Details of the Researcher

PHOTO

Kenichi Nakayama
Section
Institute for Materials Research
Job title
Research Associate
Degree

Papers 25

  1. Chlorine-interference-free Sample Treatment of Stainless Steel to Prepare Glass Bead Specimens for Chromium Quantification by X-ray Fluorescence Spectrometry Peer-reviewed

    Nakayama, Kenichi

    ISIJ International　66　(1)　168-170　2026/01

    DOI： 10.2355/isijinternational.ISIJINT-2025-311 　

    ISSN： 0915-1559

    eISSN： 1347-5460

  2. Decreased-interference Trace Nickel Quantification in Cobalt-base Alloy and Steel Samples using Microwave Induced Plasma Atomic Emission Spectrometry International-journal Peer-reviewed

    Nakayama, Kenichi

    ISIJ International　65　(4)　576-580　2025/04/15

    Publisher: Iron and Steel Institute of Japan

    DOI： 10.2355/isijinternational.isijint-2025-043 　

    ISSN： 0915-1559

    eISSN： 1347-5460

  3. Chlorine-free Microwave Digestion of Stainless Steel for Inductively Coupled Plasma Mass Spectrometric Analysis International-journal Peer-reviewed

    Nakayama, Kenichi

    ISIJ International　64　(10)　1615-1617　2024/08/01

    DOI： 10.2355/isijinternational.ISIJINT-2024-050 　

    ISSN： 0915-1559

  4. Selecting an Acid Mixture for Microwave Digestion of Diverse Steel Samples in Inductively Coupled Plasma Atomic Emission Spectrometric Analysis of Boron, Aluminum, Silicon, Phosphorous, and Alloyed Elements International-journal Peer-reviewed

    Nakayama, Kenichi

    ISIJ INTERNATIONAL　62　(5)　1023-1026　2022

    DOI： 10.2355/isijinternational.ISIJINT-2021-391 　

    ISSN： 0915-1559

    eISSN： 1347-5460

  5. Precise Quantification of Tungsten in Tool Steel Samples by Simultaneous Measurement of Vanadium Internal Standard in Continuum-light-source Flame Atomic Absorption Spectrometry International-journal Peer-reviewed

    Nakayama, Kenichi

    ISIJ INTERNATIONAL　62　(5)　849-853　2022

    DOI： 10.2355/isijinternational.ISIJINT-2021-360 　

    ISSN： 0915-1559

    eISSN： 1347-5460

  6. Precise Quantification of Tungsten in Tool Steel Samples by Simultaneous Measurement of Vanadium Internal Standard in Continuum -light-source Flame Atomic Absorption Spectrometry Peer-reviewed

    Nakayama, Kenichi

    TETSU TO HAGANE-JOURNAL OF THE IRON AND STEEL INSTITUTE OF JAPAN　109　(7)　9-14　2023/07

    DOI： 10.2355/tetsutohagane.TETSU-2023-007 　

    ISSN： 0021-1575

    eISSN： 1883-2954

  7. Multicomponent Internal Standard Methods for Determination of Vanadium, Chromium, Nickel, and Copper in Tool Steel Samples in Continuum-light-source Flame Atomic Absorption Spectrometry International-journal Peer-reviewed

    Nakayama, Kenichi, Wagatsuma, Kazuaki

    ISIJ INTERNATIONAL　61　(7)　2122-2126　2021/07

    DOI： 10.2355/isijinternational.ISIJINT-2020-732 　

    ISSN： 0915-1559

    eISSN： 1347-5460

  8. Oxidative Quaternary Acidic Mixture on Microwave-assisted Digestion for High-Carbon Iron Samples International-journal Peer-reviewed

    Nakayama, Kenichi, Wagatsuma, Kazuaki

    ISIJ INTERNATIONAL　61　(7)　2181-2184　2021/07

    DOI： 10.2355/isijinternational.ISIJINT-2020-716 　

    ISSN： 0915-1559

    eISSN： 1347-5460

  9. Absorption-free calibration on X-ray fluorescence analysis of high-speed steel with glass bead preparation International-journal Peer-reviewed

    Nakayama, Kenichi, Wagatsuma, Kazuaki

    X-RAY SPECTROMETRY　49　(2)　332-337　2020/03

    DOI： 10.1002/xrs.3134 　

    ISSN： 0049-8246

    eISSN： 1097-4539

  10. Borate Fusion Preparation of High-speed Steel for Determination of Vanadium by Flame Atomic Absorption Spectrometry with a Continuum-light-source Spectrometer System International-journal Peer-reviewed

