Real-Time Measurements of Polychlorinated Biphenyls Using Laser Ionization Time-of-Flight Mass Spectrometry
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- DOBASHI Shinsaku
- Nagasaki Research and Development Center, Mitsubishi Heavy Industries Ltd.
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- DEGUCHI Yoshihiro
- Nagasaki Research and Development Center, Mitsubishi Heavy Industries Ltd.
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- KUBOTA Takahiro
- Nagasaki Research and Development Center, Mitsubishi Heavy Industries Ltd.
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- SHINODA Katsuhiko
- Nagasaki Research and Development Center, Mitsubishi Heavy Industries Ltd.
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Abstract
Polychlorinated biphenyls (PCBs) are hazardous compounds for which there are few methods involving real-time measurement. Recently, the development of the pulsed-laser technique has enabled us to measure aromatic hydrocarbons quite rapidly. In particular, the LI-TOFMS (laser ionization time of flight mass spectrometry) technique is expected to be a powerful method for on-line, selective and sensitive measurements. In the context of developing a highly selective and sensitive technique, the effective laser wavelength and pulse duration for laser ionization of 2 - 4 chlorinated PCBs are considered. Excitation at λ = 266 nm was found to be substantially more effective than at λ = 280, 300 or 320 nm. Also, picosecond excitation for PCBs underwent more efficient ionization (by a factor of over 10) and less fragmentation than nanosecond excitation. The achievable sensitivity for trichlorinated biphenyl in a real-time (1 min) measurement using the LI-TOFMS technique was estimated to be in the sub-ppbV range (< 0.01 mg/Nm3).
Journal
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- Analytical Sciences
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Analytical Sciences 20 (1), 13-18, 2004
The Japan Society for Analytical Chemistry
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Keywords
Details 詳細情報について
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- CRID
- 1390001204257161472
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- NII Article ID
- 130004440817
- 10011942035
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- NII Book ID
- AA10500785
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- COI
- 1:CAS:528:DC%2BD2cXmvFSqug%3D%3D
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- ISSN
- 13482246
- 09106340
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- NDL BIB ID
- 6809989
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- PubMed
- 14753252
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
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- Abstract License Flag
- Disallowed