2018
DOI: 10.5696/2156-9614-8.19.180906
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Heavy Metal Contamination and Ecological Risk Assessment in Soils and Sediments of an Industrial Area in Southwestern Nigeria

Abstract: Background.Increased growth of industrial activities, especially in urban centers, is one of the main sources of toxic substances in Nigeria. The level of these impacts is not well known. Soil and sediment samples from one such industrial area were examined for their mineralogical composition and heavy metals contents in order to assess the level of contamination and potential ecological risk status.Methods.Mineralogical composition of the media and their heavy metals concentrations were determined using X-ray… Show more

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Cited by 58 publications
(30 citation statements)
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References 25 publications
(24 reference statements)
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“…Potential Ecological Risk Index (PERI) was calculated according to Solomon et al 39 i.e. by the multiplication of C s i (metal concentration) with C n i (background value) 40 and toxic response factor (T r i ) values for Cu, Pb, Ni, Cr, Zn, Mn was taken as 5, 5, 5, 2, 1, 1 41 44 . The potential ecological risk factor of single metal (E r i ) and potential ecological risk index are as categorized in Table S1 35 .…”
Section: Methodsmentioning
confidence: 99%
“…Potential Ecological Risk Index (PERI) was calculated according to Solomon et al 39 i.e. by the multiplication of C s i (metal concentration) with C n i (background value) 40 and toxic response factor (T r i ) values for Cu, Pb, Ni, Cr, Zn, Mn was taken as 5, 5, 5, 2, 1, 1 41 44 . The potential ecological risk factor of single metal (E r i ) and potential ecological risk index are as categorized in Table S1 35 .…”
Section: Methodsmentioning
confidence: 99%
“…Manually, wasted or broken devices are sorted with huge effort and then disassembled. Moreover, these devices are made of different dangerous substances similar to silver (Ag), lead (Pb), mercury (Hg) and various flame‐retardants substances . Further, expensive raw substances such as gold (Au), copper (Cu), platinum (Pt), titanium (Ti) are also present in very small amount in these e‐ wastes .…”
Section: Introductionmentioning
confidence: 99%
“…[53,54] Air pollution is happened during burning of the e-waste to destroy them. [57,58] Further, expensive raw substances such as gold (Au), copper (Cu), platinum (Pt), titanium (Ti) are also present in very small amount in these e-wastes. Further, all these are washed by rain water or any other sources that finally goes to sea and hamper the sea animals' lives too.…”
mentioning
confidence: 99%
“…The extent to which heavy metals contaminate the water bodies is highly influenced by their initial concentration, microbe's activities, chemical reactions, and the physicochemical properties of soil sediments [2]. Swamps and rivers sediments usually serve as a natural reservoir for heavy metals and other compounds [3].…”
Section: Introductionmentioning
confidence: 99%
“…Heavy metals, just like other inorganic elements are non-biodegradable and they can persist in the environment for a long time [7]. Hence, they will accumulate in sediments and become concentrated within the food web, with the fishes accumulating them in their tissues, which human beings will finally consume [3,8]. According to Shuhaimi [9], sediment is a carrier and source of contaminants in aquatic environment; therefore if it is contaminated, it can leads to severe environmental problems.…”
Section: Introductionmentioning
confidence: 99%