A Survey of Trace Metals in Vegetation, Soil and Lower Animal Along Some Selected Major Roads in Metropolitan City of Lagos

Awofolu, Omotayo Rafiu

doi:10.1007/s10661-005-4440-0

Cited by 127 publications

(97 citation statements)

References 17 publications

(15 reference statements)

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“…Bedobo (30 mg·kg -1 ) has the highest concentration, while Mari (7 mg·kg -1 ) has the lowest. Betare Oya soils concentrations in Cu are lower than the one of the earth's crust (75 mg·kg -1 ), but higher than those of Lagos (0.1-2.9 mg·kg -1 ) [22]. In general, Co concentrations in the four sites are lower than normal value (40 mg·kg -1 ) authorized by the WHO [15].…”

Section: Bearing Comparison Between Sampling Sitesmentioning

confidence: 85%

Impending Pollution of Betare Oya Opencast Mining Environment (Eastern Cameroon)

Natanael¹,

Daniel²,

Étamé³

et al. 2015

JESE-B

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Mining resources are offered by the natural milieu and liable to exploitation. Raw materials extracted are essential for jewellery and economy. But in most cases, the environmental impact assessment is disappointing. In this study conducted at Betare Oya, mining residues are directly disposed in the immediate environment without passing through the tailing ponds for treatment, despite environmental laws and standards. Soluble components of matter are slowly dissolved, drained by meteoric water and flowed into tail bay vicinity. Soil and mining residues were sampled in Mari, Mbigala, Mboufa and Bedobo, respectively, four sub-watershed of Lom, the main river of the region. Concentration of nine MTE (metallic trace elements): As, Cd, Cr, Cu, Co, Ni, Pb, Zn and Hg were determined by ICP-MS (inductively coupled plasma-mass spectrometry). Highest concentrations of trace and toxic metals in soil and mining residues are: Cr (210 mg·kg -1 ) > Zn (136 mg·kg -1 ) > Ni (64 mg·kg -1 ) > As (34 mg·kg -1 ) > Cu (30 mg·kg -1 ) > Pb (25 mg·kg -1 ) > Co (17 mg·kg -1 ) > Cd (0.5 mg·kg -1 ) > Hg (0.1 mg·kg -1 ), respectively. These results let assume that it is a risk of environmental pollution and poisoning relative to these elements around Betare Oya opencast mining area, with impact on human health.

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Section: Bearing Comparison Between Sampling Sitesmentioning

confidence: 85%

Impending Pollution of Betare Oya Opencast Mining Environment (Eastern Cameroon)

Natanael¹,

Daniel²,

Étamé³

et al. 2015

JESE-B

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“…Each of the solid residues obtained was digested with a 3:1 concentrated HNO 3 and HClO 4 mixture for 10minutes at room temperature before heating on a hot plate. The digested mixture was placed on a hot plate and heated intermittently to ensure a steady temperature of 150°C over 5 hours until the fumes of HClO 4 were completely evaporated [12]. The mixture was allowed to cool to room temperature and then filtered using Whatman No.1 filter paper into a 50 cm3 volumetric flask and made up to the standard mark with deionized water after rinsing the reacting vessels, to recover any residual metal.…”

Section: Heavy Metal Analysismentioning

confidence: 99%

Quantitative Changes in Soil Properties and Plant Uptake of Metals on Municipal Solid Waste Dumpsite in Nigeria

