Environmental Engineering Reference
In-Depth Information
Conclusion
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Urban soils situated lengthways the main streets are: Urbic Regosol, Regosol
and Humic Regosol in Bucharest city, Urbic and Mixic Entiantrosol in Iassy city
and Urbic Mixic and Urbic-Alluvic Entiantrosol in Baia Mare city.
Between analyzed heavy metals (Cd, Co, Cr, Cu, Mn, Ni, Pb and Zn), lead is the
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chemical element that has been found at pollutant level in soils at all three locations.
Lead concentration in the three municipalities' soils, at medium level content,
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exceed the maximum allowable limit values by 1.5 times (Bucharest), 1.2 times
(Iassy), and 7.9 times (Baia Mare).
Pedogegeochemic (PAI) and Geochemic (GAI) abundance indexes values are
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small for Cr, Cu, Mn and Ni (around one value), showing in this way geogenic
origin of these chemical elements, while high values of the same abundance
indexes for Cd, Pb and Zn reveal a significant anthropogenic contribution.
Urban soils situated lengthways the main streets of Baia Mare are polluted with
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lead, zinc, copper and cadmium, while urban soils at similar locations in
Bucharest and Iassy are contaminated very severe with lead and zinc, severe
with copper, and moderate with cadmium.
The greatest part of total pollutant chemical elements (Cd, Cu, Pb and Zn) is
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present in the soluble fraction (soil solution) and potential soluble (exchangeable
fraction and organic matter bound fraction).
References
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