THE TDLAS INSTRUMENT FOR THE DETECTION OF TOTAL INORGANIC CHLORINE INTHE STRATOSPHERE

Authors
JOHNSON TJ HARRIS GW BONIFER J CROWLEY JN ZENKER T FISCHER H
Citation
Tj. Johnson et al., THE TDLAS INSTRUMENT FOR THE DETECTION OF TOTAL INORGANIC CHLORINE INTHE STRATOSPHERE, Geophysical research letters, 23(24), 1996, pp. 3611-3614
Citations number
28
Categorie Soggetti
Geosciences, Interdisciplinary
Journal title
Geophysical research letters → ACNP
ISSN journal
00948276
Volume
23
Issue
24
Year of publication
1996
Pages
3611 - 3614
Database
ISI
SICI code
0094-8276(1996)23:24<3611:TTIFTD>2.0.ZU;2-F
Abstract
A novel method based on tunable diode laser absorption spectroscopy is proposed for the detection of the sum of the stratospheric chlorine c omponents HCl, ClONO2, ClOOCl and ClO. All of the above species are de tected as HCl following thermal decomposition (ClONO2 and ClOOCl) to C lO which is converted to Cl via reaction with NO; the Cl atom is then rapidly reacted with a hydrocarbon to form HCl. The method has been in vestigated in the laboratory for detection of ClONO2, for which the co nversion efficiency was found to be 100% under suitable conditions.