Quantificação de fluxos de mercúrio gasoso na interface solo/atmosfera utilizando câmara de fluxo dinâmica: aplicação na bacia do Rio Negro

Quantification of atmosphere - soil mercury fluxes by using a dynamic flux chamber: application at the Negro River basin, Amazon

dc.creatorMagarelli, Gabriella
dc.creatorFostier, Anne Hélène
dc.date2005-12-01
dc.date2015-12-03T13:30:24Z
dc.date2015-12-03T13:30:24Z
dc.date.accessioned2018-03-29T01:24:33Z
dc.date.available2018-03-29T01:24:33Z
dc.identifierQuímica Nova. Sociedade Brasileira de Química, v. 28, n. 6, p. 968-974, 2005.
dc.identifier0100-4042
dc.identifierS0100-40422005000600007
dc.identifier10.1590/S0100-40422005000600007
dc.identifierhttp://dx.doi.org/10.1590/S0100-40422005000600007
dc.identifierhttp://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422005000600007
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/23694
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/202392
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1302625
dc.descriptionGaseous mercury sampling conditions were optimized and a dynamic flux chamber was used to measure the air/surface exchange of mercury in some areas of the Negro river basin with different vegetal coverings. At the two forest sites (flooding and non-flooding), low mercury fluxes were observed: maximum of 3 pmol m-2 h-1 - day and minimum of -1 pmol m-2 h-1 - night. At the deforested site, the mercury fluxes were higher and always positive: maximum of 26 pmol m-2 h-1 - day and 17 pmol m-2 h-1 - night. Our results showed that deforestation could be responsible for significantly increasing soil Hg emissions, mainly because of the high soil temperatures reached at deforested sites.
dc.description968
dc.description974
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.languagept
dc.publisherSociedade Brasileira de Química
dc.relationQuímica Nova
dc.rightsaberto
dc.sourceSciELO
dc.subjectmercury fluxes
dc.subjectatmosphere-soil exchange
dc.subjectflux chamber
dc.titleQuantificação de fluxos de mercúrio gasoso na interface solo/atmosfera utilizando câmara de fluxo dinâmica: aplicação na bacia do Rio Negro
dc.titleQuantification of atmosphere - soil mercury fluxes by using a dynamic flux chamber: application at the Negro River basin, Amazon
dc.typeArtículos de revistas


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