Metal and metalloid accumulation in cultivated urban soils: A medium-term study of trends in Toronto, Canada

The Science of the Total Environment
Clare WisemanWilhelm Püttmann

Abstract

This study aims to examine the elemental enrichment patterns in low to medium traffic areas over a three year period in Toronto, Canada. Soils were sampled at three locations with different volumes of traffic between 2010 and 2013. A range of elements, including V, Cr, Mn, Cu, Cd, As, Sb and Pb, were measured in acid digested samples using ICP-MS. While the concentrations of Cd, Sb and Pb were found to be relatively low, a significant, albeit small increase in their levels over time was determined for all sites. For the low traffic areas, median Cd, Sb and Pb concentrations increased from 0.18mg Cd/kg, 0.14mg Sb/kg and 12mg Pb/kg in 2010 to 0.38mg Cd/kg, 0.21mg Sb/kg and 15mg Pb/kg in 2012, respectively. For the medium traffic site, the respective levels of Cd and Sb rose from 0.19mg Cd/kg and 0.14mg Sb/kg in 2010 to 0.49mg Cd/kg and 0.28mg Sb/kg in 2012. Median Pb concentrations at the medium traffic site were comparable to those at the low traffic sites (13mg/kg in 2010 and 15mg/kg in 2012). Principal Component Analysis (PCA) revealed the existence of two components (rotated), which explained 77% of the variance for all sites: 1. PC1 with large loadings of V, Cr, Co and Cu that likely originate from the commercial soil origin...Continue Reading

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Citations

Jun 10, 2016·The Science of the Total Environment·Francesco Nannoni, Giuseppe Protano
Jul 2, 2016·Chemical Reviews·Kyle D GilroyYounan Xia
Jul 23, 2016·International Journal of Environmental Research and Public Health·Chunyuan SunMing Lv
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Sep 28, 2017·Environmental Science and Pollution Research International·Marzena RachwałEiliv Steinnes
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Jan 4, 2021·Environmental Monitoring and Assessment·Zhijie LongRui Wang
Apr 4, 2021·Toxics·Ahmed A Al-TaaniCristian-Stefan Dumitriu

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