期刊
SCIENCE OF THE TOTAL ENVIRONMENT
卷 408, 期 20, 页码 4665-4671出版社
ELSEVIER
DOI: 10.1016/j.scitotenv.2010.07.012
关键词
Fecal steroids; Linear alkylbenzenes; Sediments; Sewage contamination; Antarctica
资金
- Ministerio do Meio Ambiente (MMA)
- Conselho Nacional de Pesquisa (CNPq)
- [CNPq 307110/2008-7]
- [CNPq 152417/2005-2]
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 mu g 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 mu g 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. (C) 2010 Elsevier B.V. All rights reserved.
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