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Consejo Superior de Investigaciones Científicas, Scientia Marina, S1(77), p. 91-99, 2013

DOI: 10.3989/scimar.03725.27h

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Copper in Galician ria sediments: natural levels and harbour contamination

Journal article published in 2013 by Ana García, Ricardo Prego ORCID, Patricia Bernárdez
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

[EN] Copper distribution, natural background and contamination levels in sediments of the Galician rias were assessed from 389 surface sediment samples and five sediment cores. The natural reference concentration of copper can be estimated using the Cu-Fe relationship obtained from preindustrial sediments of rias: [Cu (mg kg–1)] / [Fe (g kg–1)] = 0.55. Severe copper contamination was mainly observed in the harbour, fishing ports and shipyards near shore areas of the Galician coast. Therefore, the rias of Ferrol and Vigo were the most environmentally disturbed, while the northern Galician rias were the least disturbed. The Galician case can be seen as the type of copper contamination due to maritime activities observed in other world harbours. ; [ES] El cobre en el sedimento de las rías gallegas: niveles naturales y contaminación portuaria. – A partir de 389 muestras de sedimento superficial y 5 testigos de sedimento se ha determinado la distribución, concentraciones naturales y niveles de contaminación por cobre en los sedimentos de las rías gallegas. En base a sedimentos preindustriales se ha obtenido una correlación entre hierro y cobre aplicable a las rías: [Cu (mg kg–1)] / [Fe (g kg–1)] = 0.55. Al calcular con esta ecuación los factores de enriquecimiento por cobre del sedimento superficial se ha detectado una fuerte contaminación en las zonas portuarias y de astilleros en la costa gallega. Bajo este aspecto son las rías de Ferrol y Vigo las más alteradas mientras que lo contrario ocurre con las rías del norte de Galicia. Este tipo de contaminación por cobre en el noroeste de la península Ibérica se suma a algunos casos derivados del tráfico y construcción de buques observados en otras áreas costeras del planeta ; 9 páginas, 5 figuras, 1 tabla ; This article is a contribution to the Spanish LOICZ program and it was partially supported by the projects with acronyms METRIA (ref. REN2003-04106-C03) and INTERESANTE (ref. CTM2007-62546-C03/MAR), financed by the Spanish CICYT.