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Anthropogenic and naturally-produced organobrominated compounds in marine mammals from Brazil
Dorneles, P.; Lailson-Brito, J.; Dirtu, A.C.; Weijs, L.; Azevedo, A.; Torres, J.; Malm, O.; Neels, H.; Blust, R.; Das, K.; Covaci, A. (2010). Anthropogenic and naturally-produced organobrominated compounds in marine mammals from Brazil. Environ. Int. 36(1): 60-67.
In: Environment International. Pergamon: New York. ISSN 0160-4120; e-ISSN 1873-6750, more
Peer reviewed article  

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Author keywords
    Flame retardants; PBDEs; MeO-PBDEs; Dolphins; Brazil

Authors  Top 
  • Dorneles, P.
  • Lailson-Brito, J.
  • Dirtu, A.C., more
  • Weijs, L., more
  • Azevedo, A.
  • Torres, J.
  • Malm, O.
  • Neels, H., more

    Liver samples from 51 cetaceans, comprising 10 species, stranded between 1994 and 2006 in a highly industrialized and urbanized region in Southeast Brazil, were analyzed for polybrominated diphenyl ethers (PBDEs) and methoxylated-PBDEs (MeO-PBDEs). A concentration range of PBDEs (3–5960 ng/g lw) similar to that observed in Northern Hemisphere dolphins was found. MeO-PBDE concentrations in continental shelf (CS) dolphins from Brazil are among the highest detected to date in cetaceans (up to 250 µg/g lw). Higher SMeO-PBDE concentrations were measured in CS and oceanic dolphins than in estuarine dolphins. The SPBDE/SMeO-PBDE ratio varied significantly ranging from a mean value of 7.12 to 0.08 and 0.01 for estuarine, CS and oceanic species, respectively. A positive correlation was observed between SPBDE and year of stranding of male estuarine dolphins (Sotalia guianensis), which suggests temporal variation in the exposure. Placental transfer of organobrominated compounds was also evidenced in S. guianensis.

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