Levels of Heavy Metals in and Around Scrap Car Dumpsite at Uwelu, Nigeria

Aisien, Felix Aibuedefe

doi:10.9734/bjast/2014/5052

Cited by 8 publications

(4 citation statements)

References 26 publications

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“…This is expected, as increasing distance from the scrapyard means decreasing heavy metals concentrations, which are mostly alkaline. This nding is comparable to a study by [34] where the pH at a dumpsite decreased from 5.9 to 4.7 at a distance of 18 m from the dumpsite.…”

Section: Spatial Distribution Of Heavy Metalssupporting

confidence: 87%

Assessment of heavy metal pollution resulting from informal E-wastes recycling in the Greater Accra Region of Ghana

Teye

Tetteh

2021

Preprint

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This study investigated the levels and spatial distributions of four selected heavy metals in the soil and drainage components emanating from informal E-waste recycling activities at Ashaiman scrapyard, in the Greater Accra Region, Ghana. The metals are Cadmium (Cd), Chromium (Cr), Copper (Cu) and Lead (Pb). Five sampling sites were randomly selected, with top and sub-soil sampled from the two open burning areas (hereafter H and F). Three sites in the drainage that runs through the scrapyard were similarly selected for sample collection; a control upstream (soil-sediment-water; WSC) and two experimental units downstream (soil-sediment-water; WS1 and surface water only; WS2). Four control topsoil samples were taken at distances of 25, 50, 75 and 100 m away from the scrapyard. Composite sample of three sampling units per site, including pH analysis, with two replications per treatment, were investigated using standards methods. Spatial distribution of the metals in the scrapyard were analyzed using Inverse Distance Weighted (IDW) interpolation method. Coefficient of variation (CV) was used to investigate the source of pollution. The pollution levels were investigated using three criteria, namely Geoaccumulation Index (Igeo), Contamination Factor (CF) and Pollution Load Index (PLI). Correlation analysis was used evaluate the relationships between the metals. Mean CV of 88.5% suggests that the scrapyard pollution is anthropogenically-driven. Igeo of soil samples from the scrapyard revealed the following: (i) Cd and Pb (unpolluted to strongly polluted), (ii) Cu (unpolluted to moderately polluted), and (iii) Cr (unpolluted). CF revealed the following: (i) Cd (moderate to strong pollution), (ii) Cu (moderate pollution), (iii) Cr (low pollution), and (iv) Pb (high pollution), but the metals exhibited moderate PLIs. Spatial distribution maps revealed heavy metal pollution decline with distance away from the scrapyard, which was inversely related to pH levels. WSC showed lower heavy metal concentrations than WS 1, while the lowest levels were detected in WS 2. Generally, moderate to very strong correlations existed among the metals in the scrapyard. In conclusion, the scrapyard was the epicenter of E-waste pollution primarily driven by human activities.

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Section: Spatial Distribution Of Heavy Metalssupporting

confidence: 87%

Assessment of heavy metal pollution resulting from informal E-wastes recycling in the Greater Accra Region of Ghana

Teye

Tetteh

2021

Preprint

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“…Comparably, Cr, Cu, and Pb concentrations were several times higher within the scrapyard than outside. This decreasing concentration of heavy metals with increasing distances from the scrapyard agrees with other studies, which explored the effect of increasing distance from the source on concentration levels of heavy metals [47][48][49].…”

Section: Discussionsupporting

confidence: 91%

Heavy Metal Pollution Resulting from Informal E-Waste Recycling in the Greater Accra Region of Ghana

