Natural and anthropogenically-produced brominated compounds in endemic dolphins from Western South Atlantic: Another risk to a vulnerable species
详细信息 查看全文
- 作者：Mariana B. Alonso ; Ethel Eljarrat ; Marina Gorga ; Eduardo R. Secchi ; Manuela Bassoi ; Lup¨¦rcio Barbosa ; Carolina P. Bertozzi ; Juliana Marigo ; Marta Cremer ; Camila Domit ; Alex ; re F. Azevedo ; Paulo R. Dorneles ; Jo?o Paulo M. Torres ; Jos¨¦ Lailson-Brito ; Olaf Malm ; Dami¨¤ Barcel¨®
- 关键词：Brazil ; Cetaceans ; Emerging brominated compounds ; MeO-PBDEs ; PBDEs
- 刊名：Environmental Pollution
- 出版年：2012
- 出版时间：November, 2012
- 年：2012
- 卷：170
- 期：Complete
- 页码：152-160
- 全文大小：639 K
文摘
Liver samples from 53 Franciscana dolphins along the Brazilian coast were analyzed for organobrominated compounds. Target substances included the following anthropogenic pollutants: polybrominated diphenyl ethers (PBDEs), polybrominated biphenyls (PBBs), pentabromoethylbenzene (PBEB), hexabromobenzene (HBB), decabromodiphenylethane (DBDPE), as well as the naturally-generated methoxylated-PBDEs (MeO-PBDEs). PBDE concentrations ranged from 6 to 1797?ng/g lw (mean 166?¡À?298?ng/g lw) and were similar to those observed in cetaceans from Northern Hemisphere. PBBs were found in all sampling locations (<LOQ to 57?ng/g lw). DBDPE was detected in 42 % of the dolphins from the most industrialized Brazilian state and the concentrations ranging from <LOQ to 352?ng/g lw. Franciscana dolphins from the tropical Brazilian shore presented the highest MeO-PBDE concentrations ever reported for coastal cetaceans (up to 14?¦Ìg/g lw). Eight MeO-PBDE congeners were detected and the present investigation constituted the first record of occurrence of six of them in marine mammal livers.