MONITORING OF ATMOSPHERIC CONCENTRATION OF CHLORODIFLUOROMETHANE (HCFC-22) BY AUTOMATED GC O-2-DOPED-ECD/

Authors
TOYODA S TOMINAGA T MAKIDE Y
Citation
S. Toyoda et al., MONITORING OF ATMOSPHERIC CONCENTRATION OF CHLORODIFLUOROMETHANE (HCFC-22) BY AUTOMATED GC O-2-DOPED-ECD/, Chemistry Letters, (1), 1997, pp. 95-96
Citations number
7
Categorie Soggetti
Chemistry
Journal title
Chemistry Letters → ACNP
ISSN journal
03667022
Issue
1
Year of publication
1997
Pages
95 - 96
Database
ISI
SICI code
0366-7022(1997):1<95:MOACOC>2.0.ZU;2-#
Abstract
An automated gas chromatograph/electron capture detector (GC/ECD) syst em 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 a voided the use of cryogen and dryer for preconcentration or sample dry ing. Oxygen was doped into the N-2 Carrier gas to sensitize the ECD. S erial measurements of atmospheric HCFC-22 concentration were attempted in the central area of Tokyo.