Teye¹,

Tetteh²

2023

Heavy Metals - Recent Advances

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This study investigated concentrations and spatial distributions of four heavy metals: Cadmium (Cd), Chromium (Cr), Copper (Cu), and Lead (Pb) in the soil and drainage systems resulting from informal e-waste recycling at Ashaiman, a town in the Greater Accra Region of Ghana. Twenty-four soil samples were randomly taken from two open burning sites, and three water samples from a drainage that flows through the scrapyard were digested using standard wet digestion methods. An atomic absorption spectrophotometer (AAS) was used to analyze three replicates per sampling location for the heavy metals. The results revealed that the soil and drainage samples were polluted, with the metallic levels exceeding the World Health Organization (WHO), the Food and Agricultural Organization (FAO) of the United Nations, and the Environmental Protection Agency (EPA) of Ghana limits. Geoaccumulation index (Igeo), pollution load index (PLI), and contamination factor (CF) further confirmed the contamination of the scrapyard by the heavy metals. Spatial distribution maps showed elevated levels of the heavy metals at portions designated for open burning and disposal of e-waste materials. The research corroborates studies on pollution of the environment by informal e-waste activities and underscores the urgent need for policy implementation and law enforcement to halt further pollution.

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“…Waste is rejected materials from a manufacturing process that is useful to another process (Seah et al, 2023). Automobile junks are waste products from an auto-mechanic shop (Aisien et al, 2013;Jody et al, 2023). The junk comprises body parts of accident cars as well as the accessories that come from the internal parts of cars (Zhang & Chen, 2018).…”

Section: Introductionmentioning

confidence: 99%

The Impact of Auto Mechanic Junk on Soil and Groundwater Physicochemical Properties in Selected Sites in Port-Harcourt, Nige Delta, Nigeria

O.Numbere,

J.Obanye,

K.Ohia

2024

Ann Ecol Environ Sci

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The proliferation of auto-mechanic sites near houses within cities has made it necessary to study the impact of car assembly and disassembly activities on the adjoining soil and water. Thus, this study hypothesizes that pollutants from auto-mechanic junk (waste) will adversely affect the soil and water. We chose some auto mechanic sites at three locations in Port Harcourt. Three soil and water samples were randomly collected from the three sites (Ikokwu, Elekahia, and Mile 3 auto parts sites) within each location (n = 18) using soil augur and water jar, respectively. We sent the samples to the laboratory for the analysis of pH. Cadmium, Lead, Chromium, Iron, and Manganese using the atomic absorption spectrophotometric method (AAS) after digesting 2 g soil samples and immersing in nitric acid (HNO3). The ANOVA result reveals no significant difference in heavy metal concentration between the surface and sub-surface soils (F1, 28, 0.02, P = 0.88). Nevertheless, the surface soil has a higher concentration of metals than the sub-surface soils. Iron has the highest concentration in surface and sub-surface soils, followed by Chromium, Manganese, Lead, and Cadmium. At the same time, cadmium has the lowest concentration of all metals analyzed. The metallic components in the soil occur in the order Fe>Cr>Mn>Pb>Cd. The result shows that the concentration of Cr and Pb in the soil was above the World Bank Standard (WHO), while the concentration of heavy metals in drinking water was below the WHO standard. Iron has the highest concentration probably because of the ground geology and sedimentary formation of the parent soil. The most polluted site was Elekahiah, followed by Mile 3 and Ikokwu. Although there is a negative correlation between heavy metal concentration between soil and water (R2 = -0.22), there was a positive correlation of chemicals between surface and sub-surface soils (R2 = 0.99), which shows that migration of chemical components from surface to groundwater may be possible in future. The result implies that auto-mechanic junks can pose public health problems if the soil and groundwater are not constantly monitored.

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Levels of Heavy Metals in and Around Scrap Car Dumpsite at Uwelu, Nigeria

Cited by 8 publications

References 26 publications

Assessment of heavy metal pollution resulting from informal E-wastes recycling in the Greater Accra Region of Ghana

Assessment of heavy metal pollution resulting from informal E-wastes recycling in the Greater Accra Region of Ghana

Heavy Metal Pollution Resulting from Informal E-Waste Recycling in the Greater Accra Region of Ghana

The Impact of Auto Mechanic Junk on Soil and Groundwater Physicochemical Properties in Selected Sites in Port-Harcourt, Nige Delta, Nigeria

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