Urban Market Gardening in Africa: Foliar Uptake of Metal(loid)s and Their Bioaccessibility in Vegetables; Implications in Terms of Health Risks

Uzu, Gaëlle; Schreck, Eva; Xiong, Tiantian; Macouin, Mélina; Lévèque, Thibaut; Fayomi, Benjamin; Dumat, Camille

doi:10.1007/s11270-014-2185-5

Cited by 31 publications

(10 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…While our results confirm that evergreen trees show promise in this regard, it is important to critically evaluate the variety of additional factors involved in planned urban forestation (Escobedo et al, 2011; Grote et al, 2016). Conversely, consumption of produce grown in polluted urban environments in personal or community gardens may result in increased consumption of toxic metals and additional health concerns associated with atmospheric pollutant contamination (Uzu et al, 2014). The results of the study presented here support the conclusion that heavy metal contamination in the tissues of urban produce is a function of both proximity to roadways (Antisari et al, 2015) and soil contamination (Cooper et al, 2020).…”

Section: Discussionmentioning

confidence: 99%

Evergreen Needle Magnetization as a Proxy for Particulate Matter Pollution in Urban Environments

et al. 2020

View full text Add to dashboard Cite

We test the use of magnetic measurements of evergreen needles as a proxy for particulate matter pollution in Salt Lake City, Utah. Measurements of saturation isothermal remanent magnetization indicate needle magnetization increases with increased air pollution. Needle magnetization shows a high degree of spatial variability with the largest increases in magnetization near roadways. Results from our magnetic measurements are corroborated by scanning electron microscopy of needle surfaces and by inductively coupled plasma mass spectrometry of metal concentrations in residues collected from sampled needles. Low-temperature magnetic analysis suggests the presence of small (<20 nm) partially oxidized magnetite particles on needles collected adjacent to a major roadway. Magnetization may be a low-cost proxy for certain metal concentrations (including lead) during periods of increased particulate pollution. The spatial resolution of our method appears capable of resolving changes in ambient particulate matter pollution on the scale of tens to hundreds of meters. Questions remain regarding the timescales over which evergreen needles retain particulate matter accumulated during atmospheric inversion events in Salt Lake City. Results presented here corroborate previous studies that found needle magnetization is a fast, cost-effective measure of particulate matter pollution. This method has the potential to provide high spatial resolution maps of biomagnetically monitored particulate matter in polluted urban environments year-round.

show abstract

Section: Discussionmentioning

confidence: 99%

Evergreen Needle Magnetization as a Proxy for Particulate Matter Pollution in Urban Environments

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Human exposure to heavy metals can occur through several pathways (Uzu et al 2014), but the main way remains food consumption (Xiong et al 2014c). Human exposure and the health impacts of cassava ingestion may essentially depend on the mode (roots, powder, etc.)…”

Section: Risks Of Consuming Cassava Grown In Polluted Areas and Naturmentioning

confidence: 99%

“…In urban areas, however, atmospheric and soil pollutions are often observed, mainly due to the proximity of roads and agricultural and industrial activities which have been going on for centuries (Shahid et al 2012;Mitchell et al 2014). Indeed, many pollutants can flow or accumulate in the atmosphere, water, soil, and finally vegetables (Uzu et al 2014;Pierart et al 2015;Clinard et al 2015). Marketed plants are regulated in Europe with respect to some targeted inorganic pollutants such as Pb, Cd, and Hg (EC, no.…”

Section: Metalmentioning

confidence: 99%

A socio-scientific analysis of the environmental and health benefits as well as potential risks of cassava production and consumption

Mombo

Dumat

Shahid

et al. 2016

Environ Sci Pollut Res

View full text Add to dashboard Cite

Due to its high adaptability, cassava (Manihot esculenta Crantz) is one of the world's most cultivated and consumed plants after maize and rice. However, there are relatively few scientific studies on this important crop. The objective of this review was therefore to summarize and discuss the available information on cassava cropping in order to promote sustainable practices in terms of production and consumption. Cassava cultivation has been expanding recently at the global scale and is widely consumed in most regions of South America, Africa, and Asia. However, it is also characterized by the presence in its roots of potentially toxic hydrocyanic acid. Furthermore, cassava can also absorb pollutants as it is currently cultivated near roads or factories and generally without consideration for potential sources of soil, water, or atmospheric pollution. Careful washing, peeling, and adequate preparation before eating are therefore crucial steps for reducing human exposure to both environmental pollutants and natural hydrocyanic acid. At present, there is not enough precise data available on this staple food crop. To improve our knowledge on the nutritive benefits versus health risks associated with cassava consumption, further research is necessary to compare cassava cultivars and precisely study the influence of preparation methods.

show abstract

“…However, ecosystem pollution is often observed in urban areas mainly due to the proximity to roads, agricultural and present-day or centuries-old industrial activities (Douay et al 2008;Mitchell et al 2014). Indeed, many chemicals can flow or accumulate in the atmosphere, water, and soil of urban gardens (Schwartz 2013), and finally consumed vegetables (Uzu et al 2014;Clinard et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Collective conceptualization and management of risk for arsenic pollution in urban community gardens

Dumat

Pierart

Shahid

et al. 2018

Rev Agric Food Environ Stud

Self Cite

View full text Add to dashboard Cite

At the global scale, an increase in urban gardening activities is being observed and the question of produce quality is therefore regularly investigated in relation to pollutant transfer in the environment. The scientific question investigated in the present study was in what way is the presence of arsenic pollution detected in community gardens a public problem and how would each party take ownership of this issue? An interdisciplinary and participative research study BJASSUR^based on both agronomy and risk assessments was conducted in a French collective garden impacted by arsenic pollution in the well water used for irrigation. Gardener surveys and public meetings examined the gardeners' representations of risk and research solutions for sustainable site management. The theoretical framework of Gilbert which applies a social construction of risk was used. Without an official arsenic limit concentration for vegetables produced in the gardens, a collective risk construction and management process took place. Arsenic total and human bioaccessible concentrations were measured in both vegetables and soil and compared to reference data from a national database to assess the level of health risk. Vegetable quantities produced were obtained in the field from Rev Agric Food Environ Stud

show abstract

Urban Market Gardening in Africa: Foliar Uptake of Metal(loid)s and Their Bioaccessibility in Vegetables; Implications in Terms of Health Risks

Cited by 31 publications

References 42 publications

Evergreen Needle Magnetization as a Proxy for Particulate Matter Pollution in Urban Environments

Evergreen Needle Magnetization as a Proxy for Particulate Matter Pollution in Urban Environments

A socio-scientific analysis of the environmental and health benefits as well as potential risks of cassava production and consumption

Collective conceptualization and management of risk for arsenic pollution in urban community gardens

Contact Info

Product

Resources

About