シアン化水素センサーを用いる簡易測定システムの作製と血液試料分析への応用(<特集>医療と分析化学)

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書誌事項

タイトル別名
  • Analytical Chemistry in Medical Science and Technology. Preparation of a simple system for the analysis of cyanide using a hydrocyanide gas sensor and application to the analysis of blood samples.
  • 医療と分析化学　　シアン化水素センサーを用いる簡易測定システムの作製と血液試料分析への応用
  • シアンカスイソ センサー オ モチイル カンイ ソクテイ システム ノ サクセ

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抄録

A simple system for the potentiometric measurement of cyanide in blood samples has been developed for forensic poisoning in fire accidents based on a HCN gas sensor with a gaspermeable PTFE diaphragm. HCN gas produced from a sample (1 ml) containing cyanide was measured by adding 1 ml of 50% phosphoric acid in a 25 ml sealed Teflon vessel. Although the presence of sulfide in the sample interfered significantly with the measurements, no influence was observed by CO in the present system. The analytical results for blood samples obtained by the present measuring system were in excellent agreement (r=0.998) with those obtained by gas chromatography, which has been the conventional method used so far. The proposed method is very much advantageous and useful for rapid field analyses of cyanide in blood samples, for example to clarify the cause of death at the location of a fire due to the following reasons. No contamination by the blood sample takes place, because the sensor is placed in the gas phase and the blood sample does not touch the sensor at all; thus, many repetitive measurements are possible with high reliability and reproducibility; the system is simple enough to be portable to any place; it is safe in operation for measurement, it provides a rapid analysis etc.

収録刊行物

  • 分析化学

    分析化学 46 (12), 971-977, 1997

    公益社団法人 日本分析化学会

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