Lead contamination of soils and vegetation in the vicinity of a lead smelter in Nigeria

Oyedele, D. J.; Obioh, I. B.; Adejumo, J.A.; Oluwole, A. F.; Aina, P. O.; Asubiojo, O. I.

doi:10.1016/0048-9697(95)04810-3

Cited by 29 publications

(12 citation statements)

References 6 publications

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“…A normal average adult intake of leafy vegetables in Nigeria is between 50-100g day −1 (Oyedele et al, 1995). This could amount to a daily intake of over 85µg Cd day −1 , 120 µg Pb day −1 and 200 µg Zn day −1 .…”

Section: Discussionmentioning

confidence: 99%

Heavy Metal Uptake and Accumulation by Edible Leafy Vegetable (Amaranthus Hybridus L.) Grown on Urban Valley Bottom Soils in Southwestern Nigeria

Oluwatosin

Adeoyolanu

Ojo

et al. 2009

Soil and Sediment Contamination: An International Journal

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Heavy metals, such as cadmium (Cd), lead (Pb) and zinc (Zn), are important environmental pollutants, particularly in urban areas with high anthropogenic pressure. The uptake and accumulation of Cd, Pb and Zn in vegetables (Amaranthus hybridus L.) grown in the valley bottom soils of some cities in southwestern Nigeria were investigated. The concentration of heavy metals in vegetable leaves ranged from 0.4 to 2.0 for Pb (CV, 33), 0.38 to 1.20 for Cd (CV, 25) and 8.2 to 30.4 for Zn (CV, 33). In the vegetable stems, the concentration ranged from 0.8 to 2.6 for Pb (CV = 33), 0.6 to 2.5for Cd (CV, 22) and 11.4 to 18.9 for Zn (CV, 35). Concentration of metals in vegetable roots ranged from 2.2 to 5.1 for Pb (CV, 33), 1.4 to 4.9 for Cd (CV, 22) and 10.2 to 29.0 for Zn (CV, 35). Transfer factors (TF) were in the range of 0.22 and 3.00, with Cd having the highest TF of 3.00. Estimated intake vegetables in µg day −1 ranged from 72 to 82 for Cd, 69 to 120 for Pb and 105 to 200 for Zn. The intakes were above the recommended minimum risks levels. Potential risks, particularly for Cd and Pb intake, exceed the daily requirement for consumers of the leafy vegetable at all the sites. The apparent influence of anthropogenic inputs from the cities to these valleys was reflected by the higher concentrations than the reference location. Food quality assurance systems in vegetables grown in urban valley bottoms need to comply with the world standard on heavy metal concentration.

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Section: Discussionmentioning

confidence: 99%

Heavy Metal Uptake and Accumulation by Edible Leafy Vegetable (Amaranthus Hybridus L.) Grown on Urban Valley Bottom Soils in Southwestern Nigeria

Oluwatosin

Adeoyolanu

Ojo

et al. 2009

Soil and Sediment Contamination: An International Journal

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“…The main polluting source of the trace metals in Elazig is road traffic crowded in the city center. Although there are many studies about lead contamination in roadside vegetation in different part of the World, studies on toxic metals in fruit leaves are seldom (Tumi et al 1990;Onasanya et al 1993;Oyedele et al 1995;Singh et al 1997;Swaileh et al 2004). So, determination of these metals in different vegetations is still an obligation to eliminate any possible health risks coming from them.…”

Section: Introductionmentioning

confidence: 99%

Determination of lead, cadmium and copper in roadside soil and plants in Elazig, Turkey

Bakırdere

Yaman

2007

Environ Monit Assess

130

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The concentrations of lead, cadmium and copper in roadside soil and plants in Elazig, Turkey were investigated. Soil samples were collected at distances of 0, 25 and 50 m from the roadside. The concentrations of lead, cadmium and copper were measured by Flame Atomic Absorption Spectrophotometry (FAAS). A slotted tube atom trap (STAT) was used to increase the sensitivity of lead and cadmium in FAAS. Lead concentrations in soil samples varied from 1.3 to 45 mg kg(-1) while mean lead levels in plants ranged from120 ng g(-1) for grape in point-4 to 866 ng g(-1) for apple leaves in point-2. Lead analyses showed that there was a considerable contamination in both soil and plants affected from traffic intensity. Overall level of Cd in soil samples lies between 78 and 527 ng/g while cadmium concentration in different vegetations varied in the range of 0.8-98.0 ng g(-1). Concentrations of copper in soil and plant samples were found in the range of 11.1-27.9 mg kg(-1) for soil and 0.8-5.6 mg kg(-1) for plants. Standard reference material (SRM) was used to find the accuracy of the results of soil analyses.

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“…Dry powdered crop samples were digested with a mixture of 60% HClO 4 , concentrated HNO 3 and H 2 SO 4 . Blanks were prepared to check for background contamination by the reagents used as described by [13]. The digested samples were analyzed for heavy metals using Buck scientific model 200A/240 Atomic Absorption spectrophotometer with Air -acetylene flame at Centre Laboratory University of Ibadan, Nigeria.…”

Section: Heavy Metals In Plant Determinationmentioning

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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Lead contamination of soils and vegetation in the vicinity of a lead smelter in Nigeria

Cited by 29 publications

References 6 publications

Heavy Metal Uptake and Accumulation by Edible Leafy Vegetable (Amaranthus Hybridus L.) Grown on Urban Valley Bottom Soils in Southwestern Nigeria

Heavy Metal Uptake and Accumulation by Edible Leafy Vegetable (Amaranthus Hybridus L.) Grown on Urban Valley Bottom Soils in Southwestern Nigeria

Determination of lead, cadmium and copper in roadside soil and plants in Elazig, Turkey

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

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