title: Mercury deposition during the previous century in an upwelling region; Cabo Frio, Brazil.
abstract: To investigate the upwelling influence on Hg biogeochemical cycles and the sedimentological changes during the previous ≈ 150 years, four sediment box-cores were sampled along an inshore offshore transect on the Southeastern Brazilian continental shelf. Mercury values were found to be relatively low, with means ranging between 8.08 and 30.4 ng g(-1). Mercury fluxes along the sediment cores are directly related to the well documented historical regional activity and global atmospheric deposition. The narrow relationship between mercury and organic carbon suggest that upwelling phenomenon and primary production may play an important role on Hg input and distribution along continental shelf depositional settings.
authors: Depto. Geoquímica, Universidade Federal Fluminense, Outeiro São João Batista s/n, Centro, Niterói, RJ CEP 24020-141, Brazil.
authors: Thiago S
authors: TS
authors: Figueiredo
authors: Ana Luiza S
authors: AL
authors: Albuquerque
authors: Christian J
authors: CJ
authors: Sanders
authors: Lívia G M S
authors: LG
authors: Cordeiro
authors: Emmanoel V
authors: EV
authors: Silva-Filho
mesh_terms: D001938:Brazil; D004784:Environmental Monitoring; D019015:Geologic Sediments / Q000737:chemistry*; D008628:Mercury / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis*; D014877:Water Pollution, Chemical / Q000706:statistics & numerical data*
chemical_list: D014874:Water Pollutants, Chemical; D008628:Mercury
keywords: Atlantic Ocean; Mercury fluxes; Sediments; Upwelling