scholarly journals Uptake and trophic changes in polybrominated diphenyl ethers in the benthic marine food chain in southwestern British Columbia, Canada

FACETS ◽  
2019 ◽  
Vol 4 (1) ◽  
pp. 20-51
Author(s):  
Brenda Burd ◽  
Chris Lowe ◽  
Carmen Morales-„Caselles ◽  
Marie Noel ◽  
Peter Ross ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Polybrominated Diphenyl Ethers ◽  
Dry Weight ◽  
Trophic Levels ◽  
Marine Food Chain ◽  
Deposit Feeders ◽  
Diphenyl Ethers ◽  
Bottom Fish ◽  
Harbour Sediment ◽  
Marine Food

We examined the physical and geochemical effects of sediment on the uptake of polybrominated diphenyl ethers (PBDEs) into marine sediment feeders and their transfer to higher trophic fauna. Sediment PBDEs increased with % total organic carbon (%TOC), organic carbon (OC) flux and grain size (%fines). Tissue PBDE variance was best explained ( R2 = 0.70) by sediment acid volatile sulfides (AVS), PBDEs, and organic lability and input, with the highest values near wastewater outfalls. Dry weight tissue/sediment PBDEs declined with increasing sediment PBDEs, resulting in tissue dilution (ratio <1) at >10 000 pg/g in harbours. Ratios also decreased with increasing %fines, resulting in regional differences. These patterns imply that high levels of fines and high sediment concentrations make PBDEs less bioavailable. Dry weight PBDEs increased >100× between background deposit feeders and predators (polychaetes, crabs, bottom fish, seal), but lipid normalized PBDEs barely increased (<1.3%), suggesting remarkably high uptake in low-lipid sediment feeders, and that PBDEs don’t accumulate at higher trophic levels, but lipid content does. Filter feeders had lower lipid-normalized PBDEs than deposit feeders, highlighting the importance of food resources in higher trophic fauna for bioaccumulation. The most profound congener change occurred with sediment uptake, with nona/deca-BDEs declining and tetra-hexa-BDEs increasing. Harbour sediment feeders had more deca-BDEs than other samples, suggesting PBDEs mostly pass unmodifed through them. Deca-BDEs persist patchily in all tissues, reflecting variable dependence on sediment/pelagic food.

scholarly journals Polybrominated Diphenyl Ethers (PBDEs) in a Large, Highly Polluted Freshwater Lake, China: Occurrence, Fate, and Risk Assessment

2018 ◽  
Vol 15 (7) ◽  
pp. 1529 ◽  
Author(s):  
Jianchao Liu ◽  
Guanghua Lu ◽  
Fuhai Zhang ◽  
Matthew Nkoom ◽  
Zhenhua Yan ◽  
...  
Keyword(s):  
Polybrominated Diphenyl Ethers ◽  
Dry Weight ◽  
Trophic Levels ◽  
Whole Body ◽  
Chaohu Lake ◽  
Lake Basin ◽  
Relative Contribution ◽  
Noncarcinogenic Risk ◽  
Diphenyl Ethers ◽  
Biota Samples

Polybrominated diphenyl ethers (PBDEs) were extensively investigated in water, sediment, and biota samples collected from Chaohu Lake basin in China. The total concentrations of eight PBDEs (Σ8PBDEs) were in the ranges of 0.11–4.48 ng/L, 0.06–5.41 ng/g, and 0.02–1.50 ng/g dry weight (dw) in the water, sediment, and biota samples, respectively. The concentrations showed wide variations in the monitoring area, while the congener profiles in all the water, sediment, and biota samples were generally characterized by only a few compounds, such as BDE-47, BDE-99, and/or BDE-209. The spatial analysis depicted a decreasing trend of PBDEs from west to east Chaohu Lake, consistent with regional industrialization degree. The distributions of PBDE congeners in the biota samples were similar to the compositional profiles in the water, which were dominated by BDE-47 and/or BDE-99. Nevertheless, BDE-47 and BDE-153 in the brain tissue showed a higher accumulative potential than PBDEs in other tissues as well as the whole body, with 96% relative contribution of Σ8PBDEs. The noncarcinogenic risk values estimated for BDE-47, BDE-99, and BDE-153 indicated that the specific risk associated with the studied water and foodstuffs is limited. However, there is a potential mixture ecotoxicity at three trophic levels at some sampling points in the water, which should draw considerable attention.

