Contamination indices and heavy metal concentrations in urban soil of Ibadan metropolis, southwestern Nigeria

Odewande, Adewara Adesoji; Abimbola, Akinlolu F.

doi:10.1007/s10653-007-9112-2

Cited by 96 publications

(42 citation statements)

References 19 publications

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“…In the last three decades the geochemistry of soil contaminants (particularly heavy metals) in a number of cities has been studied, such as Minneapolis, USA (Mielke et al 1984); Aberdeen, Scotland (Paterson et al 1996); Birmingham, England (Wang et al 1997); Berlin, Germany (Birke and Rauch 2000); Tallinn, Estonia (Bityukova et al 2000); Seville, Spain (Madrid et al 2004); Gainesville and Miami, Florida, USA (Chirenje et al 2003); Montana, USA (Burt et al 2003); Gibraltar (Mesilio et al 2003); Japan (Takeda et al 2003); Wolverhampton, England (Hooker and Nathanail 2006); and Ibadan, Nigeria (Odewande and Abimbola 2008). In recent years, China has also conducted such investigations; for example, Chen et al (2005) reported the Cu, Ni, Pb, and Zn contamination status in urban park soils in Beijing.…”

Section: Introductionmentioning

confidence: 99%

Assessing heavy-metal contamination and sources by GIS-based approach and multivariate analysis of urban–rural topsoils in Wuhan, central China

Ming

et al. 2009

Environ Geochem Health

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Nine potentially harmful heavy metals (Cd, Co, Cr, Cu, Hg, Mn, Pb, Ni, and Zn) were measured in 477 topsoil samples collected from urban-rural areas in the city of Wuhan in order to identify their concentrations and possible sources, and characterize their spatial variability for risk assessment. Results showed that in most rural areas heavy-metal concentrations in soil were similar to their natural background values, but Cd, Cu, Hg, Pb, and Zn concentrations were relatively higher in densely populated districts and around industrial facilities. Multivariate analyses (correlation matrix, principal component analysis, and cluster analysis) indicated that Cd, Cu, Hg, Pb, and Zn were mainly derived from anthropogenic inputs, and Co, Cr, and Mn were controlled by natural source, whereas Ni appeared to be affected by both anthropogenic and natural sources. The result of risk assessment indicated that nearly 48% of the study area suffered from moderate to severe contamination.

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Section: Introductionmentioning

confidence: 99%

Assessing heavy-metal contamination and sources by GIS-based approach and multivariate analysis of urban–rural topsoils in Wuhan, central China

Ming

et al. 2009

Environ Geochem Health

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“…Many authors have reported the contamination of heavy metals in urban soils (Biasioli et al 2006(Biasioli et al , 2007Chen et al 1997Chen et al , 2005Chirenje et al 2004;Chon et al 1995;Chung and Li 2002;Imperato et al 2003;Kelly et al 1996;Lee et al 2006;Li et al 2001;Linde et al 2001;Lu et al 2003;Madrid et al 2002;Manta et al 2002;Möller et al 2005;Morton-Bermea et al 2008;Odewande and Abimbola 2008;Paterson et al 1996;Pichtel et al 1997;Sanchez Martin et al 2000;Thuy et al 2000;Wilcke et al 1998). These studies have provided valuable information about possible contamination of heavy metals in urban soils, including chemistry, mobility and bioavailability of the heavy metals in the urban environment.…”

Section: Introductionmentioning

confidence: 99%

Contamination and potential mobility assessment of heavy metals in urban soils of Hangzhou, China: relationship with different land uses

