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Ver términos de la licenciaNarváez Romero, Carlos, et al. (2024). Potencial del arbusto Lantana camara L. (Verbenaceae) para la fitoestabilización y volatilización de mercurio. Revista Internacional de Contaminación Ambiental; Vol. 40, 2024; 95-103. Recuperado de https://repositorio.unam.mx/contenidos/4161080
Autor(es)
Narváez Romero, Carlos; Kalinhoff Rojas, Carolina; Sánchez Rodríguez, Aminael
Tipo
Artículo de Investigación
Área del conocimiento
Biología y Química
Título
Potencial del arbusto Lantana camara L. (Verbenaceae) para la fitoestabilización y volatilización de mercurio
Fecha
2024-11-21
Resumen
Mercury (Hg) is the most harmful heavy metal for living beings due to its high toxicity, persistence and bioaugmentation in the food web. L. camara has been considered as a promising plant for the phytoremediation of different metals, but its response to Hg has not been characterized. The objective of this study was to evaluate the effectiveness of L. camara to bioaccumulate, transfer and volatilize Hg, in artificially contaminated soils (1.0 and 8.0 mg/kg of Hg). After two months of treatment, the dry weight was measured, and the Hg present in stems, roots, leaves and atmosphere was quantified by means of atomic absorption spectroscopy. Volatilized Hg was captured in hermetic chambers with continuous air flow, connected to a trap solution (5 % KMnO4 dissolved in H2SO4). The translocation factor was <1 and the bioaccumulation factor was >10 in both treatments. High mercury volatilized Hgº values in soil solution indicate that approximately 7.1 µg/g plant/day can be released into the atmosphere. Our results indicate that L. camara accumulates Hg mainly in the root, showing potential for phytostabilization; but its high volatilization rates point towards a more restricted use of this species in phytoremediation strategies.
Tema
Hg; contaminación; bioacumulación; translocación; fitovolatilización
Idioma
spa
ISSN
ISSN impreso: 0188-4999