Bioaccumulation of polybrominated diphenyl ethers and hexabromocyclododecane in the northwest Atlantic marine food web

2009 ◽  
Vol 407 (10) ◽  
pp. 3323-3329 ◽  
Author(s):  
Susan D. Shaw ◽  
Michelle L. Berger ◽  
Diane Brenner ◽  
Kurunthachalam Kannan ◽  
Nina Lohmann ◽  
...  
Keyword(s):  
Food Web ◽  
Polybrominated Diphenyl Ethers ◽  
Northwest Atlantic ◽  
Marine Food Web ◽  
Diphenyl Ethers ◽  
Marine Food

Bioaccumulation behaviour of polybrominated diphenyl ethers (PBDEs) in a Canadian Arctic marine food web

2008 ◽  
Vol 401 (1-3) ◽  
pp. 60-72 ◽  
Author(s):  
Barry C. Kelly ◽  
Michael G. Ikonomou ◽  
Joel D. Blair ◽  
Frank A.P.C. Gobas
Keyword(s):  
Food Web ◽  
Polybrominated Diphenyl Ethers ◽  
Canadian Arctic ◽  
Marine Food Web ◽  
Diphenyl Ethers ◽  
Marine Food

scholarly journals Methoxylated and hydroxylated polybrominated diphenyl ethers in surface sediments from the southern Yellow Sea: spatial distribution and potential producers

2015 ◽  
Vol 12 (3) ◽  
pp. 366 ◽  
Author(s):  
Ying Fan ◽  
Jing Lan ◽  
Jiaokai Wang ◽  
Zongshan Zhao ◽  
Meixun Zhao ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Yellow Sea ◽  
Polybrominated Diphenyl Ethers ◽  
Surface Sediments ◽  
Dry Weight ◽  
Marine Phytoplankton ◽  
Southern Yellow Sea ◽  
Terrestrial Organic Matter ◽  
The Southern Yellow Sea ◽  
Diphenyl Ethers

Environmental context Methoxylated and hydroxylated polybrominated diphenyl ethers are of increasing concern owing to their global distribution and potential ecological risks. We investigated the spatial distribution and sources of these brominated compounds in surface sediments from the southern Yellow Sea, China. The results suggest that marine phytoplankton may be the potential producers of these compounds, thereby providing new insights into their occurrence and provenance in marine environments. Abstract Methoxylated polybrominated diphenyl ethers (MeO-PBDEs) and hydroxylated polybrominated diphenyl ethers (OH-PBDEs) have recently caused worldwide concern; however, there have been very limited studies on their presence in marine sediments. In the present study, MeO-PBDEs, OH-PBDEs and phytoplankton biomarkers were determined in surface sediments from the southern Yellow Sea. MeO-PBDEs and OH-PBDEs are ubiquitous in southern Yellow Sea sediments, with total contents ranging from 43.0 to 571.4pgg–1 dry weight. High contents of these compounds mainly concentrated in the central southern Yellow Sea basin, and their spatial distributions generally presented a seaward-increasing trend. By comparing with total organic carbon and terrestrial organic matter contributions in sediments, these compounds were inferred to originate mainly from marine production rather than from terrigenous inputs. Statistical analysis shows that there are significant correlations between MeO-PBDEs, OH-PBDEs and phytoplankton biomarkers, indicating that MeO-PBDEs and OH-PBDEs are mainly natural compounds, and the phytoplankton are likely to be their potential producers in the southern Yellow Sea, especially for dinosterol.

Effect of Pb2+, Cd2+, Cu2+ and dissolved organic carbon (DOC) on the distribution and partition of decabromodiphenyl ether (BDE-209) in a water–sediment system

RSC Advances ◽  
2015 ◽  
Vol 5 (127) ◽  
pp. 105259-105265
Author(s):  
Donggao Yin ◽  
Hui Peng ◽  
Hua Yin ◽  
Su Zhou ◽  
Shichang Xiong ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Polybrominated Diphenyl Ethers ◽  
Electronic Waste ◽  
Combined Pollution ◽  
Decabromodiphenyl Ether ◽  
System P ◽  
Diphenyl Ethers ◽  
Bde 209

The combined pollution of polybrominated diphenyl ethers (PBDEs) and heavy metals in electronic waste dismantling areas has received increasing concern in recent years.

Bioconcentration and biomagnification of polybrominated diphenyl ethers (PBDEs) through lower-trophic-level coastal marine food web

2009 ◽  
Vol 58 (8) ◽  
pp. 1217-1224 ◽  
Author(s):  
Kaoruko Mizukawa ◽  
Hideshige Takada ◽  
Ichiro Takeuchi ◽  
Tokutaka Ikemoto ◽  
Koji Omori ◽  
...  
Keyword(s):  
Food Web ◽  
Trophic Level ◽  
Polybrominated Diphenyl Ethers ◽  
Marine Food Web ◽  
Lower Trophic Level ◽  
Coastal Marine ◽  
Diphenyl Ethers ◽  
Marine Food
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