Bai

2009

Environ Earth Sci

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Concentration and distribution of heavy metals (Cd, Cu, Pb and Zn) in urban soils of Hangzhou, China, were measured based on different land uses. The contamination degree of heavy metals was assessed on the basis of pollution index (PI), integrated pollution index (IPI) and geoaccumulation index (I geo ). The 0.1 mol l -1 HCl extraction procedure and gastric juice simulation test (GJST) were used to evaluate the potential mobility and environmental risk of heavy metals in urban soils. The average concentration of Cd, Cu, Pb and Zn in urban soils was measured at 1.2 (with a range of 0.7-4.6), 52.0 (7.4-177.3), 88.2 (15.0-492.1) and 206.9 (19.3-1,249.2) mg kg -1 , respectively. The degree of contamination increased in the order of industrial area (IA) [ roadside (RS) [ residential and commercial areas (RC) [ public park and green areas (PG). The PIs for heavy metals indicated that there is a considerable Cd, Cu, Pb and Zn pollution, which originate from traffic and industrial activities. The IPI of these four metals ranged from 1.6 to 11.8 with a mean of 3.5, with the highest IPI in the industrial area. The assessment results of I geo also supported that urban soil were moderately contaminated with Cd and to a lesser extent also with Cu, Pb and Zn. The IP and I geo values reveal the pollution degree of heavy metal was the order of Cd [ Pb [ Zn & Cu. It was shown that mobility and bioavailability of the heavy metals in urban soils increased in the order of Cd [ Cu [ Zn & Pb. Owing to high mobility of Cd and Cu in the urban soils, further investigations are needed to understand their effect on the urban environment and human health. It is concluded that industrial activities and emissions from vehicles may be the major source of heavy metals in urban contamination. Results of this study present a rough guide about the distribution and potential environmental and health risk of heavy metals in the urban soils.

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“…We are aware of similar studies in Nigeria (Onianwa et al 2003;Iwegbue et al 2006;Odewande and Abimbola 2008), but these studies may be limited by not generating enough geographical widespread dataset of various artisan activities that are typical of urban cities of developing countries. Besides, the studies were conducted in reasonably industrialized regions of Nigeria, and this might have interfered with the investigated anthropogenic activities.…”

Section: Resultsmentioning

confidence: 99%

Concentrations and pattern of Fe, Cu, Cr, and Zn contamination in the soils of Akure, Nigeria

et al. 2011

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An assessment was made on twenty-eight topsoils collected from seven sites with intense artisan activities in the city of Akure, Nigeria, using geochemical approach in order to establish anthropogenic influence on metal contamination and to assess the severity of the contamination in the urban environment. Concentrations of Fe, Cu, Zn, and Cr were determined in the samples by atomic absorption spectrophotometry. The results revealed between 137-and 165-fold elevation of Fe, between 17-and 94-fold elevation of Cu, between 50-and 137-fold elevation of Zn, and between 1-and 3-fold elevation of Cr in topsoil relative to background levels. This indicates that except for Cr, soil contaminations by the metals were due to anthropic sources such as mechanic and vulcanizers workshops. The current average levels of copper exceeded the target value in Nigeria and in many developed countries, while Zn and Cr are generally lower than the respective soil quality guidelines. The contamination/pollution index maps figured out mechanic workshop as the main source of diffuse contamination and also show the influence of the point sources of contamination to urban topsoils. Cu contamination found around the soils of the mechanic/battery charger workshop is potentially serious (severe pollution), and this may pose health risk to people dwelling around these sites or within the metropolis. Children could be at greater risk than adults, because of their hand-to-mouth behaviors that increase their exposure potential.

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Contamination indices and heavy metal concentrations in urban soil of Ibadan metropolis, southwestern Nigeria

Cited by 96 publications

References 19 publications

Assessing heavy-metal contamination and sources by GIS-based approach and multivariate analysis of urban–rural topsoils in Wuhan, central China

Assessing heavy-metal contamination and sources by GIS-based approach and multivariate analysis of urban–rural topsoils in Wuhan, central China

Contamination and potential mobility assessment of heavy metals in urban soils of Hangzhou, China: relationship with different land uses

Concentrations and pattern of Fe, Cu, Cr, and Zn contamination in the soils of Akure, Nigeria

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