Back to Search
Start Over
Biomagnification of anthropogenic and naturally-produced organobrominated compounds in a marine food web from Sydney Harbour, Australia
- Source :
- Environment international, Environment International, Vol 35, Iss 8, Pp 1142-1149 (2009)
- Publication Year :
- 2009
-
Abstract
- Polybrominated diphenyl ethers (PBDEs) and naturally-produced organobrominated compounds, such as methoxylated PBDEs (MeO-PBDEs), have been scarcely studied in the Southern Hemisphere. Yet, sources of the latter group of compounds were found in Southern regions, specifically in Australia. The environmental distribution and biomagnification potential of organobrominated compounds were therefore investigated in a representative aquatic food chain (invertebrates and fish) from the Sydney Harbour, Australia. Mean PBDE concentrations ranged from 6.4 ng/g lipid weight (lw) in squid to 115 ng/g lw in flounder. BDE 47 was the dominant congener, followed by BDE 100. Mean levels of MeO-PBDEs (sum of congeners 2’-MeO-BDE 68 and 6-MeO-BDE 47) were as high as 110 ng/g lw in tailor, with a slight dominance of 2’-MeO-BDE 68. Polybrominated hexahydroxanthene derivates (PBHDs), another class of naturally-produced compounds, were found at variable concentrations and ranged from 4.7 ng/g lw in fanbelly and 146 ng/g lw in tailor. The tribrominated PBHD isomer dominated in the samples, except for luderick and squid. The lower levels of PBDEs found in luderick from the harbour compared to those obtained from the upper Parramatta River indicated a terrestrial (anthropogenic) origin of PBDEs, while the higher levels of MeO-PBDEs and PBHDs in the samples from the harbour confirmed the marine (natural) origin of these compounds. The highest trophic magnification factor (TMF) was found for sum PBDEs (3.9), while TMFs for sum MeO-PBDEs and sum PBHDs were 2.9 and 3.4, respectively. This suggests that biomagnification occurs in the studied aquatic food chain for anthropogenic brominated compounds, but also for the naturally-produced organobromines. Keywords: Biomagnification, PBDEs, Brominated natural compounds, MeO-PBDEs, PBHDs, Fish, Invertebrates, Australia, Food chain
- Subjects :
- Food Chain
Brachyura
Biomagnification
Flounder
Anthropogenic factors
PSE, Australia, New South Wales, Sydney Harbour
Polybrominated biphenyls
Food chain
Polybrominated diphenyl ethers
Rivers
Halogenated Diphenyl Ethers
Animals
Seawater
Biology
lcsh:Environmental sciences
Flame Retardants
General Environmental Science
Trophic level
lcsh:GE1-350
Persistent organic pollutant
Pacific Ocean
Chemistry
Pharmacology. Therapy
Decapodiformes
Fishes
Quality control
Aquatic animal
Invertebrates
Quality assurance
Hydrocarbons, Brominated
Kinetics
Fish
Congener
Environmental chemistry
Polybrominated Biphenyls
New South Wales
Bromine compounds
Water Pollutants, Chemical
Environmental Monitoring
Subjects
Details
- Language :
- English
- ISSN :
- 01604120
- Database :
- OpenAIRE
- Journal :
- Environment international
- Accession number :
- edsair.doi.dedup.....8646737f62fcfa221f03f58abf3a080b