質量分析法による貝紫色素の簡便,迅速な判別法  [in Japanese] A convenient and rapid detection method of Kaimurasaki coloring matter by MS.  [in Japanese]

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Abstract

イオン源への直接導入法を用いた電子イオン化質量分析法により貝紫色素の検出を試みた.アカニシ貝から得られる貝紫の色素を含む試料は,粗製のものでもジブロモインジゴとその前駆体とされる6-ブロモ-2-メチルチオインドレニノンの親ピーク,及び<I>m</I>/<I>z</I>404,406,408(1:2:1),386などの特性ピークを与えた.この手法を実際に染織した布地約2mm<SUP>2</SUP>ら色素を検出するのに適用したところ,複雑でない質量スペクトルから,貝紫成分として判定できることが分かった.

Mass spectrometry has been applied to the analysis of Kaimurasaki (Tyrian purple), a coloring material of archaeological importance. Kaimurasaki coloring matter was obtained from the hypobrachial glands of Akanishi-gai (<I>Rapana venosa Valencinnes</I>) and mixed with 5% salt water at 5°C. The salt water-based sample was directly introduced to the electron ionization source and was heated rapidly. The resulting total ionization current was monitored while adjusting the ionization current from 70 eV to 15 eV. Mass spectra thus obtained at ca. 250°C gave parent peaks of dibromoindigotin (<I>m</I>/<I>z</I> 418, 420, 422), fragment ions of the precursor, 6-bromo-2-methylthioindoleninone and another dibromo compound of ions <I>m</I>/<I>z</I> 404, 406, 408. The solid coloring matter after removal from salt water and washing with pure water was analyzed well, too. This method was found to be applicable to the detection of the coloring matter in dyed cloth.

Journal

  • Bunseki kagaku

    Bunseki kagaku 43(12), 1133-1136, 1994-12-05

    The Japan Society for Analytical Chemistry

References:  9

Codes

  • NII Article ID (NAID)
    110002906705
  • NII NACSIS-CAT ID (NCID)
    AN00222633
  • Text Lang
    JPN
  • Article Type
    ART
  • ISSN
    05251931
  • NDL Article ID
    3906815
  • NDL Source Classification
    PA87(染料・顔料・塗料)
  • NDL Source Classification
    ZP4(科学技術--化学・化学工業--分析化学)
  • NDL Call No.
    Z17-9
  • Data Source
    CJP  NDL  NII-ELS  J-STAGE  NDL-Digital 
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