Identification of heavy metals source within selected active dumpsites in southeastern Nigeria

Onwukeme, Valentine Ifenna; Eze, Victor Chukwuemeka

doi:10.5620/eaht.2021008

Cited by 26 publications

(19 citation statements)

References 21 publications

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“…The instrument setting and operational conditions were done in accordance with the manufacturers' specifications. Following the same protocol as the samples, standard reference material (SRM 2783) filter from National Institute of Standards and Technology (NIST) was analysed for elemental concentrations and compared with their certified values to validate the analyses and results were found within ±5% of the certified values [19,23,24].…”

Section: Methods Of Heavy Metal Analysis Of Water Samplesmentioning

confidence: 99%

Determination of the levels of heavy metals and physicochemical properties of borehole water within selected mining sites in Ebonyi State, Nigeria

2022

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The level of heavy metals (Pb, Cd, As, Cr, Ni, Co, Zn) and physicochemical parameters in borehole water sources within selected mining sites in Ebonyi State, Nigeria were determined using FS240AA Atomic Absorption Spectrophotometer (AAS) according to the method of American Public Health Association (APHA). Water samples were collected from Enyigba mining site, Ikwo mining site, Ameri Amekamining site, Izza mining site, Mkpume Akwatakwa mining site and Mpume Akwaokuku mining sites. Composite water samples were collected within the mining locales and 500 metres away from the mining locations using two liters plastic jars. Similarly, the control samples were taken from Abakaliki (about 15 km away from mining area) where there was no evidence of mining activity. A total of 14 sub-samples were collected for this study. Generally, the levels of heavy metals in the borehole water samples were higher than the values recommended by the World Health Organization (WHO). This however suggests a possible mobility of the metals from mining sites into the groundwater sources through leaching. The findings from this study have revealed the need to purify borehole water within mining areas prior to industrial and domestic use.

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Section: Methods Of Heavy Metal Analysis Of Water Samplesmentioning

confidence: 99%

Determination of the levels of heavy metals and physicochemical properties of borehole water within selected mining sites in Ebonyi State, Nigeria

2022

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“…In dry season, the following group of metals showed significant and positive relationships Cd/Fe, Cd/Mn, Pb/Fe, Pb/Cu, Pb/Ni, Fe/Ni, Cu/Zn, Cu/Ni and Zn/Ni while in rainy season, Fe with Cu/Zn/Mn/Ni, Cu/Mn, Zn/Ni, Zn/Mn, and Mn/Ni (Table 7). Some studies have obtained similar results for some of the metal relationships in sediment [28][29][30]. Two components of metals were extracted; PC1 had 67.981 % and 72.169 % of total variance in dry and rainy season respectively while total variance was 100 % for PC2 in both seasons respectively.…”

Section: Sedimentmentioning

confidence: 72%

Heavy metal analysis and health risk assessment of the surface irrigation water and sediment of Nimo vegetable growing site, Anambra State, Southeastern Nigeria

