典型文献
Geochemical study of submicron particulate matter (PM1)in a metropolitan area
文献摘要：
Air pollution has become a major problem in urban areas due to increasing industrialization and urbanization.In this study ambient concentrations of PM1 and metal concentrations as well as source contributions were identi-fied and quantified by using Positive Matrix Factorization (PMF) in receptor modeling in the Metropolitan Area of Porto Alegre,Brazil.The PM1 samples were collected on PTFE filters from December 2012 to December 2014 in two sampling sites.Major ion and trace element concentrations were assessed.The average concentrations were 12.8 and 15.2 μg/m3 for Canoas and Sapucaia do Sul sites,respectively.Major ion contributions of PM1 were secondary pollutants such as sulfate and nitrate.Trace elements,especially Cu,Pb,Zn,Cd,and Ni also made important contributions which are directly associated with anthropogenic contributions.Our results show significantly higher levels in winter than in summer.Most of the PM1 and the analyzed PM species and el-ements originated from anthropogenic sources,especially road traffic,combustion processes and industrial activ-ities,which are grouped in 7 major contributing sources.A back-trajectory analysis showed that the long-range transport of pollutants was not relevant in relation to the contribution to PM1 and metal concentrations.This work highlights the importance of urban planning to reduce human health exposure to traffic and industrial emissions,combined with awareness-raising actions for citizens concerning the impact of indoor sources.
文献关键词：
中图分类号：
作者姓名：
Ismael L.Schneider;Elba C.Teixeira;Guilherme L.Dotto;Diana Pinto;Cheng-Xue Yang;Luis F.O.Silva
作者机构：
Postgraduate Program in Remote Sensing and Meteorology,Universidade Federal do Rio Grande do Sul,Av.Bento Gon(c)alves,9500 Porto Alegre,RS,Brazil;Department of Civil and Environmental,Universidad de la Costa,CUC,Calle 58 # 55-66,Barranquilla,Atlantico,Colombia;Research Department,Funda(ca)o Estadual de Prot(ca)o Ambiental Henrique Luís Roessler,Av.Borges de Medeiros,261,Porto Alegre,RS,Brazil;Chemical Engineering Department,Federal University of Santa Maria,97105-900 Santa Maria,Brazil;School of Earth Sciences and Resources,China University of Geosciences Beijing,Beijing 100083,PR China;Departamento de Ingeniería Civily Arquitectura,Universidad de Lima,Avenida Javier Prado Este 4600-Santiago de Surco 1503,Perú
文献出处：
引用格式：
[1]Ismael L.Schneider;Elba C.Teixeira;Guilherme L.Dotto;Diana Pinto;Cheng-Xue Yang;Luis F.O.Silva-.Geochemical study of submicron particulate matter (PM1)in a metropolitan area)[J].地学前缘（英文版）,2022(01):417-429
A类：
Canoas,Sapucaia
B类：
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AB值：
0.616769
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