Studia Geophysica et Geodaetica

, Volume 54, Issue 4, pp 633–650 | Cite as

Magnetic studies and scanning electron microscopy — X-ray energy dispersive spectroscopy analyses of road sediments, soils and vehicle-derived emissions

  • Marcos A. E. ChaparroEmail author
  • Débora C. Marié
  • Claudia S.G. Gogorza
  • Ana Navas
  • Ana M. Sinito


Human health and environmental problems related to particulate matter emission from vehicles has become a topic of research interest in recent years. These airborne particles can not only be directly inhaled, but are also present as suspended and deposited particles on paved areas and roadside soils. Here we report on magnetic studies, scanning electron microscopy (SEM), X-ray energy dispersive spectroscopy (EDS) and chemical analyses of vehicle-derived particles collected from both primary sources and as deposited particles on roads and soils. Preliminary results, recently published by the authors, have revealed that the magnetic signal of such particles is controlled by a magnetite-like phase with magnetic grain size ranging between 0.1 µm and 5 µm. An enrichment of some trace elements: Ba, Cr, Cu, Zn and Pb was also found. In this study we focus on SEM and EDS complementary studies of magnetic extracts. SEM observations showed small individual particles or spherulites, small aggregates in the form of chains or clusters, large aggregates of spherules, flake-like bodies, fibre-like particles, sheet-like particles, irregular debris and large particle agglomerates, i.e. a wide variety of shapes. Grain size distribution is also in agreement with magnetic grain size estimations. Additionally the following elements: C, O, Na, Mg, Al, Si, S, K, Ca, V, Ba, Ti, Cr, Mn, Fe, Cu, Zn and Pb were detected by EDS analysis.


atmospheric pollution diesel/gas soot magnetic proxies PM vehicle emissions wear particles 


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Copyright information

© Institute of Geophysics of the ASCR, v.v.i 2010

Authors and Affiliations

  • Marcos A. E. Chaparro
    • 1
    Email author
  • Débora C. Marié
    • 1
    • 2
  • Claudia S.G. Gogorza
    • 1
  • Ana Navas
    • 3
  • Ana M. Sinito
    • 1
  1. 1.Instituto de Física Arroyo Seco (UNCPBA)-CONICETTandilArgentina
  2. 2.Universidad Nacional de Mar del Plata (UNMdP)Mar del PlataArgentina
  3. 3.Estación Experimental de Aula DeiCSICZaragozaSpain

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