TY - JOUR
T1 - Exposure to nanometric pollutants in primary schools
T2 - Environmental implications
AU - Rojas, Juan C.
AU - Sánchez, Nazly E.
AU - Schneider, Ismael
AU - Oliveira, Marcos L.S.
AU - Teixeira, Elba C.
AU - Silva, Luis F.O.
N1 - Publisher Copyright:
© 2018 Elsevier B.V.
PY - 2019/3
Y1 - 2019/3
N2 - School children are highly susceptible to chemicals in the atmosphere. Some studies have demonstrated that the pollution is related to respiratory problems and impaired cognitive development in children. In this context, the objective of this study was to determine nanoparticles and associated species and their origin in fresh air currents in La Salle Canoas School in Rio Grande do Sul (Brazil). Different analyses by using high-resolution transmission electron microscopy with energy-dispersive, X-ray spectroscopy (HR-TEM/SAED/EDS), and the scanning (STEM) mode were carried out. The EDS analysis of the atmospheric particles demonstrated that materials contain a significant proportion of elements such as Cr, Fe, Mn, Ni, and Si and other trace metals Zn, Pb, Zr, Ca, Cu, K, Cr, and Cd from exhaust and non-exhaust. The main source of the particles was emission from internal combustion in motor vehicles, road dust, and brake and tire wear. This emphasizes the importance of urban planning to reduce exposure of children to traffic gas emissions.
AB - School children are highly susceptible to chemicals in the atmosphere. Some studies have demonstrated that the pollution is related to respiratory problems and impaired cognitive development in children. In this context, the objective of this study was to determine nanoparticles and associated species and their origin in fresh air currents in La Salle Canoas School in Rio Grande do Sul (Brazil). Different analyses by using high-resolution transmission electron microscopy with energy-dispersive, X-ray spectroscopy (HR-TEM/SAED/EDS), and the scanning (STEM) mode were carried out. The EDS analysis of the atmospheric particles demonstrated that materials contain a significant proportion of elements such as Cr, Fe, Mn, Ni, and Si and other trace metals Zn, Pb, Zr, Ca, Cu, K, Cr, and Cd from exhaust and non-exhaust. The main source of the particles was emission from internal combustion in motor vehicles, road dust, and brake and tire wear. This emphasizes the importance of urban planning to reduce exposure of children to traffic gas emissions.
KW - Chemometric analysis
KW - Hazardous compounds
KW - Human health
KW - Metals
KW - School children
UR - http://www.scopus.com/inward/record.url?scp=85059848180&partnerID=8YFLogxK
U2 - 10.1016/j.uclim.2018.12.011
DO - 10.1016/j.uclim.2018.12.011
M3 - Artículo
AN - SCOPUS:85059848180
SN - 2212-0955
VL - 27
SP - 412
EP - 419
JO - Urban Climate
JF - Urban Climate
ER -
