Measurement of tropospheric OH and HO2 by laser-induced fluorescence at low pressure

P. S. Stevens; J. H. Mather; W. H. Brune

doi:10.1029/93JD03342

Measurement of tropospheric OH and HO₂ by laser-induced fluorescence at low pressure

P. S. Stevens, J. H. Mather, W. H. Brune

Meteorology and Atmospheric Science

Research output: Contribution to journal › Article › peer-review

124 Scopus citations

Abstract

This paper describes an instrument for the sensitive detection of OH in the troposphere using low-pressure laser-induced fluorescence. Ambient air is expanded into a low-pressure detection chamber, and OH is both excited and detected using the A³Σ⁺(v″ = 0) → X²II(v" = 0) transition near 308 nm. An injector upstream of the detection axis allows for the addition of reagent NO to convert ambient HO₂ to OH using the fast reaction HO₂ + NO → OH + NO₂. Using recent advances in laser and detector technologies, this prototype instrument is able to detect less than 1 × 10⁵ molecules cm^-3 (0.004 pptv) of OH with an integration time of 30 s with negligible interferences. -from Authors

Original language	English (US)
Pages (from-to)	3543-3557
Number of pages	15
Journal	Journal of Geophysical Research
Volume	99
Issue number	D2
DOIs	https://doi.org/10.1029/93JD03342
State	Published - 1994

All Science Journal Classification (ASJC) codes

Geophysics
Forestry
Oceanography
Aquatic Science
Ecology
Water Science and Technology
Soil Science
Geochemistry and Petrology
Earth-Surface Processes
Atmospheric Science
Earth and Planetary Sciences (miscellaneous)
Space and Planetary Science
Palaeontology

Access to Document

10.1029/93JD03342

Cite this

@article{e428138093bd4f0bb402c189e75d5806,

title = "Measurement of tropospheric OH and HO2 by laser-induced fluorescence at low pressure",

abstract = "This paper describes an instrument for the sensitive detection of OH in the troposphere using low-pressure laser-induced fluorescence. Ambient air is expanded into a low-pressure detection chamber, and OH is both excited and detected using the A3Σ+(v″ = 0) → X2II(v{"} = 0) transition near 308 nm. An injector upstream of the detection axis allows for the addition of reagent NO to convert ambient HO2 to OH using the fast reaction HO2 + NO → OH + NO2. Using recent advances in laser and detector technologies, this prototype instrument is able to detect less than 1 × 105 molecules cm-3 (0.004 pptv) of OH with an integration time of 30 s with negligible interferences. -from Authors",

author = "Stevens, \{P. S.\} and Mather, \{J. H.\} and Brune, \{W. H.\}",

year = "1994",

doi = "10.1029/93JD03342",

language = "English (US)",

volume = "99",

pages = "3543--3557",

journal = "Journal of Geophysical Research",

issn = "0148-0227",

publisher = "Wiley-Blackwell",

number = "D2",

}

TY - JOUR

T1 - Measurement of tropospheric OH and HO2 by laser-induced fluorescence at low pressure

AU - Stevens, P. S.

AU - Mather, J. H.

AU - Brune, W. H.

PY - 1994

Y1 - 1994

N2 - This paper describes an instrument for the sensitive detection of OH in the troposphere using low-pressure laser-induced fluorescence. Ambient air is expanded into a low-pressure detection chamber, and OH is both excited and detected using the A3Σ+(v″ = 0) → X2II(v" = 0) transition near 308 nm. An injector upstream of the detection axis allows for the addition of reagent NO to convert ambient HO2 to OH using the fast reaction HO2 + NO → OH + NO2. Using recent advances in laser and detector technologies, this prototype instrument is able to detect less than 1 × 105 molecules cm-3 (0.004 pptv) of OH with an integration time of 30 s with negligible interferences. -from Authors

AB - This paper describes an instrument for the sensitive detection of OH in the troposphere using low-pressure laser-induced fluorescence. Ambient air is expanded into a low-pressure detection chamber, and OH is both excited and detected using the A3Σ+(v″ = 0) → X2II(v" = 0) transition near 308 nm. An injector upstream of the detection axis allows for the addition of reagent NO to convert ambient HO2 to OH using the fast reaction HO2 + NO → OH + NO2. Using recent advances in laser and detector technologies, this prototype instrument is able to detect less than 1 × 105 molecules cm-3 (0.004 pptv) of OH with an integration time of 30 s with negligible interferences. -from Authors

UR - http://www.scopus.com/inward/record.url?scp=0028192221&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0028192221&partnerID=8YFLogxK

U2 - 10.1029/93JD03342

DO - 10.1029/93JD03342

M3 - Article

AN - SCOPUS:0028192221

SN - 0148-0227

VL - 99

SP - 3543

EP - 3557

JO - Journal of Geophysical Research

JF - Journal of Geophysical Research

IS - D2

ER -

Measurement of tropospheric OH and HO₂ by laser-induced fluorescence at low pressure

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this