Metal-enriched nanoparticles and black carbon:A perspective from the Brazil railway system air pollution

作     者：Bianca D.Lima Elba C.Teixeira James C.Hower Matheus S.Civeira Omar Ramírez Cheng-Xue Yang Marcos L.S.Oliveira Luis F.O.Silva Bianca D.Lima;Elba C.Teixeira;James C.Hower;Matheus S.Civeira;Omar Ramírez;Cheng-Xue Yang;Marcos L.S.Oliveira;Luis F.O.Silva

作者机构：Postgraduate Program in Remote Sensing and MeteorologyGeosciences InstituteUniversidade Federal do Rio Grande do SulAv.Bento Gonçalves9500Porto AlegreRS 91501–970Brazil Research DepartmentFundação Estadual de Proteção Ambiental Henrique Luís RoesslerAv.Borges de Medeiros261Porto AlegreRS 90020–021Brazil Center for Applied Energy ResearchUniversity of Kentucky2540 Research Park DriveLexingtonKY 40511USA Postgraduate Program in MinesMetallurgy and MaterialsUniversidade Federal do Rio Grande do SulAv.Bento Gonçalves9500Porto AlegreRS 91501–970Brazil Faculty of EngineeringEnvironmental EngineeringUniversidad Militar Nueva GranadaKm 2 CajicáZipaquiráColombia Institute of Earth ScienceChina University of Geosciences(Beijing)29 Xueyuan RdHaidian DistrictChina Department of Civil and EnvironmentalUniversidad de la CostaCUCCalle 58#55-66BarranquillaAtlanticoColombia Universidad de LimaDepartamento de Ingeniería civil y Arquitectura.Avenida Javier Prado Este 4600–Santiago de Surco 1503Peru 

出 版 物：《Geoscience Frontiers》 (地学前缘（英文版）)

年 卷 期：2021年第12卷第3期

页      面：624-635页

核心收录：

学科分类：07[理学] 070602[理学-大气物理学与大气环境] 0706[理学-大气科学] 

基　　金：CNPq CAPES for their financial support 

主　　题：Nanoparticles Potential hazardous elements Environmental chemistry Human health Railway environment Indoor air quality 

摘      要：Having a better understanding of air pollutants in railway systems is crucial to ensure a clean public *** study measured,for the first time in Brazil,nanoparticles(NPs)and black carbon(BC)on two groundlevel platforms and inside trains of the Metropolitan Area of Porto Alegre(MAPA).An intense sampling campaign during thirteen consecutive months was carried out and the chemical composition of NPs was examined by advanced microscopy *** results showed that highest concentrations of the pollutants occur in colder seasons and influenced by variables such as frequency of the trains and passenger ***,internal and external sources of pollution at the stations were *** predominance of NPs enriched with metals that increase oxidative stress like Cd,Fe,Pb,Cr,Zn,Ni,V,Hg,Sn,and Ba both on the platforms and inside trains,including Fe-minerals as hematite and magnetite,represents a critical risk to the health of passengers and employees of the *** interdisciplinary and multi-analytical study aims to provide an improved understanding of reported adverse health effects induced by railway system aerosols.