Applicability of a Monitoring Method for Methane in the Ambient Air at Landfill Sites Using a Portable Open-path Analyzer

DOI Web Site 2 Citations 16 References
  • Tanikawa Noboru
    Laboratory of Sound Material-Cycle Systems Planning, Graduate School of Engineering, Hokkaido University
  • Furuichi Toru
    Laboratory of Sound Material-Cycle Systems Planning, Graduate School of Engineering, Hokkaido University
  • Ishii Kazuei
    Laboratory of Sound Material-Cycle Systems Planning, Graduate School of Engineering, Hokkaido University
  • Matsuo Koji
    Laboratory of Sound Material-Cycle Systems Planning, Graduate School of Engineering, Hokkaido University
  • Iseki Takaya
    Technology Development Dept., Tokyo Gas Co., Ltd.

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Other Title
  • ハンディタイプオープンパス型計測器による大気環境中メタン計測手法の廃棄物最終処分場への適用
  • ハンディタイプオープンパスガタ ケイソクキ ニ ヨル タイキ カンキョウ チュウ メタン ケイソク シュホウ ノ ハイキブツ サイシュウ ショブンジョウ エ ノ テキヨウ

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Abstract

We have proposed a convenient monitoring method for CH4 concentration in ambient air at landfill sites and investigated its reliability and utility. A portable open-path analyzer (POMA), which is sold as a city gas leak tester, was used together with a retroreflector.<BR>A strong correlation was found between the CH4 concentrations measured using the POMA and those indicated using a flame ionization detector hydrocarbon analyzer (FID) . The values of CH4 obtained from the POMA are not dependent on the distance between the instrument and the retroreflector and show good repetition of results. The reliability of the proposed monitoring method is similar to that provided by the FID. The proposed method is a convenient and practical means of monitoring the change of average CH4 concentration in ambient landfill site air. Using it, we determined the influence of landfill gas on working conditions, in addition to the degree of landfill stabilization.

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