Contenido de metales en Cancer polyodon (Crustacea: Decapoda) en un sistema de bahias del norte de Chile (27°S)

Abstract

RESUMEN. El contenido de Zn, Cu, Cd, Pb, Fe, Al y Ni fue analizado en tejido muscular de Cancer polyodon en las bahías de Caldera, Calderilla, Inglesa y Salada (Atacama, Chile). Los resultados fueron comparados con estudios similares desarrollados por otros autores y la normativa de carácter nacional e internacional relacionada con el contenido de metales pesados en crustáceos para consumo humano. El orden de abundancia de los metales analizados en C. polyodon fue Cd<Ni<Cu<Pb<Zn<Fe<Al. Las concentraciones medias de Cd, Pb, Fe y Al fueron más elevadas en bahía Salada, mientras que el Cu y Ni lo fue en bahía Caldera y el Zn en bahía Inglesa. Todos los metales, con excepción de Cu, presentaron diferencias significativas (P < 0,05) entre las bahías analizadas. De los siete metales analizados en C. polyodon las concentraciones de Pb, Fe y Al presentaron niveles más elevados que los reportados para otros sistemas costeros. Las concentraciones de Cu (excepto bahía Calderilla), Cd (excepto bahías Caldera e Inglesa) y Pb sobrepasaron los valores permitidos por la normativa nacional e internacional, lo que sugiere que la presencia de estos metales en C. polydon representa un potencial riesgo para la salud humana. Palabras clave: Cancer polyodon, metales, contaminación, Atacama norte de Chile. Metal contents in Cancer polyodon (Crustacea: Decapoda) in a bay system of northern Chile (27°S)ABSTRACT. The contents of Zn, Cu, Cd, Pb, Fe, Al and Ni in the muscle tissue of Cancer polyodon from Caldera, Calderilla, Inglesa, and Salada bays (Atacama, Chile) were quantified. The results were compared with similar studies by other authors and with the national and international regulatory standards for heavy metal contents in crustaceans for human consumption. In increasing order, the metal contents in C. polyodon were: Cd< Ni< Cu< Pb< Zn<Fe< Al. Mean concentrations of Cd, Pb, Fe and Al were highest in Salada Bay: Cu and Ni were highest in Caldera Bay; and Zn was highest in Inglesa Bay. All the metals except Cu differed significantly (P < 0.05) among the analyzed bays. Of the seven metals analyzed, Pb, Fe, and Al concentrations in C. polyodon were higher than those reported for other coastal systems. Concentrations of Cu (except Calderilla), Cd (except Caldera and Inglesa), and Pb exceeded the threshold values indicated by the national and international standards, suggesting that the presence of these metals in C. polyodon represents a potential risk for human health.

Contenido de metales en sedimentos y en Emerita analoga (Stimpson, 1857), en bahia Mejillones del Sur, Chile

“…2), pueden ser fuentes de emisión de este metal. La concentración de Zn en E. analoga presentó una concentración promedio de 22,6 mg kg -1 , que es menor al compararla con los registrados por Ahumada et al (1994), Chen et al (2005), Boada et al (2007), Castillo & Valdés (2011) y Valdés et al (2014 (Tabla 5), estos resultados indicarían que E. analoga estaría acumulando metales según su biodisponibilidad y que existen procesos de bioacumulación de Zn (Fig. 5).…”

Data on metal accumulation in the tails of the lizard Microlophus atacamensis in a coastal zone of the Atacama Desert, northern Chile: A non-destructive biomonitoring tool for heavy metal pollution

“…Heavy metals (Lead, Copper, Nickel, Zinc and Cadmium): For the quantification of metals per site the methodology described by Castillo and Valdés [11] was followed for the analytical pre-treatment on putative preys and tails ( Table 1 ). The content of metals in soil was measured in the fraction <63 μm, after drying the samples at 40°C.…”

Cu, Pb, and Zn content in sediments and benthic organisms from San Jorge Bay (northern Chile): Accumulation and biotransference in subtidal coastal systems

“…In Chile, however, the biomagnification of metals is a problem that has not been addressed from a scientific point of view, nor has it been considered to establish quality standards for marine resources destined for human consumption. A few studies published in recent years report metal levels in marine organisms (Díaz et al 2001, Castillo and Valdés 2011, Calderón and Valdés 2012, Castro and Valdés 2012), but to the best of our knowledge there are no studies that describe the process whereby substances are transferred through the food chains or that assess the risk to marine communities and human health. This is particularly important because different experiments confirm that marine organisms can accumulate trace metals obtained from their food sources (Wang and Rainbow 2000, Rainbow and Wang 2001, Xu and Wang 2002.…”