Evaluation of soil contamination status around a municipal waste dumpsite using contamination indices, soil-quality guidelines, and multivariate statistical analysis

摘要: Indiscriminate dumping of municipal solid wastes in and around most cities Nigeria coupled with improper waste management the available dumpsites posed a major threat pollution surrounding soils. This study assesses concentration heavy metals contamination status soils dumpsite located at Arufe street, Omuooke-Ekiti, SW, using indices, soil-quality guidelines, multivariate statistical analysis. Soil samples from different depths were taken center surroundings distances directions. The depth 0–50 cm (topsoil) was significantly higher than 50–100 cm(subsoil). mean concentrations topsoil showed following order Fe > Cr > Mn > Zn > Pb > Cu > Ni while those cation followed Ca > K > Na > Mg. Exceptionally high compared background values found or close to dumpsite, which indicates an anthropogenic contribution. Compared adopted guideline, only Cr Pb well above threshold value. enrichment factor all except were   Pb > Mn > Zn > Fe > Cu > Ni. modified degree be mainly less 1.5 dumpsite. ecological risk index (ranged 4.37–505.55) implies low considerable for significant positive correlations observed among cations indicate that these probably have similar sources properties. PCA reveals strong association may source. cluster analysis categorized sampling points into three groups spatial similarities. combined indices guidelines indicated are polluted being because