Abstract：
:This study assessed some physicochemical properties and heavy metal contamination of four major dumpsites in Nsukka metropolis. Soil samples were collected randomly at depth of 15 cm. Physicochemical properties were determined. Levels of lead, chromium, iron, manganese, zinc, cadmium, and copper were analyzed using atomic absorption spectrophometer (AAS). Soil pH ranged 5.68-6.82, temperature 25.30-29.67 ° C, and moisture 2.23-7.66%. Soil particle size distribution had higher percentages of sand 40-55% followed by silt 15-35% and clay 10-30%. Average levels of Pb, Cr, Fe, Mn, Zn, Cd, and Cu from the dumpsites ranged from 0.08 ± 0.04 mg/kg to 1.40 ± 0.15 mg/kg, 0.17 ± 0.09 mg/kg to 1.66 ± 0.87 mg/kg, 14.05 ± 5.13 mg/kg to 21.08 ± 0.01 mg/kg, 4.47 ± 0.54 mg/kg to 16.83 ± 0.80 mg/kg, 9.10 ± 3.05 mg/kg to19.33 ± 0.12 mg/kg, 0.02 ± 0.01 mg/kg to 1.15 ± 0.30 mg/kg, and 0.77 ± 0.26 mg/kg to 7.29 ± 2.65 mg/kg, respectively. Heavy metal profile in the dumpsite soils was Fe > Zn > Mn > Cu > Cr > Pb > Cd. Heavy metal load by dumpsites was Obimo > Ikenga Hotel > UNN > Obukpa. All the heavy metals evaluated except Fe increased as pH, temperature, and sand contents of dumpsite soil increased. Retention of Fe by soil was positively related to its clay contents. The values of heavy metals in soils from the dumpsites were far below the permissible limits set by European Regulatory Standard (EURS STD), US Environmental Protection Agency (USEPA), and Federal Environmental Protection Agency (FEPA) for standard soil. The dumpsites require no remediation as at the time of this study.
journal_name
Environ Monit Assessjournal_title
Environmental monitoring and assessmentauthors
Ohanu CM,Ekeh FN,Ohanu IB,Aguzie ION,Ivoke Ndoi
10.1007/s10661-020-08450-8subject
Has Abstractpub_date
2020-07-01 00:00:00pages
477issue
7eissn
0167-6369issn
1573-2959pii
10.1007/s10661-020-08450-8journal_volume
192pub_type
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