Urban farming as a possible source of trace metals in human diets

Rapid industrialisation and urbanisation have greatly increased the concentrations of trace metals as pollutants in the urban environment. These pollutants (trace metals) are more likely to have an adverse effect on peri-urban agriculture, which is now becoming a permanent feature of the landscape o...

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Bibliographic Details
Published in:South African Journal of Science 2016-01, Vol.112 (1/2), p.1-1
Main Authors: Olowoyo, Joshua O, Lion, Gladness N
Format: Article
Language:English
Subjects:
Cadmium
Contamination
Developing countries
Environmental aspects
Farming
Food contamination & poisoning
Greens, Edible
Health aspects
Health risks
human health
LDCs
Metal concentrations
Metals
Micropollutants
Physiological aspects
Pollutants
pollution
soil
Soil contamination
Studies
Trace elements
Trace metals
Urban agriculture
Urban areas
Urban environments
Urban farming
Urbanization
Vegetables
Zinc
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Summary:Rapid industrialisation and urbanisation have greatly increased the concentrations of trace metals as pollutants in the urban environment. These pollutants (trace metals) are more likely to have an adverse effect on peri-urban agriculture, which is now becoming a permanent feature of the landscape of many urban cities in the world. This review reports on the concentrations of trace metals in crops, including leafy vegetables harvested from different urban areas, thus highlighting the presence of trace metals in leafy vegetables. Various pathways of uptake of trace metals by leafy vegetables, such as the foliar and roots, and possible health risks associated with urban faming are discussed, and various morphological and physiological impacts of trace metals in leafy vegetables are described. Defensive mechanisms and positive aspects of trace metals in plants are also highlighted.
ISSN:0038-2353
1996-7489
DOI:10.17159/sajs.2016/20140444