Characterization and monitoring of total organic chloride vapors [electronic resource].
- Washington, D.C. : United States. Dept. of Energy, 1992. and Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
- Physical Description:
- 8 pages : digital, PDF file
- Additional Creators:
- Pacific Northwest Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
- Restrictions on Access:
- Free-to-read Unrestricted online access
- Chemical sensors are being developed intermediate highly selective and broadly selective methods. PNL is developing an optical-emission based TOCl (total organic chlorinated compounds) sensor (Halosnif) which is capable of measuring TOCl in real time on an extracted gas sample over a wide linear dynamic range. Halosnif employs an atomic emission sensor that is broadly selective for any moderately volatile organic hclorinated vapor but does not distinguish between classes of chlorinated compounds. A rf-induced He plasma is used to excite the chlorine atoms, causing light emission at 837.6 nm. The sensitivity ranges from 1-2 ppM up to at least 10,000 ppM. Field tests were conducted at Tinker AFB in areas of high TCE contamination, in two boreholes at Savannah River, and at Hanford CCl₄ vapor extraction system. This sensor is briefly compared with acoustic wave sensors being developed by SNL (PAWS). 4 figs. (DLC)
- Published through SciTech Connect., 07/01/1992., "pnl-sa--21138", " conf-920791--7", "DE92019349", Information exchange meeting on characterization sensors and monitoring technologies,Dallas, TX (United States),15-16 Jul 1992., and Evans, J.C. Jr.; Olsen, K.B.; Anheier, N.C. Jr.
- Funding Information:
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