A flow-tube based laser-induced fluorescence instrument to measure OH reactivity in the troposphere

T. Ingham; A. Goddard; L. K. Whalley; K. L. Furneaux; P. M. Edwards; C. P. Seal; D. E. Self; G. P. Johnson; K. A. Read; J. D. Lee; D. E. Heard

doi:10.5194/amt-2-465-2009

A flow-tube based laser-induced fluorescence instrument to measure OH reactivity in the troposphere

T. Ingham, A. Goddard, L. K. Whalley, K. L. Furneaux, P. M. Edwards, C. P. Seal, D. E. Self, G. P. Johnson, K. A. Read, J. D. Lee, D. E. Heard

Chemistry

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

Abstract

A field instrument utilising the artificial generation of OH radicals in a sliding injector flow-tube reactor with detection by laser-induced fluorescence spectroscopy has been developed to measure the rate of decay of OH by reaction with its atmospheric sinks. The OH reactivity instrument has been calibrated using known concentrations of CO, NO2 and single hydrocarbons in a flow of zero air, and the impact of recycling of OH via the reaction HO2+ NO -> OH+NO2 on the measured OH reactivity has been quantified. As well as a detailed description of the apparatus, the capabilities of the new instrument are illustrated using representative results from deployment in the semi-polluted marine boundary layer at the Weybourne Atmospheric Observatory, UK, and in a tropical rainforest at the Bukit Atur Global Atmospheric Watch station, Danum Valley, Borneo.

Original language	English
Pages (from-to)	465-477
Number of pages	13
Journal	Atmospheric Measurement Techniques
Volume	2
Issue number	2
DOIs	https://doi.org/10.5194/amt-2-465-2009
Publication status	Published - 2009

Keywords

VOLATILE ORGANIC-COMPOUNDS
MASTER CHEMICAL MECHANISM
MCM V3 PART
ATMOSPHERIC OXIDATION
RADICAL CHEMISTRY
URBAN ATMOSPHERE
PROBE TECHNIQUE
BOUNDARY-LAYER
INDUCED PUMP
SUMMER 1999

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10.5194/amt-2-465-2009

Cite this

@article{3ab8d6757bfe412582e0ae87031c5d0d,

title = "A flow-tube based laser-induced fluorescence instrument to measure OH reactivity in the troposphere",

abstract = "A field instrument utilising the artificial generation of OH radicals in a sliding injector flow-tube reactor with detection by laser-induced fluorescence spectroscopy has been developed to measure the rate of decay of OH by reaction with its atmospheric sinks. The OH reactivity instrument has been calibrated using known concentrations of CO, NO2 and single hydrocarbons in a flow of zero air, and the impact of recycling of OH via the reaction HO2+ NO -> OH+NO2 on the measured OH reactivity has been quantified. As well as a detailed description of the apparatus, the capabilities of the new instrument are illustrated using representative results from deployment in the semi-polluted marine boundary layer at the Weybourne Atmospheric Observatory, UK, and in a tropical rainforest at the Bukit Atur Global Atmospheric Watch station, Danum Valley, Borneo.",

keywords = "VOLATILE ORGANIC-COMPOUNDS, MASTER CHEMICAL MECHANISM, MCM V3 PART, ATMOSPHERIC OXIDATION, RADICAL CHEMISTRY, URBAN ATMOSPHERE, PROBE TECHNIQUE, BOUNDARY-LAYER, INDUCED PUMP, SUMMER 1999",

author = "T. Ingham and A. Goddard and Whalley, {L. K.} and Furneaux, {K. L.} and Edwards, {P. M.} and Seal, {C. P.} and Self, {D. E.} and Johnson, {G. P.} and Read, {K. A.} and Lee, {J. D.} and Heard, {D. E.}",

year = "2009",

doi = "10.5194/amt-2-465-2009",

language = "English",

volume = "2",

pages = "465--477",

journal = "Atmospheric Measurement Techniques",

issn = "1867-1381",

publisher = "Copernicus Gesellschaft mbH",

number = "2",

}

TY - JOUR

T1 - A flow-tube based laser-induced fluorescence instrument to measure OH reactivity in the troposphere

AU - Ingham, T.

AU - Goddard, A.

AU - Whalley, L. K.

AU - Furneaux, K. L.

AU - Edwards, P. M.

AU - Seal, C. P.

AU - Self, D. E.

AU - Johnson, G. P.

AU - Read, K. A.

AU - Lee, J. D.

AU - Heard, D. E.

PY - 2009

Y1 - 2009

N2 - A field instrument utilising the artificial generation of OH radicals in a sliding injector flow-tube reactor with detection by laser-induced fluorescence spectroscopy has been developed to measure the rate of decay of OH by reaction with its atmospheric sinks. The OH reactivity instrument has been calibrated using known concentrations of CO, NO2 and single hydrocarbons in a flow of zero air, and the impact of recycling of OH via the reaction HO2+ NO -> OH+NO2 on the measured OH reactivity has been quantified. As well as a detailed description of the apparatus, the capabilities of the new instrument are illustrated using representative results from deployment in the semi-polluted marine boundary layer at the Weybourne Atmospheric Observatory, UK, and in a tropical rainforest at the Bukit Atur Global Atmospheric Watch station, Danum Valley, Borneo.

AB - A field instrument utilising the artificial generation of OH radicals in a sliding injector flow-tube reactor with detection by laser-induced fluorescence spectroscopy has been developed to measure the rate of decay of OH by reaction with its atmospheric sinks. The OH reactivity instrument has been calibrated using known concentrations of CO, NO2 and single hydrocarbons in a flow of zero air, and the impact of recycling of OH via the reaction HO2+ NO -> OH+NO2 on the measured OH reactivity has been quantified. As well as a detailed description of the apparatus, the capabilities of the new instrument are illustrated using representative results from deployment in the semi-polluted marine boundary layer at the Weybourne Atmospheric Observatory, UK, and in a tropical rainforest at the Bukit Atur Global Atmospheric Watch station, Danum Valley, Borneo.

KW - VOLATILE ORGANIC-COMPOUNDS

KW - MASTER CHEMICAL MECHANISM

KW - MCM V3 PART

KW - ATMOSPHERIC OXIDATION

KW - RADICAL CHEMISTRY

KW - URBAN ATMOSPHERE

KW - PROBE TECHNIQUE

KW - BOUNDARY-LAYER

KW - INDUCED PUMP

KW - SUMMER 1999

U2 - 10.5194/amt-2-465-2009

DO - 10.5194/amt-2-465-2009

M3 - Article

SN - 1867-1381

VL - 2

SP - 465

EP - 477

JO - Atmospheric Measurement Techniques

JF - Atmospheric Measurement Techniques

IS - 2

ER -