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Ver términos de la licenciaAlonso Durán, Ivonne, et al. (2024). How healthy are horticultural plants cultivated in urban gardens in polluted cities? The case of Mexico City. Revista Internacional de Contaminación Ambiental; Vol. 40, 2024; 203-214. Recuperado de https://repositorio.unam.mx/contenidos/4160542
Autor(es)
Alonso Durán, Ivonne; Hernández Álvarez, Elizabeth; Morton Bermea, Ofelia; Castro Larragoitia, Javier; Collazo Ortega, Margarita
Tipo
Artículo de Investigación
Área del conocimiento
Biología y Química
Título
How healthy are horticultural plants cultivated in urban gardens in polluted cities? The case of Mexico City
Fecha
2024-10-29
Resumen
Soil-to-plant metal(loid) accumulation has been highly evaluated recently due to its significant impact on human health. This study reports the concentrations of 15 metal(oid)s in four vegetables (tomato, onion, chili, and lettuce) cultivated in a greenhouse and three shade houses (two roofs of buildings and one in the UNAM Botanical Garden) in four locations in the metropolitan area of Mexico City. In this experiment, the contribution of metals and metalloids due to atmospheric deposition and irrigation may be negligible. Hence, the concentration of metals depends only on transfer from the soil. Soil analysis indicates that only vanadium in one location (a rooftop garden in the municipality of Venustiano Carranza) exceeds the permissible limits according to Mexican regulations. Lettuce shows the highest concentrations and transfer factors for most metals compared to the other vegetables studied. Transfer factors were exceptionally high for Cd (lettuce) and Hg (tomato), presenting values above 1. Concentrations of As, Cd, Hg, and Pb were compared with limit values recommended by different international agencies for vegetables. It was observed that, except for As, these values are exceeded in various vegetables harvested in this study. This information must be corroborated with more detailed studies evaluating the chemical species in which those metal(oid)s are present and identify the physical and chemical parameters of the soil that may have interfered with the soil-plant transfer factor.
Tema
metal(oid)s; urbanization; transference factor; food plants; metal(oid)s; urbanization; transference factor; food plants
Idioma
spa
ISSN
ISSN impreso: 0188-4999
