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handle: 10261/324062 , 10508/7412
Se presenta la variación temporal de bifenilos policlorados (PCBs) en mejillón silvestre Mytilus galloprovincialis de dos zonas de la Bahía de Santander (norte de España) de 1991 a 2003, así como la posible influencia en sus concentraciones de los diferentes aportes externos a que están sometidas ambas zonas. Las concentraciones de SCB7 (suma de los CBs Nos. IUPAC: 28, 52, 101, 118, 138, 153 y 180) de la zona de Pantalán, oscilan entre los 21 μg kg–1 en peso húmedo (ph) y los 38 μg kg–1 ph Mientras que en la zona de Pedreña, con menor influencia antropogénica, varían entre un mínimo de 8 μg kg–1 ph y un máximo de 15 μg kg–1 ph Para conocer la evolución temporal, se usa el coeficiente de correlación Tau-b de Kendall y se comprueba la existencia de una tendencia decreciente significativa en los niveles de PCBs en ambas zonas.
An analysis was made of the temporal variation of polychlorinated biphenyls (PCBs) in wild mussel, Mytilus galloprovincialis, from two areas of Santander Bay (northern Spain) during 1991–2003, as well as of the posible influence of different external contributions on their concentrations. The concentrations of the sum of seven PCBs (IUPAC numbers 28, 52, 101, 118, 138, 153 and 180) from the Pantalán area ranged from 21 to 38 μg kg–1 wet weight, whereas those from the Pedreña area, subject to less anthropogenic influence, ranged from 8 to 15 μg kg–1 wet weight. To determine the temporal evolution, the Kendall Tau-b correlation coefficient was used and a decreasing trend in PCB levels was verified for both areas.
Sí
Santander Bay (Spain), Mytilus galloprovincialis, Bahía de Santander (España), Centro Oceanográfico de Vigo, Variación temporal, PCBs, Medio Marino, Wild mussel, Mejillón silvestre, Temporal variation
Santander Bay (Spain), Mytilus galloprovincialis, Bahía de Santander (España), Centro Oceanográfico de Vigo, Variación temporal, PCBs, Medio Marino, Wild mussel, Mejillón silvestre, Temporal variation
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