Metal pollution and human health risk assessment of soils and edible plants in farmlands around Enyigba lead-zinc mining site, Ebonyi State, Nigeria

Obasi, Nwogo Ajuka; Obasi, Stella Eberechukwu; Amadi, Solomon Okechukwu; Aloke, Chinyere; Aloh, Getrude Obinaju

doi:10.1007/s10661-020-08280-8

Cited by 10 publications

(4 citation statements)

References 34 publications

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“…The concentrations of the examined HMs decreased in order: active mining site > abandoned mining site > farmland > control site. The present study corroborated with previous studies that HM levels at active and abandoned mining sites were considerably higher than at other locations (Krishna et al, 2013;Ahmad and Al-Mahaqeri, 2014;Obasi et al, 2020). The levels of Hg, Ni, and Mn were found to be lower than their respective threshold limits of 2.00 and 2000.00 mg/kg, respectively, in both locations and seasons, which demonstrated that the soils in the studied locations were not contaminated with Hg and Mn.…”

Section: Concentrations Of Hms In the Soilsupporting

confidence: 92%

Source Distribution and Ecological Risk Assessments of Heavy Metals from the Soils of Riruwai Mining Area, North-Western Nigeria

Badamasi,

Dauda,

Suleiman

et al. 2024

indones. j. env. man. sus.

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Mining is an important global economic driver, contributing to human civilization’s advancement and foreign exchange revenues. However, it causes significant environmental contamination, particularly in developing nations with inadequate waste management and ineffective mining legislation. In the present study, the source distribution and ecological risk of heavy metals (HMs) from the soils of the mining area around Riruwai town, northern Nigeria, were assessed. Soil samples were obtained from active and abandoned mining sites, farmlands, and control sites and were analyzed for physicochemical characteristics and HM contents. The measured concentrations of HMs were used to evaluate the source distribution and ecological risks. The study’s findings indicated that, with the exception of Mn, Hg, and Ni, all HM concentrations were above threshold levels in all sample locations aside from the control sites. The results of the correlation analysis showed that there was a significant correlation between the HMs, indicating that they came from comparable origins. Principal component analysis and hierarchical cluster analysis results indicated that As, Cr, Hg, Ni, and Zn might originate from similar anthropogenic sources, possibly mining activities, while Cd, Mn, and Pb might come from natural sources (parent material). Results of an ecological risk assessment revealed that the soils from active and abandoned mining sites were severely polluted by HMs. The degree of pollution has begun to extend onto farmland, signifying a critical need for adequate HM pollution control in the study area.

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Section: Concentrations Of Hms In the Soilsupporting

confidence: 92%

Source Distribution and Ecological Risk Assessments of Heavy Metals from the Soils of Riruwai Mining Area, North-Western Nigeria

Badamasi,

Dauda,

Suleiman

et al. 2024

indones. j. env. man. sus.

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“…SF values for Pb, Ni, Cr, and Cd are 0.0085, 1.7, 0.5, and 0.38, respectively (Zhang, Li et al 2019, Obasi, Obasi et al 2020, Can, Ozyigit et al 2021). The permissible cancer risk limit is between 10 -6 and 10 -4 for a single or multi-element carcinogen.…”

Section: Carcinogenic Riskmentioning

confidence: 97%

Investigating the carcinogenic and non-carcinogenic health hazards of heavy metal ions in Spinacia oleracea grown in agricultural soil treated with biochar and humic acid

Moradi-Choghamarani,

Ghorbani

2024

Preprint

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This study addressed the bioaccumulation and human health risk among consumption of Spinacia oleracea grown in agricultural soil treated with humic acid and biochars. The biochars came from two local feedstocks of rice husk (RH) and sugar beet pulp (SBP) pyrolyzed at temperatures 300 and 600°C. The effect of soil treatment with biomass/biochar and humic acid in the accumulation of Heavy metals (HMs) in spinach leaves was considered under the controlled laboratory conditions. Optimum conditions for minimum accumulation of HMs were evaluated according to a central composite design (CCD) under the response surface method (RSM) by Design Expert software. Total concentrations of Cu, Cd, and Ni in soil and biomass/biochar were beyond acceptable standards worldwide. The concentrations of Zn, Cd, Pb, and Ni in spinach exceeded the safety threshold limit, and its consumption is not recommended. Results of the desirability test suggested the minimum values of biomass/biochar application rate due to their metal-contaminated nature. The minimum concentration of humic acid also was suggested due to its role in promoting pollutant bioavailability. Results showed that the treatment of metal-contaminated soil with HMs polluted-biochars fails to stabilize pollution. Also, polluted biochars increased the hazard indices for non-carcinogenic and carcinogenic diseases beyond the permissible levels.

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“…Lead contamination of sources of drinking water is a significant public health concern. Exposure to Pb in drinking water significantly affects public health especially in vulnerable groups (infants, young children, and pregnant women) [14,23]. Even at low doses, Pb exposure causes neurological damage and a range of health problems in developing children [24].…”

Section: Pb In Water Sourcesmentioning

confidence: 99%

“…While research is ongoing on bacteria as candidates for the bioremediation of heavy metals in mining sites [13], data on the exposure pathways, e.g., the ingestion of edible plants, dermal contact, and the inhalation of soil particles, will strengthen the scientific evidence in the territory [14]. So far, Pb in soils, floor dust, crops, and especially water seem to be major exposure pathways for blood Pb in the community exposed to mining [15].…”

Section: Introductionmentioning

confidence: 99%

Towards a One Health Assessment of Artisanal and Informal Mining in Benue State, Nigeria

Paul,

Frazzoli,

Orisakwe

2024

One Health 2023

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Metal pollution and human health risk assessment of soils and edible plants in farmlands around Enyigba lead-zinc mining site, Ebonyi State, Nigeria

Cited by 10 publications

References 34 publications

Source Distribution and Ecological Risk Assessments of Heavy Metals from the Soils of Riruwai Mining Area, North-Western Nigeria

Source Distribution and Ecological Risk Assessments of Heavy Metals from the Soils of Riruwai Mining Area, North-Western Nigeria

Investigating the carcinogenic and non-carcinogenic health hazards of heavy metal ions in Spinacia oleracea grown in agricultural soil treated with biochar and humic acid

Towards a One Health Assessment of Artisanal and Informal Mining in Benue State, Nigeria

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