Natural and anthropogenic hydrocarbons in the water column of the Ross Sea (Antarctica) (Articolo in rivista)

Type
Label
  • Natural and anthropogenic hydrocarbons in the water column of the Ross Sea (Antarctica) (Articolo in rivista) (literal)
Anno
  • 2008-01-01T00:00:00+01:00 (literal)
Alternative label
  • Cincinelli A., Martellini T., Bittoni L., Russo A., Gambaro A., Lepri L (2008)
    Natural and anthropogenic hydrocarbons in the water column of the Ross Sea (Antarctica)
    in Journal of marine systems
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Cincinelli A., Martellini T., Bittoni L., Russo A., Gambaro A., Lepri L (literal)
Pagina inizio
  • 208 (literal)
Pagina fine
  • 220 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 73 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Titolo
  • Natural and anthropogenic hydrocarbons in the water column of the Ross Sea (Antarctica) (literal)
Abstract
  • In the framework of the Italian Research Programme in Antarctica (PNRA) an oceanographic cruise was carried out between December 2000 and February 2001 in the Western Ross Sea. n-Alkanes and PAHs concentrations were analysed in sea-water samples collected at different depths at four sites (D, B, CA2, and CA). Vertical profiles of pressure, temperature, salinity and fluorescence were also performed in order to distinguish the water masses present in the sampling areas. n-Alkanes concentrations were consistent with those found in the same area during previous expeditions and showed higher values in the particulate due to the low temperatures. n-Alkanes profiles exhibited different features in the dissolved and particulate phases. The dissolved phase was characterised by a bimodal distribution with two maxima at C16 and C24 and prevalent compounds in the range C15-C32 whereas particulate was strongly dominated by long chain n-alkanes C23-C34 with C24 (Site B, CA and CA2) or C32 (Site B) as Cmax. CPI values and Pr/Ph ratios suggested a prevalent biogenic origin for aliphatic hydrocarbons. n-Alkanes vertical distributions were affected by the dynamic of the pack-ice melting and phytoplankton activity as well by the chemical-physical properties of water masses. Higher n-alkanes values were found in the High Salinity Shelf Waters (HSSW), lower n-alkanes values were found in the Antarctic Surface Waters (AASW) and Modified Circumpolar Deep Water (MCDW). (literal)
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