Department of Chemistry, Ghent University , Krijgslaan 281 S12, Ghent, East Flanders 9000, Belgium
| | | | - Dipanjan Banerjee
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F box 2404, 3001 LEUVEN, Belgium
| | - Alessandro Longo
- Netherlands Organisation for Scientific Research (NWO), DUBBLE@ESRF, CS 40220, Grenoble F-38043, France
| | - Bart Vekemans
- XMI, Department of Chemistry, Ghent University , Krijgslaan 281 S12, Ghent, East Flanders 9000, Belgium
| | - Wim Bras
- Netherlands Organisation for Scientific Research (NWO), DUBBLE@ESRF, CS 40220, Grenoble F-38043, France
| | - Frank E Brenker
- Geoscience Institute - Mineralogy, Goethe University , Altenhöferallee 1, Frankfurt 60438, Germany
| | - Roelof van Silfhout
- Netherlands Organisation for Scientific Research (NWO), DUBBLE@ESRF, CS 40220, Grenoble F-38043, France.,University of Manchester , School of Electrical & Electronic Engineering, Manchester M13 9PL, England
| | - Laszlo Vincze
- XMI, Department of Chemistry, Ghent University , Krijgslaan 281 S12, Ghent, East Flanders 9000, Belgium
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Chen G, Chu S, Sun T, Sun X, Zheng L, An P, Zhu J, Wu S, Du Y, Zhang J. Confocal depth-resolved fluorescence micro-X-ray absorption spectroscopy for the study of cultural heritage materials: a new mobile endstation at the Beijing Synchrotron Radiation Facility. JOURNAL OF SYNCHROTRON RADIATION 2017; 24:1000-1005. [PMID: 28862622 DOI: 10.1107/s1600577517010207] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2016] [Accepted: 07/09/2017] [Indexed: 06/07/2023]
Abstract
A confocal fluorescence endstation for depth-resolved micro-X-ray absorption spectroscopy is described. A polycapillary half-lens defines the incident beam path and a second polycapillary half-lens at 90° defines the probe sample volume. An automatic alignment program based on an evolutionary algorithm is employed to make the alignment procedure efficient. This depth-resolved system was examined on a general X-ray absorption spectroscopy (XAS) beamline at the Beijing Synchrotron Radiation Facility. Sacrificial red glaze (AD 1368-1644) china was studied to show the capability of the instrument. As a mobile endstation to be applied on multiple beamlines, the confocal system can improve the function and flexibility of general XAS beamlines, and extend their capabilities to a wider user community.
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Affiliation(s)
- Guang Chen
- Institute of Health Sciences, Anhui University, Hefei 230601, People's Republic of China
| | - Shengqi Chu
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Tianxi Sun
- College of Nuclear Science and Technology, Beijing Normal University, Beijing 100975, People's Republic of China
| | - Xuepeng Sun
- College of Nuclear Science and Technology, Beijing Normal University, Beijing 100975, People's Republic of China
| | - Lirong Zheng
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Pengfei An
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Jian Zhu
- Department of Scientific History and Archaeometry, University of Chinese Academy of Sciences, Beijing 100949, People's Republic of China
| | - Shurong Wu
- Jingdezhen Ceramics Institute of Archaeology, Jingdezhen 333001, People's Republic of China
| | - Yonghua Du
- Heterogeneous Catalysis, Institute of Chemical and Engineering Sciences, Agency for Science, Technology and Research, 1 Pesek Road, Jurong Island 627833, Singapore
| | - Jing Zhang
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, People's Republic of China
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Tack P, Vekemans B, Laforce B, Rudloff-Grund J, Hernández WY, Garrevoet J, Falkenberg G, Brenker F, Van Der Voort P, Vincze L. Application toward Confocal Full-Field Microscopic X-ray Absorption Near Edge Structure Spectroscopy. Anal Chem 2017; 89:2123-2130. [PMID: 28208240 DOI: 10.1021/acs.analchem.6b04828] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Using X-ray absorption near edge structure (XANES) spectroscopy, information on the local chemical structure and oxidation state of an element of interest can be acquired. Conventionally, this information can be obtained in a spatially resolved manner by scanning a sample through a focused X-ray beam. Recently, full-field methods have been developed to obtain direct 2D chemical state information by imaging a large sample area. These methods are usually in transmission mode, thus restricting the use to thin and transmitting samples. Here, a fluorescence method is displayed using an energy-dispersive pnCCD detector, the SLcam, characterized by measurement times far superior to what is generally applicable. Additionally, this method operates in confocal mode, thus providing direct 3D spatially resolved chemical state information from a selected subvolume of a sample, without the need of rotating a sample. The method is applied to two samples: a gold-supported magnesia catalyst (Au/MgO) and a natural diamond containing Fe-rich inclusions. Both samples provide XANES spectra that can be overlapped with reference XANES spectra, allowing this method to be used for fingerprinting and linear combination analysis of known XANES reference compounds.
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Affiliation(s)
- Pieter Tack
- XMI, Department of Analytical Chemisty, Ghent University , Krijgslaan 281 S12, 9000 Ghent, Belgium
| | - Bart Vekemans
- XMI, Department of Analytical Chemisty, Ghent University , Krijgslaan 281 S12, 9000 Ghent, Belgium
| | - Brecht Laforce
- XMI, Department of Analytical Chemisty, Ghent University , Krijgslaan 281 S12, 9000 Ghent, Belgium
| | - Jennifer Rudloff-Grund
- Geoscience Institute-Mineralogy, Goethe University , Altenhöferallee 1, 60438 Frankfurt, Germany
| | - Willinton Y Hernández
- Comoc, Department of Inorganic and Physical Chemistry, Ghent University , Krijgslaan 281 S3, 9000 Ghent, Belgium
| | - Jan Garrevoet
- Deutsch Elektronen Synchrotron DESY, Photon Science , Notkestr 85, D-22603 Hamburg, Germany
| | - Gerald Falkenberg
- Deutsch Elektronen Synchrotron DESY, Photon Science , Notkestr 85, D-22603 Hamburg, Germany
| | - Frank Brenker
- Geoscience Institute-Mineralogy, Goethe University , Altenhöferallee 1, 60438 Frankfurt, Germany
| | - Pascal Van Der Voort
- Comoc, Department of Inorganic and Physical Chemistry, Ghent University , Krijgslaan 281 S3, 9000 Ghent, Belgium
| | - Laszlo Vincze
- XMI, Department of Analytical Chemisty, Ghent University , Krijgslaan 281 S12, 9000 Ghent, Belgium
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