Diagnosing the traffic impact on roadside soils through a multianalytical data analysis of the concentration profiles of traffic-related elements

Carrero, Jose Antonio; Arrizabalaga, Iker; Bustamante, Julen; Goienaga, N.; Arana, Gorka; Madariaga, Juan Manuel

doi:10.1016/j.scitotenv.2013.04.047

Cited by 74 publications

(36 citation statements)

References 40 publications

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“…In addition, high exposure levels of REEs may lead to liver function decline (Wei et al 2013). Due to the rapid development of modern technology, the need of these elements has increased significantly in industry, and consequently anthropogenic REEs could emerge as a severe environmental problem in cities and significant source of contamination of urban soils (Carrero et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Using Local Moran's I to identify contamination hotspots of rare earth elements in urban soils of London

Yuan

Cave

Zhang

2018

Applied Geochemistry

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Highlights Local Moran's I is used to identify contamination hotspots of REEs in urban soils. Several areas in London soils had elevated concentrations of Ce, La, Nd, Sc, Sm, Yb and Y. Soil parent material was the natural factor leading to enrichment of REEs in some areas. Possible anthropogenic sources include fertilizer, industries activities and vehicular emission. AbstractRare earth elements (REEs) in urban soils are receiving more attention because of their increased use in modern technology. Up to now, there is little information about the spatial patterns of REEs and their influencing factors in urban soils. In this study, based on the British Geological Survey "London Earth" geochemical survey data containing a total of 6467 soil samples collected from the urban area of London, the spatial distributions of Ce, La, Nd, Sc, Sm, Yb and Y, and their influencing factors were investigated. The element Sc is included in this study as related element. Urban samples were collected at a depth of (0 to 20 cm), and total concentrations of 48 chemical elements were determined in the < 2 mm size fraction of the topsoils using X-ray Fluorescence Spectrometry (XRFS). Spatial clusters and spatial outliers were identified using the index of local Moran's I, showing elevated concentrations of REEs in the northwest, northeast and southern parts of the study areas while all the 7 REEs exhibited generally similar spatial patterns: high values were mainly located in soils over Alluvium, Glacial till and Clay-with-flints deposits, demonstrating the close relationships between REEs and the lithology. Meanwhile, hotspot analysis revealed high values of REEs in public parks, private golf clubs, wetlands and agricultural lands especially in Hillingdon, Enfield, Brent, Harrow, Croydon and Bromley. Soil parent material was identified as the primary source for larger spatial patterns of natural origin, while smaller spatial patterns were associated with anthropogenic sources including agricultural practices, industrial activities, vehicular emission and urbanization. The REE hotspots revealed in urban soils may imply potential contamination requiring further attention.

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Section: Introductionmentioning

confidence: 99%

Using Local Moran's I to identify contamination hotspots of rare earth elements in urban soils of London

Yuan

Cave

Zhang

2018

Applied Geochemistry

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“…Many studies have reported that heavy metal concentrations are positively related to traffic volume [5,6]. A recent observational study indicated that the traffic-related heavy metals accumulation in roadside soils decrease with distance to the road only in old roads that have undergone the traffic impact for a long time, but not in new roads or roads with low traffic density [37]. …”

Section: Resultsmentioning

confidence: 99%

Accumulations of Heavy Metals in Roadside Soils Close to Zhaling, Eling and Nam Co Lakes in the Tibetan Plateau

Yan

Zhang

Gao

et al. 2013

IJERPH

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Concentrations of four typical heavy metals (Cu; Zn; Cd and Pb) in roadside soils close to three lakes in the Tibetan Plateau were investigated in this study. The hierarchical tree-based regression method was applied to classify concentrations of the heavy metals and analyze their potential influencing factors. It was found that the Tibetan Plateau meadow soils with higher content of sand lead to higher concentrations of Cu; Zn and Pb. The concentrations of Cd and Pb increase with road traffic volume; and for the road segments with higher traffic volume; the Cd and Pb concentrations significantly decrease with the roadside distance. Additionally; the concentrations of Zn and Pb increase as the altitude of sampling site increases. Furthermore; the Hakanson potential ecological risk index method was used to assess the contamination degree of the heavy metals for the study regions. The results show that accumulations of Cu; Zn and Pb in roadside soils remain an unpolluted level at all sites. However; the Cd indices in the regions with higher traffic volume have reached a strong potential ecological risk level; and some spots with peak concentrations have even been severely polluted due to traffic activities.

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“…Finally, mathematical models were developed using linear regression to predict heavy metal concentrations on Bogota roads. Table 2 presents a review of the international literature (22)(23)(24)(25)(26)(27)(28)(29)(30)(31)(32)(33)(34)(35)(36)(37)(38)(39)(40) on heavy metal concentrations associated with road sediment for different traffic intensities between 1980 and 2015. A cluster analysis allowed the identification of four clusters: 1) zinc and copper concentrations, 2) lead concentration, 3) traffic density, and 4) fraction of size analyzed.…”

Section: Discussionmentioning

confidence: 99%

Correlation between vehicular traffic and heavy metal concentrations in road sediments of Bogotá, Colombia

Zafra-Mejía

Gutiérrez-Malaxechebarria

Hernández-Peña

2019

Rev. Fac. Med.

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Diagnosing the traffic impact on roadside soils through a multianalytical data analysis of the concentration profiles of traffic-related elements

Cited by 74 publications

References 40 publications

Using Local Moran's I to identify contamination hotspots of rare earth elements in urban soils of London

Using Local Moran's I to identify contamination hotspots of rare earth elements in urban soils of London

Accumulations of Heavy Metals in Roadside Soils Close to Zhaling, Eling and Nam Co Lakes in the Tibetan Plateau

Correlation between vehicular traffic and heavy metal concentrations in road sediments of Bogotá, Colombia

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