A survey of some trace elements in seaweeds from Patagonia, Argentina.

Environ Pollut

Departamento de Química Inorgánica, Analítica y Química Fisica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Argentina.

Published: January 2005

AI Article Synopsis

  • Cadmium and lead concentrations were measured in common algal species along the southern coasts of Argentina, focusing on two areas: one affected by an industrial city and another known for seaweed harvesting.
  • Samples from the harvesting area showed low metal levels, while brown seaweeds from the industrial site displayed noticeable accumulation of lead and cadmium.
  • Aluminum analysis revealed significantly high levels in the industrial area, especially in the species Colpomenia sinuosa, although overall cadmium and lead levels were lower than those in other polluted marine areas worldwide.

Article Abstract

Cadmium and lead concentrations were determined in some common algal species living in the southernmost coasts of Argentina. Two different sampling areas were chosen: Gulf Nuevo, a locality being influenced by a developing industrial city, and Bay Camarones, a traditional harvest area for seaweed exploitation. Selected species of the genera Lessonia, Macrocystis and Gigartina, all of commercial interest, were collected from the harvest area, and analyses showed low levels of the metals in these species. Accumulation of Pb and Cd was also evident in other common brown seaweeds from the industrial site. Analysis of Al was included in this study due to an aluminum works near one of the sampling sites. High values of this metal ranging between 300 and 3000 mg Al/kg (dry basis) were recorded in the industrialized area. Amongst all of the species studied, Colpomenia sinuosa from Gulf Nuevo exhibited the highest values of aluminum. This preliminary survey showed that, except for Al, the levels of Cd and Pb were lower than those reported in same species of seaweeds from the polluted marine waters of the rest of the world.

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http://dx.doi.org/10.1016/0269-7491(94)p2613-eDOI Listing

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