Accumulation of potentially harmful elements in edible parts of vegetables grown on two different geological substrates in Zimbabwe

Meck, Maideyi; Mudimbu, Daina; Davies, T.C.

doi:10.1016/j.gexplo.2019.106392

Cited by 17 publications

(9 citation statements)

References 26 publications

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“…For tomato, BCF values lower than 1 were reported [85]. In contrast, Meck et al (2020) [86] found BCFs higher than 2 and 5 in tomato plants grown in granitic and greenstone substrates, respectively.…”

Section: Crop Bioconcentration Factor and Translocation Factormentioning

confidence: 91%

Lead Bioaccumulation and Translocation in Herbaceous Plants Grown in Urban and Peri-Urban Soil and the Potential Human Health Risk

et al. 2021

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Lead (Pb) contamination risks to crops grown in urban and peri-urban soils is a great concern that should be better evaluated to define the Pb maximum levels in soils for safe cultivation and to identify suitable strategies to remediate Pb polluted urban soils. The objective of this work was to evaluate the potential risk for human health from the ingestion of the edible portions of barley, castor bean, common bean, Indian mustard, sorghum, spinach, and tomato grown in an unpolluted soil (initial Pb content 32.6 mg kg−1) spiked with 0, 300, 650, 1000 mg Pb kg−1, respectively. The potential possibility of using these plants to phyto-remediate the soil of Pb was also assessed. Pot trials were conducted for two years (2008 and 2009). Results highlighted that all the investigated species were able to attain growth to maturity in high Pb spiked soil, although Pb influenced dry matter accumulation. Even in soils with low Pb concentrations, Pb accumulated the edible parts. Noteworthy, even in untreated control soils, all tested species revealed a Pb concentration in the edible parts that was higher than the safe limit set by FAO/WHO. None of the investigated species were considered Pb hyperaccumulators, but all were shown to be potentially suitable for phyto-stabilization.

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Section: Crop Bioconcentration Factor and Translocation Factormentioning

confidence: 91%

Lead Bioaccumulation and Translocation in Herbaceous Plants Grown in Urban and Peri-Urban Soil and the Potential Human Health Risk

et al. 2021

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“…The "gold belt" stretches from the area around Harare in the northeast to the area surrounding Bulawayo in the southwest. Throughout this area, including the Midlands Province in the central part of the country where the SHINE trials were conducted, gold, chromium, and other base metal mining is prevalent (M. L. Meck, Mudimbu, & Davies, 2020;Nharingo, Ndumo, & Moyo, 2015). Mine tailings are "hotspots" for spreading environmental contamination by arsenic, lead, copper, and mercury (van Straaten, 2000).…”

Section: Mining-related Pollutionmentioning

confidence: 99%

“…Lead, zinc, and nickel contamination of the Mupfre River in central Zimbabwe has been attributed to mine dumps (Ravengai, Love, Mabvira-Meck, Musiwa, & Moyce, 2005). A recent study indicated potential human health risks due to ingestion of staple vegetables grown around Kadoma in central Zimbabwe having arsenic, cadmium, and lead levels above FAO/WHO Codex maximum permissible limits (MPLs) (M. L. Meck et al, 2020). For example, tomatoes contained lead concentrations 360-1,400 times MPLs, as well as cadmium in excess of the MPL.…”

Section: Mining-related Pollutionmentioning

confidence: 99%

“…For example, tomatoes contained lead concentrations 360-1,400 times MPLs, as well as cadmium in excess of the MPL. All vegetables tested would expose communities to dangerous levels of lead (M. L. Meck et al, 2020). Arsenic concentrations were well above the MPL in the tomatoes, pumpkin leaves, cabbage, and okra (M. L. Meck et al, 2020).…”

Section: Mining-related Pollutionmentioning

confidence: 99%

“…All vegetables tested would expose communities to dangerous levels of lead (M. L. Meck et al, 2020). Arsenic concentrations were well above the MPL in the tomatoes, pumpkin leaves, cabbage, and okra (M. L. Meck et al, 2020).…”

Section: Mining-related Pollutionmentioning

confidence: 99%

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The role of chemical exposures in reducing the effectiveness of water–sanitation–hygiene interventions in Bangladesh, Kenya, and Zimbabwe

Kearns

2020

WIREs Water

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The sustainable success of water, sanitation, and hygiene (WASH) interventions to reduce waterborne disease and promote public health in low‐income regions is uncertain. Recent large randomized controlled trials in Bangladesh, Kenya, and Zimbabwe revealed that traditional household WASH interventions are unlikely to reduce diarrhea or improve linear growth (i.e., reduce stunting) in infants and children—two important indicators of the effectiveness of WASH interventions. A possible factor contributing to the null results is that traditional WASH interventions control microbial pathogens but do not remove chemical toxicants. Exposure to many organic and inorganic chemical toxicants is associated with diarrheal symptoms, as well as with preterm birth and stunting. Many chemical toxicants have deleterious effects on the immune system, impairing the body's response to infectious diseases, and reducing the effectiveness of vaccinations. Globalization has led to rapid and largely unregulated import, production, use, and disposal without adequate treatment of large quantities of hazardous chemicals throughout the developing world, with profound effects on the environment and human health. Literature evidence from the past 10 to 15 years on putative and demonstrated chemical exposures in Bangladesh, Kenya, and Zimbabwe and the regions within the countries where the large WASH trials took place supports potential contribution(s) from chemical toxicants in the failure of traditional WASH interventions to relieve diarrhea and stunting. Mitigating exposures to organic and inorganic chemical immunotoxins through drinking water and other routes is likely to be a necessary‐but‐insufficient criterion for the sustainable success of WASH interventions. This article is categorized under: Engineering Water > Water, Health, and Sanitation Engineering Water > Sustainable Engineering of Water

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Transfer of Arsenic in Food Chain Through Groundwater Irrigation: A Threat to Food Safety and Human Health

Manhokwe,

Nyanhete,

Mugadza

et al. 2024

Arsenic Remediation of Food and Water

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Accumulation of potentially harmful elements in edible parts of vegetables grown on two different geological substrates in Zimbabwe

Cited by 17 publications

References 26 publications

Lead Bioaccumulation and Translocation in Herbaceous Plants Grown in Urban and Peri-Urban Soil and the Potential Human Health Risk

Lead Bioaccumulation and Translocation in Herbaceous Plants Grown in Urban and Peri-Urban Soil and the Potential Human Health Risk

The role of chemical exposures in reducing the effectiveness of water–sanitation–hygiene interventions in Bangladesh, Kenya, and Zimbabwe

Transfer of Arsenic in Food Chain Through Groundwater Irrigation: A Threat to Food Safety and Human Health

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