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
-
- DOBASHI Shinsaku
- Nagasaki R&D Center, Mitsubishi Heavy Industries Ltd.
-
- KIRA Masaharu
- Machinery Headquarters, Mitsubishi Heavy Industries Ltd.
-
- TANAKA Ryuichiro
- Nagasaki Shipyard & Machinery Works, Mitsubishi Heavy Industries Ltd.
-
- IZAWA Yoshinori
- Nagasaki Shipyard & Machinery Works, Mitsubishi Heavy Industries Ltd.
-
- WADA Akihide
- Chemical Resources Laboratory, Tokyo Institute of Technology
-
- HARA Michikazu
- Chemical Resources Laboratory, Tokyo Institute of Technology
Search this article
Abstract
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.
Journal
-
- Analytical Sciences
-
Analytical Sciences 22 (4), 603-606, 2006
The Japan Society for Analytical Chemistry
- Tweet
Keywords
Details 詳細情報について
-
- CRID
- 1390282679232188032
-
- NII Article ID
- 10018124020
-
- NII Book ID
- AA10500785
-
- ISSN
- 13482246
- 09106340
-
- NDL BIB ID
- 7872062
-
- Text Lang
- en
-
- Data Source
-
- JaLC
- NDL
- Crossref
- CiNii Articles
-
- Abstract License Flag
- Disallowed