Nnaji¹,

Arinze²

2022

Health Environ

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Heavy metals pollution has been a great concern generally due to their toxicity and persistence in environment. This study evaluated the level of pollution and health risks of heavy metals in surface irrigation water used for vegetable cultivation and sediment from Nimo vegetable farm. Three samples each from three different sampling points for water and sediment were collected in dry and rainy seasons and analyzed for Pb, Cd, Mn, Fe, Zn, Cu and Ni concentrations using Atomic Absorption Spectrophotometer. The result showed that heavy metal concentrations in the irrigation water ranged from 0.004 to 0.147 mg/l, 0.119 to 0.773 mg/l, 0.014 to 1.644 mg/l, 0.006 to 0.056 mg/l, 0.009 to 0.576 mg/l, 0.040 to 0.181 mg/l, 0.082 to 0.147 mg/l, for Cd, Pb, Fe, Cu, Zn, Mn, and Ni respectively for the different seasons. In sediment, Cu had the lowest mean concentrations of 0.02±0.01 mg/l while iron had the highest mean concentrations of 6.86±3.06 mg/l. The obtained results were compared with Food and Agriculture Organization and the Department of Petroleum Resources standards for surface irrigation water and sediment respectively. The heavy metal distribution in water was Fe > Pb > Mn > Cd > Ni > Cu = Zn in dry and Zn > Fe > Pb > Ni > Mn > Cu > Cd rainy seasons respectively. Overall, the heavy metals level in the water and sediment were low when compared to the standards. Computed contamination factors and pollution load index showed that the sediment were not polluted while in water, only Cu, Zn, Mn and Fe (in rainy season) showed low contamination, while Ni, Pb and Cd had moderate to very high contamination in both seasons. Hazard Index values for the heavy metals in adults and children via the water and sediment of this study is less than one (HI < 1). Hence the water and sediment from this site poses no health risk to the public. Correlation analysis for metals in water and sediment showed significant and positive relationships amongst the metals which indicated that the most of the metals originate from the same source while few originate from mixed sources mainly from agricultural activities, atmospheric deposition and runoff into the irrigation water.

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“…Air contaminants are generated in the dumpsites areas due to numerous reasons like open burning, uncaptured landfill gases, gases from the decomposition of natural matter, dust from poorly covered landfills, etc. [1]. The common dumpsite contaminants include particulate matter (PM), and other gaseous contaminants such as NOx, COx, and PAH [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

“…[1]. The common dumpsite contaminants include particulate matter (PM), and other gaseous contaminants such as NOx, COx, and PAH [1][2][3]. Whilst the particulate contaminants are usually released into the surroundings, they most often cause severe effects on the environment with associated adverse human health consequences.…”

Section: Introductionmentioning

confidence: 99%

Particulate matter exposure and non-cancerous inhalation health risk assessment of major dumpsites of Owerri metropolis, Nigeria

Opara

Akaolisa

Akakuru

et al. 2021

Environ Anal Health Toxicol

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Numerous particulates are released from the dumpsites in Owerri metropolis and later dispersed to other areas in the environment where they cause adverse health challenges to the inhabitants. To analyze the PM concentration, field measurements were carried out at seven major dumpsites in the Owerri Metropolis. Estimates of the possible health risks as the result of exposure to airborne particulate matter (PM2.5, PM10, etc.) were performed using the US Environmental Protection Agency human health risk assessment framework. A scenario assessment approach in which normal exposure and worst-case scenario were adopted for acute and chronic exposure periods for infants, children, and adults. The concentrations of PM 2.5 which ranged from 122.30-501.76 μg/m3 at the dumpsites exceeded the WHO 24hr annual mean maximum exposure limit. The Nigerian National Ambient Air Quality Standard allowable limit for PM10 was exceeded by most of the dumpsites. Hazard quotient > 1 was exceeded for PM 2.5 by nearly all dumpsites and is likely to cause health challenges. The results showed that under monthly conditions, both PM2.5 and PM10 concentration levels at the dumpsites have the potential to cause adverse health effects when for infants, children, and adults on acute or chronic bases. Actions should be taken to regulate such PM exposure and to raise public awareness for the inhabitants of the affected areas. In conclusion, regular monitoring is therefore needed to decrease the ambient particulate matter (PM) concentrations in the study area.

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Identification of heavy metals source within selected active dumpsites in southeastern Nigeria

Cited by 26 publications

References 21 publications

Determination of the levels of heavy metals and physicochemical properties of borehole water within selected mining sites in Ebonyi State, Nigeria

Determination of the levels of heavy metals and physicochemical properties of borehole water within selected mining sites in Ebonyi State, Nigeria

Heavy metal analysis and health risk assessment of the surface irrigation water and sediment of Nimo vegetable growing site, Anambra State, Southeastern Nigeria

Particulate matter exposure and non-cancerous inhalation health risk assessment of major dumpsites of Owerri metropolis, Nigeria

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