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Spatial distribution of metals in soils in Baltimore, Maryland: role of native parent material, proximity to major roads, housing age and screening guidelinesAuthor(s): I.D. Yesilonis; R.V. Pouyat; N.K. Neerchal
Source: Environmental Pollution. 156: 723-731.
Publication Series: Scientific Journal (JRNL)
Station: Northern Research Station
PDF: Download Publication (622.38 KB)
DescriptionWe investigated the spatial distribution of heavy metal above-background (anthropic) contents of Cd, Co, Cu, Cr, Fe, Mn, Ni, Pb, Ti, V, and Zn in Baltimore City surface soils and related these levels to potential contaminating sources. Composite soil samples (0?10 cm depth) were digested using a nitric and hydrochloric extraction technique. Slightly more than 10% of plots exceeded United States Environmental Protection Agency screening guidelines for Pb. In a principal component analysis, the first component corresponded to Co, Cr, and Fe, which are constituents of local mafic rocks. The second component corresponded to Cu, Pb, and Zn which were significantly higher within than beyond a 100 m buffer of the major roads within the city; furthermore, Pb and Zn were higher in older residential lots.
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CitationYesilonis, Ian D.; Pouyat, Richard V.; Neerchal, Neely K. 2008. Spatial distribution of metals in soils in Baltimore, Maryland: role of native parent material, proximity to major roads, housing age and screening guidelines. Environmental Pollution. 156: 723-731..
KeywordsBaltimore Ecosystem Study, heavy metals, urban landscapes
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