Monitoring of Atmospheric Concentration of Chlorodifluoromethane (HCFC-22) by Automated GC/O2-doped-ECD

An automated gas chromatograph/electron capture detector (GC/ECD) system was developed to monitor the concentration of HCFC-22 in the urban atmosphere at intervals of 90 min. By using two columns in series we avoided the use of cryogen and dryer for preconcentration or sample drying. Oxygen was dope...

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Published in:Chemistry letters 1997-01, Vol.26 (1), p.95-96
Main Authors: Toyoda, Sakae, Tominaga, Takeshi, Makide, Yoshihiro
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Tominaga, Takeshi
Makide, Yoshihiro
description An automated gas chromatograph/electron capture detector (GC/ECD) system was developed to monitor the concentration of HCFC-22 in the urban atmosphere at intervals of 90 min. By using two columns in series we avoided the use of cryogen and dryer for preconcentration or sample drying. Oxygen was doped into the N2 carrier gas to sensitize the ECD. Serial measurements of atmospheric HCFC-22 concentration were attempted in the central area of Tokyo.
doi_str_mv 10.1246/cl.1997.95
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title Monitoring of Atmospheric Concentration of Chlorodifluoromethane (HCFC-22) by Automated GC/O2-doped-ECD
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