    Nakayama, Kenichi, Wagatsuma, Kazuaki

    ISIJ INTERNATIONAL　60　(4)　812-814　2020

    DOI： 10.2355/isijinternational.ISIJINT-2019-601 　

    ISSN： 0915-1559

    eISSN： 1347-5460

  11. Development of an Iron Internal Standard Method Using a Molecular Beam of Phosphorus Oxide for Determination of Nickel in Steel Samples by Continuous Source Flame Atomic Absorption Spectrometry Peer-reviewed

    Kenichi Nakayama, Kazuaki Wagatsuma

    BUNSEKI KAGAKU　69　(4-5)　219-223　2020

    DOI： 10.2116/bunsekikagaku.69.219 　

    ISSN： 0525-1931

  12. Application of Quaternary Acid Mixture to Microwave Digestion Effective for Various Kinds of Steel Samples International-journal Peer-reviewed

    Nakayama, Kenichi, Wagatsuma, Kazuaki

    ISIJ INTERNATIONAL　60　(1)　193-195　2020

    DOI： 10.2355/isijinternational.ISIJINT-2019-393 　

    ISSN： 0915-1559

    eISSN： 1347-5460

  13. Sample Pre-treatment of Blast Furnace Slag by Glass Bead Preparation for ICP-AES Analysis Peer-reviewed

    Nakayama Kenichi, Wagatsuma Kazuaki

    BUNSEKI KAGAKU　67　(11)　673-679　2018/11

    DOI： 10.2116/bunsekikagaku.67.673 　

    ISSN： 0525-1931

  14. A New Sample Preparation Method Using Borate Fusion for X-ray Fluorescence Analysis of Vanadium, Chromium, Cobalt, Molybdenum, and Tungsten in High-speed Steel International-journal Peer-reviewed

    Nakayama, Kenichi, Wagatsuma, Kazuaki

    ISIJ INTERNATIONAL　56　(12)　2330-2332　2016/12

    DOI： 10.2355/isijinternational.ISIJINT-2016-435 　

  15. Rapid Borate Fusion Pre-treatment for ICP-AES Determination of Tungsten in High-speed Steel International-journal Peer-reviewed

    Nakayama, Kenichi, Wagatsuma, Kazuaki

    ISIJ INTERNATIONAL　56　(6)　1114-1116　2016/07

    DOI： 10.2355/isijinternational.ISIJINT-2015-648 　

  16. Weight-based Synthesized Standards Preparation for Correction-free Calibration in X-ray Fluorescence Determination of Tungsten in High-speed Steel International-journal Peer-reviewed

    Nakayama, Kenichi, Wagatsuma, Kazuaki

    ANALYTICAL SCIENCES　31　(8)　851-854　2015/08

    DOI： 10.2116/analsci.31.851 　

  17. Loose-powder technique for X-ray fluorescence analysis of ancient pottery using a small (100 mg) powdered sample International-journal Peer-reviewed

    Ichikawa, Shintaro, Nakayama, Kenichi, Nakamura, Toshihiro

    X-RAY SPECTROMETRY　41　(5)　288-297　2012/09

    DOI： 10.1002/xrs.2394 　

  18. Undersized (12.5 mm diameter) glass beads with minimal amount (11 mg) of geochemical and archeological silicic samples for X-ray fluorescence determination of major oxides International-journal Peer-reviewed

    Nakayama, Kenichi, Nakamura, Toshihiro

    X-RAY SPECTROMETRY　41　(4)　225-234　2012/07

    DOI： 10.1002/xrs.2382 　

  19. X-Ray Fluorescence Determination of Major Oxides in Ancient Ceramics ― Glass Bead Specimens with Minimal Amount (11 mg) of Sample for Routine Analyses Peer-reviewed

    Nakayama, Kenichi, Ichikawa, Shintaro, Nakamura, Toshihiro

    Advances in X-Ray Chemical Analysis, Japan　43　201-210　2012

    Publisher: The Discussion Group of X-Ray Analysis, The Japan Society for Analytical Chemistry

