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A Flow-tube Based Laser-induced Fluorescence Instrument to Measure Oh Reactivity in the Troposphere : Volume 2, Issue 2 (02/03/2009)

By Ingham, T.

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Book Id: WPLBN0003978230
Format Type: PDF Article :
File Size: Pages 37
Reproduction Date: 2015

Title: A Flow-tube Based Laser-induced Fluorescence Instrument to Measure Oh Reactivity in the Troposphere : Volume 2, Issue 2 (02/03/2009)  
Author: Ingham, T.
Volume: Vol. 2, Issue 2
Language: English
Subject: Science, Atmospheric, Measurement
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Historic
Publication Date:
2009
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

APA MLA Chicago

Edwards, P. M., Read, K. A., Ingham, T., Self, D. E., Furneaux, K. L., Goddard, A.,...Seal, C. P. (2009). A Flow-tube Based Laser-induced Fluorescence Instrument to Measure Oh Reactivity in the Troposphere : Volume 2, Issue 2 (02/03/2009). Retrieved from http://www.ebooklibrary.org/


Description
Description: School of Chemistry, University of Leeds, Leeds, LS2 9JT, UK. 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.

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

Excerpt
Atkinson, R.: Kinetics of the gas-phase reactions of OH radicals with alkanes and cycloalkanes, Atmos. Chem. Phys., 3, 2233–2307, 2003.; Bell, N., Heard, D. E., Pilling, M. J., and Tomlin, A. S.: Atmospheric lifetime as a probe of radical chemistry in the boundary layer, Atmos. Environ., 37, 2193–2205, 2003.; Bloss, W. J., Gravestock, T. J., Heard, D. E., Ingham, T., Johnson, G. P., and Lee, J. D.: Application of a compact all solid-state laser system to the in situ detection of atmospheric OH, HO2, NO and IO by laser-induced fluorescence, J. Environ. Monitor., 5, 21–28, 2003.; Calpini, B., Jeanneret, F., Bourqui, M., Clapier, A., Vajtai, R., and van der Bergh, H.: Direct measurement of the total reaction rate of OH in the atmosphere, Analysis, 27, 328–336, 1999.; Carslaw, N., Creasey, D. J., Heard, D. E., Lewis, A. C., McQuaid, J. B., Pilling, M. J., Monks, P. S., Bandy, B. J., and Penkett, S. A.: Modeling OH, HO2, and RO2 radicals in the marine boundary layer. 1. Model construction and comparison with field measurements, J. Geophys. Res., 104(D23), 30241–30255, 1999.; Curtis, A. R. and Sweetenham, W. P.: FACSIMILE release H, users manual AERA Report R12805 (HMSO), London, 1987.; Di Carlo, P., Brune, W. H., Martinez, M., Harder, H., Lesher, R., Ren, X. R., Thornberry, T., Carroll, M. A., Young, V., Shepson, P. B., Riemer, D., Apel, E., and Campbell, C.: Missing OH reactivity in a forest: Evidence for unknown reactive biogenic VOCs, Science, 304, 722–725, 2004.; Emmerson, K. M., Carslaw, N., Carslaw, D. C., Lee, J. D., McFiggans, G., Bloss, W. J., Gravestock, T., Heard, D. E., Hopkins, J., Ingham, T., Pilling, M. J., Smith, S. C., Jacob, M., and Monks, P. S.: Free radical modelling studies during the UK TORCH Campaign in Summer 2003, Atmos. Chem. Phys., 7, 167–181, 2007.; Heard, D. E. and Pilling, M. J.: Measurement of OH and HO2 in the troposphere, Chem. Rev., 103, 5163–5198, 2003.; Jenkin, M. E., Saunders, S. M., Wagner, V., and Pilling, M. J.: Protocol for the development of the Master Chemical Mechanism, MCM v3 (Part B): tropospheric degradation of aromatic volatile organic compounds, Atmos. Chem. Phys., 3, 181–193, 2003.; Johnson, G. P.: Measurements of Tropospheric Radical Concentrations by Laser Induced Fluorescence, Ph.D. thesis, University of Leeds, 2004.; Kovacs, T. A. and Brune, W. H.: Total OH Loss Rate Measurement, J. Atmos. Chem., 39, 105–122, 2001.; Kovacs, T. A., Brune, W. H., Harder, H., Martinez, M., Simpas, J. B., Frost, G. J., Williams, E., Jobson, T., Stroud, C., Young, V., Fried, A., and Wert, B.: Direct Measurements of Urban OH Reactivity during Nashville SOS in Summer 1999, J. Environ. Monitor., 5, 68–74, 2003.; Lee, J. D., Lewis, A. C., Monks, P. S., Jacob, M., Hamilton, J. F., Hopkins, J. R., Watson, N. M., Saxton, J. E., Ennis, C., Carpenter, L. J., Carslaw, N., Fleming, Z., Bandy, B. J., Oram, D. E., Penkett, S. A., Slemr, J., Norton, E., Rickard, A. R., Whalley, L. K., Heard, D. E., Bloss, W. J., Gravestock, T., Smith, S. C., Stanton, J., Pilling, M. J., and Jenkin, M. E.: Ozone photochemistry and elevated isoprene during the UK heatwave of August 2003, Atmos. Environ., 40, 39, 7598–7613, 2006.; Lee, J. D., Smith, S. C., Davey, J., et al.: Measurement of OH Reactivity in the TORCH-2 Campaign, Atmos. Chem. Phys., in preparation, 2009.; Lelieveld, J., Butler, T. M., Crowley, J. N., Dillon, T. J., Fischer, H., Ganzeveld, L., Harder, H., Lawrence, M. G., Martinez, M., Taraborrelli, D., and Williams, J.: Atmospheric oxidation capacity sustained by a tropical forest, Nature, 452, 737–740, 2008.; Lewis, A. C., Carslaw, N., Marriott, P. J., Kinghorn, R. M., Morrison, P., Lee, A. L., Bartle K. D., and Pilling M. J.: A larger pool of ozone-forming carbon compounds in urban atmospheres, Nature, 405, 778–781, 2000.; Lewis, A. C., Hopkins, J. R., Carpenter, L. J., Stanton, J., Read, K. A., and Pilling, M. J.: Sources an


 

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