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- W2245295921 abstract "Temporal variations in lead concentrations and stable lead isotopic ratios (Pb/Pb, Pb/Pb) in two sediment cores from the Cascais Canyon shows changes in sources of Pb during the last two centuries. The increase of total Pb contents with the evolution of Pb/Pb ratio recorded in both cores reveals the increase of Pb from industrial sources. Nevertheless, this increase is lower in deeper core location (252-32) due to dilution and mixing with uncontaminated marine materials. An isotopic shift towards lower Pb/Pb in the shallower core (252-35) during the 1970s may reflect the increasing number of vehicles in the Lisboa area during that time. Palabras clave: Margem Portuguesa, sedimentos marinhos, isotopos estaveis de chumbo, chumbo" @default.
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- W2245295921 date "2009-12-01" @default.
- W2245295921 modified "2023-09-28" @default.
- W2245295921 title "Recent changes in lead isotopic signature in sediments of the Cascais Canyon (Portugal)" @default.
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