Environmental Monitoring Method of Di-, Tri-, Tetra-, Penta-, and Hexa-Chlorinated Biphenyls in the Gas Phase by Use of the Picosecond Laser Ionization
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概要
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Utilization of the picosecond (100 ps) laser ionization was successful in measuring the mass spectra attributed to di-, tri-, tetra-, penta-, and hexa-chlorinated biphenyls. It was confirmed that the quantitative limit of this method in real-time (1 min) was 10 μg/m3N (equivalent to 1/10 of the value established as the statutory limit for PCBs in the ambient air of the workplace environment). Further evaluations of measurement accuracy based on comparisons with the results of the conventional method (gas sampling and GC-MS) demonstrated a coefficient of variation within 30%. We undertook the measurement of the exhaust gas and the work environment atmosphere in PCBs treatment plants using the LI-IT-TOFMS method, confirming that the monitoring system could be operated appropriately by the introduction of an internal standard gas (2,4-dichlorinated toluene), and that it was possible to make continuous long-term measurements for over 500 h (total measurement time, >6000 h).
- 社団法人 化学工学会の論文
- 2007-02-01
著者
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DOBASHI Shinsaku
Nagasaki R&D Center, Mitsubishi Heavy Industries Ltd.
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YAMAGUCHI Yoshiki
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
Molecular Photoscience Research Center, Kobe University
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HARA Michikazu
Material and Structures Laboratory, Tokyo Institute of Technology
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Hara Michikazu
Material And Structures Lab. Tokyo Inst. Of Technol.
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Hara Michikazu
Chemical Resources Laboratory Tokyo Institute Of Technology
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Wada Akihide
Molecular Photoscience Res. Center Kobe Univ.
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土橋 晋作
三菱重工業(株)長崎研究所
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Dobashi Shinsaku
Nagasaki R&d Center Mitsubishi Heavy Industries Ltd.
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Dobashi Shinsaku
Nagasaki Research And Development Center Mitsubishi Heavy Industries Ltd.
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土橋 晋作
東京工業大学資源化学研究所
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DEGUCHI Yoshihiro
Nagasaki R&D Center, Mitsubishi Heavy Industries Ltd.
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Yamaguchi Yoshiki
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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Deguchi Yoshihiro
Nagasaki R&d Center Mitsubishi Heavy Industries Ltd.
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