Distribution of sewage input in marine sediments around a maritime Antarctic research station indicated by molecular geochemical indicators

Sediments from Admiralty Bay, Antarctica were collected during the austral summers of 2002/2003 and 2003/2004 in order to assess the distribution and concentration of sewage indicators originating from Comandante Ferraz Brazilian Antarctic Station. Fecal sterols (coprostanol + epicoprostanol) and li...

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Bibliographic Details
Published in:The Science of the total environment 2010-09, Vol.408 (20), p.4665-4671
Main Authors: Montone, Rosalinda C., Martins, César C., Bícego, Márcia C., Taniguchi, Satie, Albuquerque Moreira da Silva, Denis, Campos, Lúcia S., Weber, Rolf Roland
Format: Article
Language:English
Subjects:
Antarctic Regions
Antarctica
Applied sciences
Biological and physicochemical properties of pollutants. Interaction in the soil
Cholestanol - analysis
Cholestanols - analysis
Earth sciences
Earth, ocean, space
Engineering and environment geology. Geothermics
Environmental Monitoring - methods
Exact sciences and technology
Fecal steroids
Geologic Sediments - chemistry
Indicators
Inlets
Linear alkylbenzenes
Mathematical analysis
Pollution
Pollution sources. Measurement results
Pollution, environment geology
Seawater - chemistry
Sediments
Sewage
Sewage - analysis
Sewage contamination
Soil and sediments pollution
Stations
Steroids
Steroids - analysis
Sterols
Water Pollutants - analysis
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Summary:Sediments from Admiralty Bay, Antarctica were collected during the austral summers of 2002/2003 and 2003/2004 in order to assess the distribution and concentration of sewage indicators originating from Comandante Ferraz Brazilian Antarctic Station. Fecal sterols (coprostanol + epicoprostanol) and linear alkylbenzenes (LABs) ranged from < 0.01 to 0.95 μg g − 1 and < 1.0 to 23 ng g − 1 dry weight, respectively. In general, the higher concentrations were found only locally in the vicinity of Ferraz station at Martel Inlet. Baseline values for fecal sterols and coprostanone were calculated as 0.19 and 0.40 μg g − 1, respectively. According to fecal sterols concentrations, sewage contribution to Martel Inlet has increased more than twice since 1997, as result of the increase in the number of researchers at the station especially during the last decade. A low correlation was found between total LABs and fecal steroids, which could be attributed to the contribution of the natural sources of steroids.
ISSN:0048-9697
1879-1026
DOI:10.1016/j.scitotenv.2010.07.012