title: Hydroxylated and methoxylated polybrominated diphenyl ethers and polybrominated dibenzo-p-dioxins in red alga and cyanobacteria living in the Baltic Sea.
abstract: Hydroxylated polybrominated diphenyl ethers (OH-PBDEs) and methoxylated polybrominated diphenyl ethers (MeO-PBDEs) are present in the ecosystem of the Baltic Sea. OH-PBDEs are known to be both natural products from marine environments and metabolites of the anthropogenic polybrominated diphenyl ethers (PBDEs), whereas, MeO-PBDEs appear to be solely natural in origin. Polybrominated dibenzo-p-dioxins (PBDDs) are by-products formed in connection with the combustion of brominated flame retardants (BFRs), but are also indicated as natural products in a red alga (Ceramium tenuicorne) and blue mussels living in the Baltic Sea. The aims of the present investigation were to quantify the OH-PBDEs and MeO-PBDEs present in C. tenuicorne; to verify the identities of PBDDs detected previously in this species of red alga and to investigate whether cyanobacteria living in this same region of the Baltic Sea contain OH-PBDEs, MeO-PBDEs and/or PBDDs. The red alga was confirmed to contain tribromodibenzo-p-dioxins (triBDDs), by accurate mass determination and additional PBDD congeners were also detected in this sample. This is the first time that PBDDs have been identified in a red alga. The SigmaOH-PBDEs and SigmaMeO-PBDEs concentrations, present in C. tenuicorne were 150 and 4.6 ng g(-1) dry weight, respectively. In the cyanobacteria 6 OH-PBDEs, 6 MeO-PBDEs and 4 PBDDs were detected by mass spectrometry (electron capture negative ionization (ECNI)). The PBDDs and OH-PBDEs and MeO-PBDEs detected in the red alga and cyanobacteria are most likely of natural origin.
authors.affiliation: Department of Environmental Chemistry, Stockholm University, SE-106 91 Stockholm, Sweden.
authors.forename: Anna
authors.initials: A
authors.lastname: Malmvärn
authors.forename: Yngve
authors.initials: Y
authors.lastname: Zebühr
authors.forename: Lena
authors.initials: L
authors.lastname: Kautsky
authors.forename: Ke
authors.initials: K
authors.lastname: Bergman
authors.forename: Lillemor
authors.initials: L
authors.lastname: Asplund
mesh_terms: D000458:Cyanobacteria / Q000737:chemistry* / Q000254:growth & development; D004147:Dioxins / Q000032:analysis* / Q000737:chemistry; D004784:Environmental Monitoring / Q000379:methods*; D008401:Gas Chromatography-Mass Spectrometry; D009792:Oceans and Seas; D010647:Phenyl Ethers / Q000032:analysis; D011075:Polybrominated Biphenyls / Q000032:analysis* / Q000737:chemistry; D000461:Rhodophyta / Q000737:chemistry* / Q000254:growth & development; D013548:Sweden; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000737:chemistry
chemical_list: D004147:Dioxins; D010647:Phenyl Ethers; D011075:Polybrominated Biphenyls; D014874:Water Pollutants, Chemical; C020887:dibenzo(1,4)dioxin