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Field Screening for Halogenated Volatile Organic Compounds.

DE2004820761

Publication Date	2003
Personal Author	Schabron, J. F.; Rovani, J. F.; Bomstad, T. M.
Page Count	36
Abstract	Western Research Institute (WRI) is continuing work toward the development of new screening methodology and a test kit to measure halogenated volatile organic compounds (VOCs) in the field. Heated diode and corona discharge sensors are commonly used to detect leaks of refrigerants from air conditioners, freezers, and refrigerators. They are both selective to the presence of halogens. In prior work, the devices were tested for response to carbon tetrachloride, heptane, toluene, and water vapors. In the current work, sensor response was evaluated with sixteen halogenated VOCs relative to carbon tetrachloride. The results show that the response of the various chlorinated VOCs is within an order of magnitude of the response to carbon tetrachloride for each of the sensors. Thus, for field screening a single response factor can be used. Both types of leak detectors are being further modified to provide an on-board LCD signal readout, which is related to VOC concentration. The units will be fully portable and will operate with 115-V line or battery power.
Keywords	Halogenated hydrocarbons Refrigerants Leak detectors Carbon tetrachloride Heptane Toluene Water vapor Volatile organic compounds
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	University of Wyoming Research Corp., Laramie. Western Research Inst.; Department of Energy, Washington, DC. Office of Fossil Energy.; National Energy Technology Lab., Morgantown, WV.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC. Office of Fossil Energy. and National Energy Technology Lab., Morgantown, WV.
Document Type	Technical Report
NTIS Issue Number	200414

Field Screening for Halogenated Volatile Organic Compounds.

Field Screening for Halogenated Volatile Organic Compounds.
DE2004820761

Publication Date	2003
Personal Author	Schabron, J. F.; Rovani, J. F.; Bomstad, T. M.
Page Count	36
Abstract	Western Research Institute (WRI) is continuing work toward the development of new screening methodology and a test kit to measure halogenated volatile organic compounds (VOCs) in the field. Heated diode and corona discharge sensors are commonly used to detect leaks of refrigerants from air conditioners, freezers, and refrigerators. They are both selective to the presence of halogens. In prior work, the devices were tested for response to carbon tetrachloride, heptane, toluene, and water vapors. In the current work, sensor response was evaluated with sixteen halogenated VOCs relative to carbon tetrachloride. The results show that the response of the various chlorinated VOCs is within an order of magnitude of the response to carbon tetrachloride for each of the sensors. Thus, for field screening a single response factor can be used. Both types of leak detectors are being further modified to provide an on-board LCD signal readout, which is related to VOC concentration. The units will be fully portable and will operate with 115-V line or battery power.
Keywords	Halogenated hydrocarbons Refrigerants Leak detectors Carbon tetrachloride Heptane Toluene Water vapor Volatile organic compounds
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	University of Wyoming Research Corp., Laramie. Western Research Inst.; Department of Energy, Washington, DC. Office of Fossil Energy.; National Energy Technology Lab., Morgantown, WV.
Supplemental Notes	Sponsored by Department of Energy, Washington, DC. Office of Fossil Energy. and National Energy Technology Lab., Morgantown, WV.
Document Type	Technical Report
NTIS Issue Number	200414