Influence of Human Activities and Land Use on Heavy Metal Concentrations in Irrigated Vegetables in Ghana and Their Health Implications

Mensah, Ebenezer; Kyei‐Baffour, Nicholas; Ofori, Emmanuel; Obeng, George Yaw

doi:10.1007/978-1-4020-9139-1_2

Cited by 39 publications

(29 citation statements)

References 13 publications

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“…So, the soil found safe for growing vegetables. But metal concentrations in vegetables from 3 areas were found exceeding the permissible limits of Pb were exceeding the limits as reported by Mensah et al (2009) i.e., the safer limits for Ni, Cu and Pb in the vegetables are 67.90, 73.30 and 0.30 mg kg -1 . Moreover, vegetables samples collected from the collective 12 (7 sewage and 5 canal irrigated sites) were having the higher concentrations of Pb.…”

Section: Metal Concentration In Vegetable Edible Partsmentioning

confidence: 57%

Metal Contamination of Canal Versus Sewage Water Irrigated Vegetables in Metropolitan Area of Sargodha, Pakistan

Shahzad

Ahmad

Farooqi

et al. 2021

Preprint

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The reduction in the fresh water supply and increase in the domestic effluents with increase in population and urbanization in the Pakistan force the farmers to use untreated sewage water for the irrigation purposes. Besides high nutrient content Sewage water also have source of metal contamination in the food chain. The present field study was conducted to compare the nickel (Ni), copper (Cu) and lead (Pb) contamination in vegetables grown on soils irrigated with sewage water and canal water in Sargodha, Punjab, Pakistan. The Ni, Cu and Pb contamination was assessed using soil quality indices i.e., contamination factor (CF), metal translocation factor (MTF), pollution load index (PLI), geo-accumulation index (Igeo) and ecological risk index (ERI) were calculated in the collected samples. The physico-chemical properties of soil and water samples were determined. Based on the results, it was revealed that sewage irrigated areas were at higher risks of metals contamination compared to canal irrigated areas. From the studied metals, Pb showed highest contamination potential based on the soil quality indices. In sewage irrigated sites, metal concentrations were found higher in edible parts of the vegetables confirming that sewage water contains and supply more metals than canal irrigated water and pose more health and ecological risks.

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Section: Metal Concentration In Vegetable Edible Partsmentioning

confidence: 57%

Metal Contamination of Canal Versus Sewage Water Irrigated Vegetables in Metropolitan Area of Sargodha, Pakistan

Shahzad

Ahmad

Farooqi

et al. 2021

Preprint

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“…The maximum permitted concentration limits of metals for plant material, according to the FAO, establish standards for Cd (0.2 mg/kg) and Zn (99.4 mg/kg) [ 22 ].…”

Section: Resultsmentioning

confidence: 99%

Sustainability of Cocoa (Theobroma cacao) Cultivation in the Mining District of Ponce Enríquez: A Trace Metal Approach

Ramos

Ruales

Sakakibara

et al. 2022

IJERPH

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Historically, cocoa (Theobroma cacao) has been one of Ecuador’s most important export crops. In the Ponce Enriquez district, artisanal and small gold mining (ASGM), and quarrying account for 42% of economic activities, while agriculture and livestock farming account for 30%, making the analysis of their synergy and interaction key to understanding the long term viability of the different activities. In this study, we evaluated the concentration of potentially toxic metals in different parts of the cocoa plant and fruit, in relation to mining activities within the area. Gold extraction generates pollution, including potentially toxic metals such as mercury (Hg), cadmium (Cd), arsenic (As), copper (Cu), lead (Pb) and zinc (Zn). In order to understand the mobility of these metals within the cocoa plant and fruit, the analysis was conducted separately for leaves, pod, husk and cocoa bean. Concentrations of the target metals in the different plant parts and soil were measured using ICP-MS, and the mobility and risk factors were calculated using the transfer factor (TF) and the risk ratio (HQ). The results suggest that Zn, Cd and Cu are indeed moving from the soil to cocoa leaves and beans. Furthermore, the results show that the concentrations of toxic metals in the different parts of the cocoa fruit and plant, particularly in the cocoa bean, which is used for chocolate manufacture, are not higher than those regulated by FAO food standards, as is the case of Cd, which is limited to 0.2 mg Cd/kg and in the samples analyzed does not exceed this limit. Even though the concentration of these metals does not exceed the safety standard, the presence of these potentially hazardous metals, and the fact they are absorbed by this important local crop, are worrying for the long-term sustainability of cocoa cultivation in the area. Therefore, it is fundamental to monitor the local environment, understanding the distribution of heavy metal pollution, and work with the local authorities in landscape management to minimize the exposure of crops to ASGM pollution.

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“…Notably, many food crops and vegetables have the high ability to uptake and distribute PTE in their organs in urban, peri-urban, and rural areas, e.g., Rumex alpinus, Brassica oleracea var. capitata, and Daucus carota (see Jungová et al 2022;Mensah et al 2009). Even though Pb shows restrictive transport of to shot due to apoplastic blockage in the root, e.g., the Casparian barrier (Dogan et al 2018), the leaf content was higher than the allowable limit.…”

Section: Discussionmentioning

confidence: 99%

Are anthropogenic soils from dumpsites suitable for arable fields? Evaluation of soil fertility and biomass response to elements

Asare

2022

Preprint

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Background and purpose The fertility of anthropogenic soils developed from dumpsites used for arable fields is not well-studied. The study aimed to evaluate the fertility of soils from an abandoned dumpsite in Awotan, Nigeria, by measurable indicators and assess the bioaccessibility of elements of identified plant species. Methods The study adopted multi-analytical approaches to determine the signatures of the soils and further parameterized the bioaccessibility of elements to plants. Results The comparatively high content of Ca and Na in the anthropogenic soil contributed to the slightly alkaline soil reaction against the slightly acidic control. The high amount of organic matter is well-indicated by the enrichment of organic C and N in the anthropogenic soil. Waste deposition significantly contributed to the high accumulation of macronutrients (P, Ca, K, S) and micronutrients (Mn, Na, Fe) sufficient for maximum plant growth and yields, with an adequate C/N ratio supporting effective mineralization. The high cation exchange capacity of the anthropogenic soil contributed to cations binding. Indiscriminate deposition resulted in a high accumulation of potentially toxic elements (PTEs; Cu, Zn, As, Cd, Pb) above permissible limits in agricultural soils following WHO limits. Potential effects on lives are evident by the high PTEs accumulation in roots and leaves of Chromolaena odorata, Saccopetalum tectonum, Passiflora foetida, and Senna siamea. These plant species exhibited various PTEs accumulation, especially excluding Cd and Pb. Conclusion Although anthropogenic soils remained fertile, the bioaccessibility of PTEs by plants indicates potential threats to consumers of crops and herbs produced from such sites.

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Influence of Human Activities and Land Use on Heavy Metal Concentrations in Irrigated Vegetables in Ghana and Their Health Implications

Cited by 39 publications

References 13 publications

Metal Contamination of Canal Versus Sewage Water Irrigated Vegetables in Metropolitan Area of Sargodha, Pakistan

Metal Contamination of Canal Versus Sewage Water Irrigated Vegetables in Metropolitan Area of Sargodha, Pakistan

Sustainability of Cocoa (Theobroma cacao) Cultivation in the Mining District of Ponce Enríquez: A Trace Metal Approach

Are anthropogenic soils from dumpsites suitable for arable fields? Evaluation of soil fertility and biomass response to elements

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