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Historical record of polycyclic aromatic hydrocarbons (PAHs) and spheroidal carbonaceous particles (SCPs) in marine sediment cores from Admiralty Bay, King George Island, Antarctica |
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| Authors: | César C Martins Márcia C Bícego Satie Taniguchi Rubens CL Figueira Rosalinda C Montone |
| Institution: | a Centro de Estudos do Mar da Universidade Federal do Paraná, Caixa Postal 50.002, 83255-000 Pontal do Sul, Pontal do Paraná - PR, Brazil b Instituto Oceanográfico da Universidade de São Paulo (IO/USP), Praça do Oceanográfico, 191, 05508-120 São Paulo - SP, Brazil c Environmental Change Research Centre, University College London, Gower Street, London, WC1E 6BT, UK |
| Abstract: | This paper describes the first results of polycyclic aromatic hydrocarbons (PAHs) and spheroidal carbonaceous particles (SCPs) in sediment cores of Admiralty Bay, Antarctica. These markers were used to assess the local input of anthropogenic materials (particulate and organic compounds) as a result of the influence of human occupation in a sub-Antarctic region and a possible long-range atmospheric transport of combustion products from sources in South America. The highest SCPs and PAHs concentrations were observed during the last 30 years, when three research stations were built in the area and industrial activities in South America increased. The concentrations of SCPs and PAHs were much lower than those of other regions in the northern hemisphere and other reported data for the southern hemisphere. The PAH isomer ratios showed that the major sources of PAHs are fossil fuels/petroleum, biomass combustion and sewage contribution generally close to the Brazilian scientific station. |
| Keywords: | Antarctica Fly-ash Hydrocarbons Sediments |
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