dc.contributorUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2015-05-15T13:30:20Z
dc.date.available2015-05-15T13:30:20Z
dc.date.created2015-05-15T13:30:20Z
dc.date.issued2011
dc.identifierEnvironmental Pollution, v. 159, n. 5, p. 1190-1197, 2011.
dc.identifier0269-7491
dc.identifierhttp://hdl.handle.net/11449/123512
dc.identifier10.1016/j.envpol.2011.02.002
dc.identifier9165109840414837
dc.identifier6320037184956604
dc.description.abstractIncreased reactive nitrogen (Nr) deposition due to expansion of agro-industry was investigated considering emission sources, atmospheric transport and chemical reactions. Measurements of the main inorganic nitrogen species (NO2, NH3, HNO3, and aerosol nitrate and ammonium) were made over a period of one year at six sites distributed across an area of ∼130,000 km2 in southeast Brazil. Oxidized species were estimated to account for ∼90% of dry deposited Nr, due to the region’s large emissions of nitrogen oxides from biomass burning and road transport. NO2-N was important closer to urban areas, however overall HNO3-N represented the largest component of dry deposited Nr. A simple mathematical modeling procedure was developed to enable estimates of total Nr dry deposition to be made from knowledge of NO2concentrations. The technique, whose accuracy here ranged from <1% to 29%, provides a useful new tool for the mapping of reactive nitrogen deposition
dc.languageeng
dc.relationEnvironmental Pollution
dc.relation4.358
dc.relation1,615
dc.rightsAcesso aberto
dc.sourceCurrículo Lattes
dc.subjectReactive nitrogen
dc.subjectDry deposition
dc.subjectNitric acid
dc.subjectNitrogen dioxide
dc.subjectAgriculture
dc.titleMeasurements and modeling of reactive nitrogen deposition in southeast Brazil
dc.typeArtículos de revistas


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