Speciation of Heavy Metals in Sediment of Agbabu Bitumen deposit area, Nigeria

Fagbote, E. O.; Olanipekun, E. O.

doi:10.4314/jasem.v14i4.63255

Cited by 29 publications

(41 citation statements)

References 8 publications

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“…Zn in high levels in the Fe/Mn oxide phase agree with (Fagbote. et al, 2010) and (Jian-Min et al, 2007) [23] [24]. According to Jian-Min results under reducing conditions metals present in the Fe-Mn oxide phase are unstable and easily released through dissolution releasing soluble metals.…”

Section: Species Bound To Fe-mn Oxidesupporting

confidence: 83%

Determination of Heavy Metals in Two Regions from Kirkuk City Using Sequential Extraction

Hussain¹

2016

GEP

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Soil is a major reservoir for heavy metals and other contamination as it possesses an ability to absorb these metals on the surface of clay minerals and bind various chemicals. These heavy metals and chemicals can exist in various forms in soil and different forces keep them bound to clay minerals and soil particles. The aim of the present work is to estimate the concentration levels of some heavy metals Zn, Cu, Pb and Cd in two sites of soil Kirkuk city. In this study the first sample was taken from inside the city of four areas around (Northern Oil Company) in Kirkuk city, while the second sample was taken from outside the city of four areas and both were randomly chosen. Sequential extraction procedure was applied to fractionate heavy metals which may help in the prediction of their mobility, bioavailability and fate of the metal contaminant. Results of sequential extraction showed that Cd and Pb were mainly bound to residual fraction, Cu was mainly bound to organic fraction and Zn was bound to Fe-Mn oxide fraction in the two sites of the study. The overall mean values obtained for the metals in the fractions gave the range: inside the city Cu (28.12 ppm), Zn (77.9 ppm), Pb (21.73 ppm) and Cd(4.21 ppm), and outside the city Cu (24.65 ppm), Zn (59.28 ppm), Pb (13.25 ppm) and Cd (2.38 ppm). The extracts were analyzed for heavy metal, using flameless-atomic absorption spectrophotometers (Flameless-AAS).

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Section: Species Bound To Fe-mn Oxidesupporting

confidence: 83%

Determination of Heavy Metals in Two Regions from Kirkuk City Using Sequential Extraction

Hussain¹

2016

GEP

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“…Soil contamination by heavy metals is a major concern because at high concentration they can harm human life and the environment [1]. Some of the contributors to soil contamination include mining, steel and iron industry, smelting procedures, chemical industries, traffic, agriculture and domestic activities [2].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Heavy Metal Pollution on Soil in Vaderbijlpark, South Africa

Mtunzi¹

2015

IJEMA

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Abstract:In this study, inductive coupled plasma-optical emission spectroscopy (ICP-OES) is employed for the evaluation of soil pollution for selected metals in the Vanderbijlpark area of South Africa. Soil samples investigated were collected from five different sites in the city based on their proximity to the industrial areas of Vanderbijlpark. Soil samples were collected from close to traffic robots, farms, township schools, Iemas garage and central East 5 (CE5) suburbs. The results obtained show metal levels at the robot decrease in the order Pb >

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“…Devutluoglu et al, (2010) reported 30% while Liang et al, (2014) also reported 33.34% of copper contentsin this fraction. Studies have shown that substantial amount of copper in various soils is often bound to organic phase because the metal is strongly fixed by organic matter to form organic-copper compounds easily (Fagbote and Olanipekun, 2010). This implies that organic matter retains copper by complexation and not by ion exchange (Wu et al, 1999).…”

Section: Coppermentioning

confidence: 99%

Trace metals distribution in different geochemical phases of soils around automobile junk markets in southern Nigeria

Osakwe¹

2018

Ife Journal of Science

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Chemical forms of some trace metals in soils around some selected automobile junk markets were studied using five step sequential extraction procedure. The results revealed that nickel, chromium and iron were of lithogenic origin while copper, lead, manganese and cadmium were from anthropogenic sources. The residual fraction was the most important phase for nickel, chromium and iron with the average amounts of 20.38%, 29.93% and 31.09% respectively. Copper and lead were mainly associated with the organic fraction having the average amounts of 24.06% and 22.89% respectively. Manganese predominated in Iron-Manganese oxide phase with an average amount of 23.76% while cadmium existed mainly in the exchangeable phase with an average amount of 30.36%. These results suggest that nickel, chromium and iron cannot be mobilized while cadmium is the most mobile and is easily available for plant uptake. Lead, manganese and copper are relatively stable but may become mobile if there are changes in soil pH or redox potential. The amounts of the metals in the non exchangeable phases were generally high but with relative high mobility factor values obtained for all the metals, changes in the soils physicochemical conditions may lead to remobilization of the metals and they may become bioavailable to plants and may enter food chain which implies a contamination risk for the metals.

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Speciation of Heavy Metals in Sediment of Agbabu Bitumen deposit area, Nigeria

Cited by 29 publications

References 8 publications

Determination of Heavy Metals in Two Regions from Kirkuk City Using Sequential Extraction

Determination of Heavy Metals in Two Regions from Kirkuk City Using Sequential Extraction

Evaluation of Heavy Metal Pollution on Soil in Vaderbijlpark, South Africa

Trace metals distribution in different geochemical phases of soils around automobile junk markets in southern Nigeria

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