Environmental studies in two communes of Santiago de Chile by the analysis of magnetic properties of particulate matter deposited on leaves of roadside trees
Dust
; Forestry
; Magnetic levitation vehicles
; Magnetic susceptibility
; Magnetic variables measurement
; Magnetism
; Plants (botany)
; Saturation magnetization
; Airborne particulate matters
; Environmental studies
; Particulate Matter
; Remanent magnetization
; Robinia pseudo-acacia
; Santiago de Chile
; Traffic flow
; Urban trees
; Particles (particulate matter)
; ferromagnetic material
; magnetite
; atmospheric deposition
; atmospheric pollution
; deciduous tree
; dust
; environmental education
; leaf
; magnetic property
; magnetic susceptibility
; magnetite
; remanent magnetization
; road traffic
; roadside environment
; traffic emission
; urban pollution
; Acer
; Acer negundo
; Article
; Chile
; dust
; magnetism
; nonhuman
; particulate matter
; plant leaf
; Platanus orientalis
; priority journal
; Robinia pseudoacacia
; traffic
; tree
; urban area
; Chile
; Metropolitana
; Santiago [Metropolitana]
; Acer negundo
; Platanus orientalis
; Robinia pseudoacacia
Scopus学科分类:
Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要:
Emissions from motor vehicles are considered to be one of the main sources of airborne particulate matter in Santiago. International researchers have shown that particulate matter contains metal oxides and magnetic particles, both of which are emitted mainly from vehicles exhaust pipes. On the other hand, trees are effective in reducing such contamination, so that they act as passive collectors of particulate matter. This work presents the results obtained from the first magnetic study of the particulate matter collected in two areas of the city of Santiago de Chile. Magnetic susceptibility and Saturation Isothermic Remanent Magnetization (SIRM) were determined in leaves from abundant urban trees and from urban dust samples. Results indicate that most of the samples contain ferromagnetic minerals with magnetite (Fe3O4) as the main carrier. Values of magnetic susceptibility (SI��10−6�m3/kg) in the range 0.04–0.24 for leaves and in the range 10–45 for urban dust were determinated. In one of the city areas studied, significant correlation between the particulate matter deposited on leaves of Platanus orientalis and measured traffic flows was obtained. In addition, it was possible to estimate that the species Platanus orientalis and Acer negundo have a better ability to capture particulate matter than the species Robinia pseudoacacia. � 2016 The Authors
Universidad de Chile, Facultad de Ciencias Qu�micas y Farmac�uticas, Laboratorio de Qu�mica de la Atm�sfera, Chile; Universidad Aut�noma de M�xico (UNAM, Unidad Michoac�n del Instituto de Geof�sica), Mexico
Recommended Citation:
Mu�oz D,, Aguilar B,, Fuentealba R,et al. Environmental studies in two communes of Santiago de Chile by the analysis of magnetic properties of particulate matter deposited on leaves of roadside trees[J]. Atmospheric Environment,2017-01-01,152