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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Bibliographic Details
Published in:Chemistry letters 1997-01, Vol.26 (1), p.95-96
Main Authors: Toyoda, Sakae, Tominaga, Takeshi, Makide, Yoshihiro
Format: Article
Language:English
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Summary: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.
ISSN:0366-7022
1348-0715
DOI:10.1246/cl.1997.95