Real-time Monitoring of Monochlorinated Benzene and Polychlorinated Biphenyls in the Gas Phase with On-line Detection: High Chemical Selectivity of Resonance-Enhanced Two-Photon Ionization
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- DOBASHI Shinsaku
- Nagasaki R&D Center, Mitsubishi Heavy Industries Ltd.
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- KIRA Masaharu
- Machinery Headquarters, Mitsubishi Heavy Industries Ltd.
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- TANAKA Ryuichiro
- Nagasaki Shipyard & Machinery Works, Mitsubishi Heavy Industries Ltd.
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- IZAWA Yoshinori
- Nagasaki Shipyard & Machinery Works, Mitsubishi Heavy Industries Ltd.
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- WADA Akihide
- Chemical Resources Laboratory, Tokyo Institute of Technology
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- HARA Michikazu
- Chemical Resources Laboratory, Tokyo Institute of Technology
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The development of molecular spectroscopy has enabled us to select chlorinated aromatic hydrocarbons very rapidly. In particular, the laser ionization TOFMS (time-of-flight mass spectrometry) method is expected to be useful as an on-line, selective, and sensitive method. In the present work, real-time laser ionization TOFMS measurements were carried out on gaseous chlorinated aromatic hydrocarbons. The laser ionization method used resonance-enhanced two-photon ionization with the direct introduction of gas into the vacuum chamber. This method for analyzing aromatic hydrocarbons was developed using a pulsed supersonic molecular beam method. In the context of developing a highly selective and sensitive method, excitation of monochlorinated benzene at λ = 263.07 nm was found to be effective in the wavelength region from 263 nm to 265 nm. Also the excitation of polychlorinated biphenyls at λ = 266 nm was found to be substantially more effective than at λ = 280, 300 or 320 nm. The achievable sensitivity for real-time (1 min) measurements using the laser ionization TOFMS technique was found to be in the ppbV range.
収録刊行物
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- Analytical Sciences
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Analytical Sciences 22 (4), 603-606, 2006
社団法人 日本分析化学会
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詳細情報
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- CRID
- 1390282679232188032
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- NII論文ID
- 10018124020
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- NII書誌ID
- AA10500785
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- ISSN
- 13482246
- 09106340
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- NDL書誌ID
- 7872062
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
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- 使用不可