    DOI： 10.57415/xshinpo.43.0_201 　

    More details Close

    Amount of archaeological sample for destructive pretreatment should be minimized. For X-ray fluorescence determination of major oxides (Na2O, MgO, Al2O3, SiO2, P2O5, K2O, CaO, TiO2, MnO, and total Fe2O3), very small amount (11 mg) of sample powder was used to prepare glass bead specimen. Pulverized sample (ancient potteries and igneous rocks) was mixed with 300-times amount of lithium tetraborate as an alkali flux; the powdery mixture was fused and vitrified. Prepared glass beads were measured using wavelength dispersive X-ray fluorescence spectrometer, and calibrated on the basis of synthetic standards that were prepared by compounding such chemical reagents as oxides and carbonates. Major oxides in igneous rocks (obsidians, granitic rocks, and basaltic rocks) and ancient ceramics were determined with calibration curves of two dilution ratios―1:10 and 1:300― and semi-fundamental parameter calculation.

  20. Glass bead with minimized amount (11 mg) of sample for X-ray fluorescence determination of archaeological ceramics International-journal Peer-reviewed

    Nakayama, Kenichi, Ichikawa, Shintaro, Nakamura, Toshihiro

    X-RAY SPECTROMETRY　41　(1)　16-21　2012/01

    DOI： 10.1002/xrs.1371 　

  21. Glass-bead/X-ray fluorescence analysis of earthenware body - sampling from heterogeneous earthenware International-journal Peer-reviewed

    Ichikawa, Shintaro, Nakayama, Kenichi, Nakamura, Toshihiro

    X-RAY SPECTROMETRY　41　(1)　22-33　2012/01

    DOI： 10.1002/xrs.1372 　

  22. Preparation and Evaluation of a Chrysotile Asbestos-containing Standard Material for Validating X-Ray Diffractometric Quantitation International-journal Peer-reviewed

    Asahi, Tomoharu, Kobayashi, Shinji, Nakayama, Kenichi, Konya, Takayuki, Fujinawa, Go, Nakamura, Toshihiro

    ANALYTICAL SCIENCES　27　(12)　1217-1221　2011/12

    DOI： 10.2116/analsci.27.1217 　

  23. Estimation of Purity of Chrysotile Asbestos by X-ray Diffractometry/Rietveld Refinement International-journal Peer-reviewed

    Asahi, Tomoharu, Matsudaira, Takaomi, Kobayashi, Shinji, Nakayama, Kenichi, Nakamura, Toshihiro

    ANALYTICAL SCIENCES　26　(12)　1295-1300　2010/12

    DOI： 10.2116/analsci.26.1295 　

  24. Glass beads/x-ray fluorescence analyses of 42 components in felsic rocks International-journal Peer-reviewed

    Nakayama, Kenichi, Shibata, Yasuhiro, Nakamura, Toshihiro

    X-RAY SPECTROMETRY　36　(2)　130-140　2007/03

    DOI： 10.1002/xrs.936 　

  25. X-ray fluorescence analysis of rare earth elements in rocks using low dilution glass beads International-journal Peer-reviewed

    Nakayama, K, Nakamura, T

    ANALYTICAL SCIENCES　21　(7)　815-822　2005/07

    DOI： 10.2116/analsci.21.815 　

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Misc. 3

  1. Calibrating standards using chemical reagents for glass bead x-ray fluorescence analyses of geochemical samples Peer-reviewed

    Nakayama, Kenichi, Nakamura, Toshihiro

    X-RAY SPECTROMETRY　37　(3)　204-209　2008/05

    DOI： 10.1002/xrs.1042 　

  2. アスベストの分析―顕微鏡法と粉末Ｘ線回折法 Peer-reviewed

    中山健一, 中村利廣

    X線分析の進歩　40　87-100　2009

  3. 岩石粉末の性状とガラスビード / 蛍光Ｘ線分析 Peer-reviewed

    中山健一, 中村利廣

    X線分析の進歩　38　35-44　2007

Books and Other Publications 3

  1. Encyclopedia of Analytical Chemistry

    Kenichi Nakayama, Kazuaki Wagatsuma

    John Wiley & Sons, Ltd.　2017/12/15

  2. Treatise on Geochemistry Second Edition

    Kenichi Nakayama, Toshihiro Nakamura

    Elsevier Ltd.　2014

  3. 粉末Ｘ線解析の実際 第2版

    中山健一, 中村利廣

    朝倉書店　2009/07