Mobility and transport behavior of lead in agricultural soils

Yeboah, Israel Boateng; Tuffour, Henry Oppong; Abubakari, Awudu; Melenya, Caleb; Bonsu, Mensah; Quansah, Charles; Adjei-Gyapong, Thomas

doi:10.1016/j.sciaf.2019.e00117

Cited by 9 publications

(8 citation statements)

References 20 publications

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“…Pb concentration in this study is higher when compared to concentrations detected in soils in the industrial area of Ho Chi Minh City in Vietnam [57]. Sewage disposal, disposal of wastes, use of fertilizers and pesticides and the exhaust of automobiles have been implicated to be other anthropogenic sources of Pb in the environment [58]. These activities are regularly being carried out in the research area, which could suggest the reason for the increased levels of Pb in the soils of the study area.…”

Section: Resultscontrasting

confidence: 53%

Heavy Metal Levels and Ecological Risk in Crude Oil-Contaminated Soils from Okpare-Olomu, Niger Delta, Nigeria

Bankole,

Ogunkeyede,

Agboro

et al. 2024

JEP

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Crude oil spills have inflicted extensive disruption upon the Niger Delta ecosystem, resulting in crop loss and severe environmental damage. Such spills exacerbate heavy metal concentration within soil due to the presence of metallic ions. The Okpare-Olomu community has borne the brunt of crude oil pollution from illicit bunkering, sabotage, and equipment malfunction. This study targets an evaluation of ecological hazards linked to heavy metals (HMs) in crude oil impacted agriculturally soils within Okpare-Olomu in Ughelli South LGA of Delta State. In this study, 24 topsoil samples were obtained from areas affected by crude oil pollution; the heavy metal content was evaluated through atomic absorption spectrometry. The concentration ranges for HMs (mg/kg) in soil were: 24.1 -23,174 (Cu); 0.54 -37.1 (Cd); 9.05 -54 (Cr); 12 -174 (Ni); 18.5 -8611 (Pb); and 148 -9078 (Zn) at a soil depth of 0 -15 cm. Notably, metal concentrations were recorded to be above permissible World Health Organization limits. Predominantly, Zn and Pb recorded higher heavy metal concentration when compared to other heavy metals analysed, notably at sampling points PT7 through PT24. Zinc and Pb contamination exhibited highly significant contamination factors, and contamination severity was evidenced across all sample points, signifying a grave risk level. Pollution load indices indicated pervasive extreme pollution levels.

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Section: Resultscontrasting

confidence: 53%

Heavy Metal Levels and Ecological Risk in Crude Oil-Contaminated Soils from Okpare-Olomu, Niger Delta, Nigeria

Bankole,

Ogunkeyede,

Agboro

et al. 2024

JEP

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“…Therefore, the composition of the lithologies hosting gold in the Pawara area is the main source of these metals in the soils except for Hg. However, mining and related anthropogenic activities promote weathering and leaching thereby rendering the mobility of heavy metals leading to contamination and pollution of the surface and subsurface environments, e.g., [95][96][97].…”

Section: Petrogenetic Significancementioning

confidence: 99%

Heavy Metal Contamination and Ecological Risk Assessment in Soils of the Pawara Gold Mining Area, Eastern Cameroon

Ismaila

Yannah

Wirmvem

et al. 2022

Earth

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Pawara area is a mining district in the eastern region of Cameroon. Mining in the area is generally artisanal and semi-mechanized, practiced by the local miners and immigrants from neighboring African countries and China. The lack of strict regulations and control of mining activities permits the miners to use illegal substances, especially Hg in gold separation. These expose the area to toxic and heavy metals pollution. This study highlights the source of heavy metals concentration in the Pawara soils and the potential adverse effects of Hg on gold separation to the environment and health. Three mining sites and one control site were investigated, namely Site A, Site B and Site C. The control Site 0 (background) is an area where no mining and agricultural activities have taken place. Soil samples were collected at depth of 20 cm, with six from each site (24 samples). Samples were analyzed for Al, Cd, Cr, Cu, Fe, Hg, Pb, Cd and Zn content using atomic absorption spectrophotometry in a graphite furnace. The metals, except for Fe, show high values for all three sites exceeding the background levels in the soils. Hg shows the highest concentration on Site A with a value of 1590 mg kg−1. Pb is highest on Site B with a concentration of 12,274 mg kg−1. The contamination degree was assessed with the help of contamination indices (Igeo—index of geo-accumulation; PLI—pollution load index; RI—potential ecological risk; Eri—ecological risk; Pi—single pollution index; CF—contamination factor) and all parameters show a high degree of contamination on all three sites compared to the control site. Hg, Pb, Cd, Cr and Cu as single pollutants show the highest ecological risk on Site A and Site B where intense mining is taking place. The absence of industrial and large-scale agricultural activities in the Pawara area, the nonexistence of contaminants on the control site and the presence of contaminants on Site C where farming is high and mining is low jointly show that the discharge of mine wastes onto the soils and stream channels are the main source of contaminants and potential pollutants of the Pawara ecological environment.

