Origin and patterns of distribution of trace elements in street dust. Unleaded petrol and urban lead

Miguel García, Eduardo de and Llamas Borrajo, Juan F. and Chacón Oreja, Enrique and Berg, Torunn and Larssen, Steinar and Roysett, Odvar and Marit, Vadset (1997). Origin and patterns of distribution of trace elements in street dust. Unleaded petrol and urban lead. "Atmospheric Environment", v. 31 (n. 17); pp. 2733-2740. ISSN 0004-6981. https://doi.org/10.1016/S1352-2310(97)00101-5.

Description

Title: Origin and patterns of distribution of trace elements in street dust. Unleaded petrol and urban lead
Author/s:
  • Miguel García, Eduardo de
  • Llamas Borrajo, Juan F.
  • Chacón Oreja, Enrique
  • Berg, Torunn
  • Larssen, Steinar
  • Roysett, Odvar
  • Marit, Vadset
Item Type: Article
Título de Revista/Publicación: Atmospheric Environment
Date: September 1997
Volume: 31
Subjects:
Faculty: E.T.S.I. Minas (UPM)
Department: Ingeniería Química y Combustibles [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

The elemental composition, patterns of distribution and possible sources of street dust are not common to all urban environments, but vary according to the peculiarities of each city. The common features and dissimilarities in the origin and nature of street dust were investigated through a series of studies in two widely different cities, Madrid (Spain) and Oslo (Norway), between 1990 and 1994. The most comprehensive sampling campaign was carried out in the Norwegian capital during the summer of 1994. An area of 14 km2, covering most of downtown Oslo and some residential districts to the north of the city, was divided into 1 km2 mapping units, and 16 sampling increments of approximately 150 g were collected from streets and roads in each of them. The fraction below 100 μm was acid-digested and analysed by ICP-MS. Statistical analyses of the results suggest that chemical elements in street dust can be classified into three groups: “urban” elements (Ba, Cd, Co, Cu, Mg, Pb, Sb, Ti, Zn), “natural” elements (Al, Ga, La, Mn, Na, Sr, Th, Y) and elements of a mixed origin or which have undergone geochemical changes from their original sources (Ca, Cs, Fe, Mo, Ni, Rb, Sr, U). Soil resuspension and/or mobilisation appears to be the most important source of “natural” elements, while “urban” elements originate primarily from traffic and from the weathering and corrosion of building materials. The data for Pb seem to prove that the gradual shift from leaded to unleaded petrol as fuel for automobiles has resulted in an almost proportional reduction in the concentration of Pb in dust particles under 100 μm. This fact and the spatial distribution of Pb in the city strongly suggest that lead sources other than traffic (i.e. lead accumulated in urban soil over the years) may contribute as much lead, if not more, to urban street dust.

More information

Item ID: 15315
DC Identifier: http://oa.upm.es/15315/
OAI Identifier: oai:oa.upm.es:15315
DOI: 10.1016/S1352-2310(97)00101-5
Official URL: http://www.sciencedirect.com/science/article/pii/S1352231097001015
Deposited by: Memoria Investigacion
Deposited on: 21 Jun 2013 11:21
Last Modified: 22 Sep 2014 11:07
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