血液中PCB異性体分離分析におけるアルカリ分解温度の検討

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  • Examination of Alkali Digestion Temperature in Isomer Specific Analysis of PCB in Whole Blood Sample
  • ケツエキ チュウ PCB イセイタイ ブンリ ブンセキ ニ オケル アルカリ ブンカイ オンド ノ ケントウ

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We compared concentrations of PCB congeners between conventional 80℃ alkali digestion method and 30℃ alkali digestion method using 22 individual blood samples collected during 2009 annual Yusho examinations. The mean concentration of tri-CB in 30℃ alkali digestion method was lower than that of conventional method. However, concentration of total PCBs, 2,3',4,4',5-pentaCB (PCB118), 2,2',4,4',5,5'-hexaCB (PCB153) and 2,3,3',4,4',5-hexaCB (PCB156), which were used as index for Yusho diagnosis, were equivalent between the methods. It was considered that the 30℃ alkali digestion method was available for blood PCB congener specific analysis in Yusho diagnosis.

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