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“…Lead (Pb) is one of the most prevalent, persistent, and potentially toxic heavy metals found in soil (Kabata-Pendias 2000, Yeboah et al 2019). Besides the natural sources, input from the anthropogenic sources such as, rapid industrialization, economic growth, urbanization, population expansion (Muhammad et al 2021b), agricultural fertilizers, pesticides, wastewater irrigation (Khan et al 2021, mining operations and vehicle emissions enrich the soil Pb concentrations (Sisman et al 2002).…”

Section: Introductionmentioning

confidence: 99%

“…soil texture, and the most finer particle (clay fraction) is the primary responsible source for sorption of heavy metals (Ahmed et al 2019). Some studies were carried out worldwide on the interactions of Pb in soils (Ahmed et al 2019, Vytopilova et al 2015, Yeboah et al 2019, Zhang et al 2017), but no study has been conducted in Pakistan, nor in the study area, that assessed the interactions' (sorption-desorption) of Pb onto different textures, organic carbon (OC) contents, organic matter (OM) contents and pH, agricultural and non-agricultural soils. Therefore, the present study was designed with the purpose to: (i) investigate the sorption-desorption behavior of Pb in six different agricultural soils of Khyber Pakhtunkhwa province, Pakistan, (ii) assess the role of soil properties (texture, OC, and pH) in Pb retention, and (iii) identify the leaching potential of Pb from the selected agricultural soils.…”

Section: Introductionmentioning

confidence: 99%

“…Sorption is an important natural process that takes place at the sediment-water interface (Zhang et al 2017). Heavy metals that are released into aquifers by a variety of natural and anthropogenic sources, interact with various geosorbents through sorptive interactions (Yeboah et al 2019). As the sorption is a surface phenomenon, which strongly depends on surface properties, i.e.…”

Section: Introductionmentioning

confidence: 99%

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Sorption Behavior of Lead (Pb) onto Agricultural Soils of Khyber Pakhtunkhwa, ‎Pakistan: Potentials for Leaching

Ahmad

Khan

Gul

et al. 2021

Preprint

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Lead (Pb) contamination in soil and subsequent transport in groundwater poses severe threats to the food safety and human health. In current study, the effects of soil organic matter on sorption behavior of Pb onto six agricultural soils were investigated by batch sorption experiments and microscopic characterization. Results indicated that Pb sorption onto agricultural soils was dominated by the soil organic matter content and soil texture. The decrease of organic matter content reduced the sorption capacity of Pb onto agricultural soils. Based on soil texture, the Pb sorption was highest in clay soil and lowest in silt type of soil. The overall Pb sorption was in the order of clay > clay loam > silty clay loam ≈ loam > silt loam > silt. The sorption isotherms of measured aqueous and soil phase Pb concentrations were fit well with the linear sorption model. The organic carbon normalized partition coefficients (Log KOC) ranged from 2.90 to 2.99. Linear partition coefficient (Kd) values were positively correlated with the soil properties, such as clay (R2 =0.90), OC (R2 =0.94) and pH (R2 = 0.45); however, weak correlation was found between Kd and soil sand contents (R2 = 0.12). The leachability model showed potential risk of Pb leaching from silt soil with lowest organic matter content. The findings are of significant importance for understanding potential threats of Pb to the soil ecosystem, groundwater, plants, and humans.

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Mobility and transport behavior of lead in agricultural soils

Cited by 9 publications

References 20 publications

Heavy Metal Levels and Ecological Risk in Crude Oil-Contaminated Soils from Okpare-Olomu, Niger Delta, Nigeria

Heavy Metal Levels and Ecological Risk in Crude Oil-Contaminated Soils from Okpare-Olomu, Niger Delta, Nigeria

Heavy Metal Contamination and Ecological Risk Assessment in Soils of the Pawara Gold Mining Area, Eastern Cameroon

Sorption Behavior of Lead (Pb) onto Agricultural Soils of Khyber Pakhtunkhwa, ‎Pakistan: Potentials for Leaching

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