Ogunmodede

Ojo

2015

ILCPA

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ABSTRACT. In this work concentrations of Cd, Pb, Cr, Fe, Co, Ni, Cu, Zn and Mn were determined in soils and plants from refuse dumpsites in Ado Ekiti, Nigeria. The refuse dump soils were evaluation using contamination/pollution factor(C/P), Enrichment factor (EF), Index of Geoaccumulation (Igeo) and Pollution load index were calculated. The observation suggests high C/P values of the dump soil are polluted by Cd, Cr and Ni acts as a sink for heavy metals contributed from anthropogenic sources in the study area. C/P data, EF, PLI and (Igeo) indicated that these heavy metals originate from anthropogenic sources. Fe and Ni loads in plants from the refuse dump soils pronounced maximum concentration than Nigeria guideline. Transfer ratios for Cd, Co, Cu, Zn, Pb and Fe of plants from the control soils were higher than those from the refuse dump soils, INTRDUCTIONSoil is a vital resource for sustaining basic human needs, a quality food supply and a livable environment. It serves as a sink and recycling factory for both liquid and solid wastes known as dumpsite [1]. Dumpsites, especially in most third world countries, comprise of a higher proportion (50-90%) of organic materials [2]; however, a considerable proportions of plastic, paper, metal rubbish and batteries which are known to be sources of metals which may be hazardous to man and his environment are also present [3]. These metals are not biodegradable and have toxic effects on living organisms at certain level of concentration. Exposure of man to such metals may cause blood and bone disorders, kidney damage and decreased mental capacity and neurological damage [4]. Crops absorb whatever is present in the soil medium and therefore these hazardous metals are also absorbed and become bio-accumulated in the roots, stems, fruits, grains and leaves of the crops [5], which may finally be transferred to man in the food chain. Most edible crops are indiscriminate in their extraction of nutrients from the soil and thus will extract the non-desirable heavy metals alongside the required essential nutrients. The present study was carried out to examine the effects of municipal solid waste on soil physicochemical properties and identify the possible pathway for the transfer of heavy metals from these sites into the food chain.

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“…Sediments sampling: Fifty five sediment samples were collected from four roads that experience intense traffic conditions in Bida Town with the aid of stainless spoon, washed with soap and rinsed with distilled water after each sampling (Awofolu, 2005). These roads are BCCIdi road, Govt.…”

Section: Studied Area: Bida Town Lies At 9°06mentioning

confidence: 99%

“…These deposits as street sediment have become an important medium for the study of anthropogenic pollutants and their possible sources (Ferguson and Kim, 1991;Watts and Smith, 1994;De Miquel et al, 1997;Naqerotte and Day, 1998;McAllister et al, 2000;2005). Urban street sediments have limited residence times and therefore provide a record of recent accumulations (Pereira et al, 2007;Pagotto et al, 2001;Sutherland and Tolosa, 2000;Sutherland, 2003).…”

Section: Introductionmentioning

confidence: 99%

Heavy Metals Contamination of Road-Deposited Sediments

Yisa¹

2010

American Journal of Applied Sciences

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Problem statement: Impact of anthropogenic activities on man and his environment as a result of the growing rate of urbanization in Bida, Nigeria is of a great concern. Street sediments that accumulate along pavements in urban environments have the potential to provide considerable loadings of heavy metals to receiving waters and water bodies, particularly with changing environmental conditions. The objective of this research was to evaluate the streets sediment contamination in Bida, Nigeria. Approach: Fifty five sediment samples were collected from four roads that experience intense traffic conditions and analyzed in the laboratory for some heavy metals by atomic absorption Spectrophotometric method and multivariate statistical techniques. Results: The overall decreasing metal concentration order was: Pb > Mn > Fe > Zn > Cu > Cr > Ni > Cd. Significantly positive correlation was only found between Cd and organic matter (r = 0.580). Factor analysis shows that road deposited sediment quality data consists of four major components accounting for 77.11% of cumulative variance of the contamination: Ni, pH and silt + clay; Cr, Fe and organic matter; Mn and Zn and finally Cu and Pb. Discriminant analysis revealed that the first two Discriminate Functions (DF1 and DF2) contain 90.61% information for Cu, Pb and Ni accumulation. Conclusion: This study concluded that the concentrations of all metals measured in Bida can be considered to present a low level of contamination and that multivariate statistical analysis is a useful tool in understanding contaminants relationships.

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A Survey of Trace Metals in Vegetation, Soil and Lower Animal Along Some Selected Major Roads in Metropolitan City of Lagos

Cited by 127 publications

References 17 publications

Impending Pollution of Betare Oya Opencast Mining Environment (Eastern Cameroon)

Impending Pollution of Betare Oya Opencast Mining Environment (Eastern Cameroon)

Quantitative Changes in Soil Properties and Plant Uptake of Metals on Municipal Solid Waste Dumpsite in Nigeria

Heavy Metals Contamination of Road-Deposited Sediments

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