Determination of Ethanol in Coagulated Blood by Pyrolysis-Gas Chromatography/Mass Spectrometry

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  • Yamamoto Shouichi
    Forensic Science Laboratory, Wakayama Prefectural Police H.Q.
  • Ueda Keita
    Forensic Science Laboratory, Wakayama Prefectural Police H.Q.
  • Noami Masaaki
    Forensic Science Laboratory, Wakayama Prefectural Police H.Q.
  • Nokami Yasuo
    Forensic Science Laboratory, Wakayama Prefectural Police H.Q.

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Other Title
  • 熱分解ＧＣ‐ＭＳによる凝固血液中エタノール濃度の測定
  • 技術報告 熱分解GC/MSによる凝固血液中エタノール濃度の測定
  • ギジュツ ホウコク ネツ ブンカイ GC MS ニ ヨル ギョウコ ケツエキ チュウ エタノール ノウド ノ ソクテイ

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Abstract

  Ethanol concentrations in the coagulated blood of a bovine, a rabbit and a human were measured by using PY-GC/MS attached with a double-shot pyrolyzer (Model PY-2010D, Frontier Laboratories Ltd., Japan). Pyrolysis of samples was performed at 260°C, and the vapor evaporated from the sample was introduced into the GC/MS directly. For the control experiments, the concentrations of ethanol in both the heparinized bovine and rabbit blood, and homogenized human coagulated blood were measured by headspace-GC.<br>   The values of ethanol in the coagulated blood of the bovine, the rabbit and the human obtained by PY-GC/MS analysis were almost equal to that of the control experiments. These results indicated that the method using PY-GC/MS could be useful to the ethanol analysis of the coagulated blood in a practical case. In addition, the overall analytical time was about 10 minutes and the sample volume necessary for analysis was only 1 mg.<br>

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