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Development and evaluation of a sampling system to determine gaseous Mercury fluxes using an aerodynamic micrometeorological gradient method

Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.14/93362

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Title: Development and evaluation of a sampling system to determine gaseous Mercury fluxes using an aerodynamic micrometeorological gradient method
Related: Journal of geophysical research, Vol. 110, D10306 (2005),
DOI: 10.1029/2004JD005187
Publisher: American Geophysical Union
Date: 2005
Author/Creator: Edwards, G. C
Author/Creator: Rasmussen, P. E
Author/Creator: Schroeder, W. H
Author/Creator: Wallace, D. M
Author/Creator: Halfpenny-Mitchell, L
Author/Creator: Dias, G. M
Author/Creator: Kemp, R. J
Author/Creator: Ausma, S
Description: An aerodynamic gradient micrometeorological approach to the measurement of total gaseous mercury (TGM) flux has been developed. This method has been applied in many field studies for the characterization of TGM flux from various mercuriferous substrates. The resolution of the gradient method depends on the sampling systems characteristics and has been demonstrated to be on the order of 0.01 ± 0.01 ng Hg m⁻³ or better. The method is best suited to measuring high-emitting sites such as studied here. The TGM flux resolution is based on the gradient resolution and depends on the site characteristics and the atmospheric condition. For a typical friction velocity u * of 0.1 m s⁻¹ and gradient intake heights of 0.15 and 0.4 m the method can resolve a TGM flux on the order of 1.5 ng m⁻² h⁻¹. The system can be configured for two-level or multilevel sampling, as needed. The method compares well with other micrometeorological methods as demonstrated during the Nevada storms intercomparison study. The micrometeorological method is shown to compare well with chamber techniques under comparable conditions.
Description: 11 page(s)
Resource Type: journal article
Organisation: Macquarie University. Dept. of Environment and Geography

Identifier: http://hdl.handle.net/1959.14/93362
Identifier: ISSN:0148-0227
Identifier: mq-rm-2009010589
Language: eng
Rights: Copyright AGU [2005]. Originally published as Journal of Geophysical Research, Volume 10, D10306, 11 pages. Version archived for private and non-commercial use with the permission of the author/s and according to publisher conditions. For further rights please contact the publisher.
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