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- W1996970131 abstract "Horizontal and vertical distributions of organic compounds extractable with n-hexane were investigated at five sampling stations (Ross Sea) during the Italian Antarctic Expedition 1997/98. Samples were collected from seven depths under pack ice and from two or three depths at the other stations located at different distances from the coast. The lowest concentrations of biogenic and anthropogenic compounds were found at station Y3, the furthest from the coast, while the highest concentrations were observed under pack ice (B2-2 station) or in the Polynya zone (Y1 station). The levels of organic compounds in the particulate phase were higher than those in the dissolved phase for all the investigated samples. Concentrations of biogenic organic compounds (long-chain aldehydes and alcohols, fatty acid esters and n-alkanes) were well related to fluorescence intensity, which is usually reported as a biological activity index. The odd-to-even carbon-number ratio for n-alkanes was lower than 1 at stations B2-2, Y1, Y5 and Y6 (located less than 150 km far from the coast) with the predominance of n-C16, n-C24 and n-C28, indicative of autochthonous pelagic species. An odd-to-even ratio higher than unity and a different n-alkane profile were observed at station Y3 (about 300 km from the Ross Ice Shelf and 600 km from Terra Nova Bay). Low levels of pollutants (i.e. phthalates) were found, mainly in the particulate phase up to a depth of 50 m, confirming a local source of the phthalates found at significant concentrations during previous expeditions." @default.
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- W1996970131 date "2004-05-15" @default.
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- W1996970131 title "Horizontal and vertical distributions of Biogenic and Anthropogenic Organic compounds in the Ross Sea (Antarctica)" @default.
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- W1996970131 doi "https://doi.org/10.1080/03067310310001626687" @default.
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