Title :
Absorption spectra of hydrogen chloride and carbon monoxide in smoke
Author :
Shimizu, Naofumi ; Matsuyama, Ken ; Hosako, Iwao
Author_Institution :
NTT Microsyst. Integration Labs., Nippon Telegraph & Telephone Corp., Atsugi, Japan
Abstract :
Absorption spectra of smoke produced from polyvinyl chloride (PVC) and molded charcoal at high temperature are investigated between 500 and 950 GHz. Observed peaks at 626 GHz for PVC and at 692 and 921 GHz for molded charcoal are respectively assigned as the spectral signature of hydrogen chloride and carbon monoxide contained in smoke. Smoke from molded charcoal also showed absorption peaks of hydrogen cyanide that are likely produced by the combustion of adhesive matter in it. These results show the potential of sub-terahertz spectroscopic sensing for instantaneous detection and quantification of multiple harmful gaseous substances in smoke.
Keywords :
air pollution measurement; atmospheric techniques; carbon compounds; combustion; hydrogen compounds; smoke; spectrochemical analysis; terahertz wave spectra; CO; HCN; HCl; adhesive matter combustion; carbon monoxide spectral signature; frequency 500 GHz to 950 GHz; harmful gaseous substances; hydrogen chloride spectral signature; hydrogen cyanide absorption peaks; instantaneous gas detection; instantaneous gas quantification; molded charcoal; polyvinyl chloride; smoke absorption spectra; smoke carbon monoxide content; smoke hydrogen chloride content; subterahertz spectroscopic sensing; Absorption; Carbon; Combustion; Frequency measurement; Heating; Hydrogen; Temperature measurement;
Conference_Titel :
Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), 2012 37th International Conference on
Conference_Location :
Wollongong, NSW
Print_ISBN :
978-1-4673-1598-2
Electronic_ISBN :
2162-2027
DOI :
10.1109/IRMMW-THz.2012.6380330
