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Titolo:
Application of a laboratory gas exchange chamber for assessment of in situmercury emissions
Autore:
Gustin, MS; Rasmussen, P; Edwards, G; Schroeder, W; Kemp, J;
Indirizzi:
Univ Nevada, Dept Environm & Resource Sci, Reno, NV 89557 USA Univ NevadaReno NV USA 89557 Environm & Resource Sci, Reno, NV 89557 USA Geol Survey Canada, Ottawa, ON K1A 0E8, Canada Geol Survey Canada Ottawa ON Canada K1A 0E8 a, Ottawa, ON K1A 0E8, Canada Univ Guelph, Sch Engn, Guelph, ON N1G 2W1, Canada Univ Guelph Guelph ON Canada N1G 2W1 Sch Engn, Guelph, ON N1G 2W1, Canada Environm Canada, Atmospher Environm Serv, Downsview, ON, Canada Environm Canada Downsview ON Canada Environm Serv, Downsview, ON, Canada
Titolo Testata:
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
fascicolo: D17, volume: 104, anno: 1999,
pagine: 21873 - 21878
Fonte:
ISI
Lingua:
ENG
Soggetto:
ELEMENTAL MERCURY; TEMPERATURE; ATMOSPHERE; CHEMISTRY; TESTS; SOILS; FLUX;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
25
Recensione:
Indirizzi per estratti:
Indirizzo: Gustin, MS Univ Nevada, Dept Environm & Resource Sci, Reno, NV 89557 USA Univ Nevada Reno NV USA 89557 Resource Sci, Reno, NV 89557 USA
Citazione:
M.S. Gustin et al., "Application of a laboratory gas exchange chamber for assessment of in situmercury emissions", J GEO RES-A, 104(D17), 1999, pp. 21873-21878

Abstract

The potential for the use of a laboratory gas exchange system to estimate of mercury emissions from naturally and anthropogenically mercury-enriched areas was assessed by comparison of mercury fluxes measured from the same substrate in situ and in the laboratory. In general, mercury emissions measured with the laboratory chamber for daytime conditions were of the same magnitude as mean mercury emissions measured in situ with field chambers. Mercury emissions measured with both the field chamber and laboratory chamber were lower than those measured with micrometeorological methods. Within the controlled experimental regime of the laboratory chamber, data were developed that demonstrated that substrate mercury concentrations and light are important parameters in controlling mercury emissions. However, with light and other parameters interacting with the soil, the correlation between mercury fluxes and substrate mercury concentrations declined. Mercury emissions from a variety of substrates in the dark were similar to 25% of those emissions measured in the light at the same soil surface temperature.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 31/03/20 alle ore 10:07:17