Elemental composition of PM10 and PM2.5 for a savanna (cerrado) region of Southern Amazonia

Abstract

publicado na web em 26/08/2016Brazil plays an important role with regard to the emission of aerosols into the atmosphere. Ecosystems such as the Amazonian tropical forest and Brazilian Cerrado are undergoing sweeping changes. These human activities promote an increase in the levels of gases and particles emitted into the atmosphere. To determine how these activities have affected the emission of coarse and fine particulate matter (PM 10 and PM 2.5 ), atmospheric aerosol samples were collected continuously from June 2004 to April 2005 in the Cuiaba Basin of south-central Mato Grosso, Brazil. Aerosols were sampled using stacked filter units. Filters were analysed for particulate mass, black carbon and for concentrations of seventeen elements by Particle Induced X-Ray Emission. The results revealed that Mg, Al, Si, S, K, Ca, Ti and Fe were the major components detected in PM 2.5 and PM 10 . The high enrichment factors observed in PM 2.5 and PM 10 suggest that anthropogenic activities were the predominant source for elements such as Cu, Zn and Pb. These data indicate that most of the aerosols measured in the Cuiaba Basin originate from land conversion and biomass burning. These patterns are similar to those observed in other Cerrado and Amazonian forest areas that are undergoing rapid and spatially extensive land-cover change.

Chemical characterization of fine particulate matter, source apportionment and long-range transport clusters in Thohoyandou, South Africa

“…The first component is comprised of Na, Mg, Si, Al, Sb, S, Ca, Zr, and soot. Mg, Al, Si, Ca has been linked with crustal materials throughout the literature (Zhang et al, 2008;Xia and Gao, 2011;Santanna et al, 2016;Yu et al, 2013;Zhang et al, 2013;Cheng et al, 2016) and thus component one is showing emissions from crustal material i.e. dust resuspension.…”

Aporte Cuantitativo De Las Fuentes De Pm10 Y PM2.5 en Sitios Urbanos Del Valle Del Mantaro, Perú

“…Según un estudio de Klepel (2005) existen indicios de que los contaminantes vertidos a la atmosfera por la chimenea del CMLO, estarían llegando al VM. El tercer factor (7 %), conformado por el Ni, es atribuible al combustible-aceite (Viana et al 2008) y el cuarto factor (7 %), conformado por el Cl, estaría proviniendo de la quema de biomasa (Santanna et al 2016).…”

“…El tercer factor (7 %), se debe al Cr atribuible a vehículos (Srimuruganandam and Shiva-Nagendra 2012a, 2012b, Banerjee et al 2015, el cual es esperado dado que el sitio de monitoreo se ubicó en una zona de intenso tráfico vehicular. El cuarto factor (6 %) conformado por el Br es atribuible a la quema de biomasa (Echalar et al 1998, Santanna et al 2016. Alrededor de la ciudad de Huancayo también se desarrollan actividades agrícolas donde se queman pastizales y rastrojos agrícolas.…”

Variabilidade Interanual Das Propriedades Óticas De Aerossóis Em Biomas Distintos Na Amazônia Legal

“…Palácios (2017), encontrou uma pequena diferença na distribuição de tamanho para os dois locais, o que pode ser justificado pelo processo de transporte das partículas e pela característica do material particulado emitido pelo Cerrado. De acordo com Santanna et al (2016), que realizou um estudo para a região Cerrado-Pantanal, evidenciando que a atmosfera da região apresenta uma variação da composição de acordo com o período do ano. No período de seca a atmosfera apresenta material originado de queima de biomassa e provenientes do manejo de solo, enquanto que, durante o período de chuva o material particulado apresenta origem de fontes biogênicas.…”