Concentration profile, spatial distributions and temporal trends of polybrominated diphenyl ethers in sediments across China: Implications for risk assessment

Yin, Hongmin; Tang, Zhenwu; Meng, Tong; Zhang, Minna

doi:10.1016/j.ecoenv.2020.111205

Cited by 25 publications

(5 citation statements)

References 86 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In general, the observed PBDE concentrations in the investigated site was much lower than those in IR-sites, and comparable to those in UI-areas. Additionally, media concertation of PBDEs in sediments across China reached 15.8 ng•g −1 , which was slightly higher than that in this study [54]. This indicated that the pollution control measures taken by this recycling plant might be effective.…”

Section: Contamination Of Pbdescontrasting

confidence: 60%

Polybrominated Diphenyl Ethers and Heavy Metals in a Regulated E-Waste Recycling Site, Eastern China: Implications for Risk Management

Yin

Liu³

et al. 2021

Molecules

Self Cite

View full text Add to dashboard Cite

Serious pollution of multiple chemicals in irregulated e-waste recycling sites (IR-sites) were extensively investigated. However, little is known about the pollution in regulated sites. This study investigated the occurrence of 21 polybrominated diphenyl ethers (PBDEs) and 10 metals in a regulated site, in Eastern China. The concentrations of PBDEs and Cd, Cu, Pb, Sb, and Zn in soils and sediments were 1–4 and 1–3 orders of magnitude lower than those reported in the IR-sites, respectively. However, these were generally comparable to those in the urban and industrial areas. In general, a moderate pollution of PBDEs and metals was present in the vegetables in this area. A health risk assessment model was used to calculate human exposure to metals in soils. The summed non-carcinogenic risks of metals and PBDEs in the investigated soils were 1.59–3.27 and 0.25–0.51 for children and adults, respectively. Arsenic contributed to 47% of the total risks and As risks in 71.4% of the total soil samples exceeded the acceptable level. These results suggested that the pollution from e-waste recycling could be substantially decreased by the regulated activities, relative to poorly controlled operations, but arsenic pollution from the regulated cycling should be further controlled.

show abstract

Section: Contamination Of Pbdescontrasting

confidence: 60%

Polybrominated Diphenyl Ethers and Heavy Metals in a Regulated E-Waste Recycling Site, Eastern China: Implications for Risk Management

Yin

Liu³

et al. 2021

Molecules

Self Cite

View full text Add to dashboard Cite

show abstract

“…where HQ is the hazard quotients, and RfD values (100 ng/kg bw/day for BDE-47, and 200 ng/kg bw/day for BDE-100 and 153) are the US EPA values as reported by US EPA [39]. Eco-toxicological risks posed by PBDE in sediment samples were evaluated by employing the assessment as given in Equation (3) [40][41][42].…”

Section: Non-carcinogenic Riskmentioning

confidence: 99%

“…FEQG values and the homologues grouped into tetraBDE (BDE-47), pentaBDE (BDE-100), and hexaBDE (BDE-153) were extracted from Federal Environment Quality Guideline (FEQG) for PBDEs [46]. HQ < 0.1 specifies no ecotoxicological, HQ between 0.1-1 shows low ecotoxicological risk, HQ between 1-10 indicates moderate ecotoxicological risk, and HQ > 10 indicates high ecotoxicological risk [40,41].…”

Section: Non-carcinogenic Riskmentioning

confidence: 99%

Occurrence and Risk Assessment of Polybrominated Diphenyl Ethers in Surface Water and Sediment of Nahoon River Estuary, South Africa

et al. 2022

View full text Add to dashboard Cite

The concentrations, potential sources, and compositional profile of PBDEs in the surface water and sediment of Nahoon Estuary, East London, South Africa, were investigated with solid-phase extraction and ultra-sonication, respectively, followed by gas-chromatography-electron capture detection. The seasonal range of the contaminants’ concentrations in water and sediment samples in spring season were ∑PBDE 329 ± 48.3 ng/L (25.32–785 ng/L) and ∑PBDE 4.19 ± 0.35 ng/g dw (1.91–6.57 ng/g), but ∑PBDE 62.1 ± 1.50 ng/L (30.1–110 ng/L) and ∑PBDE 65.4 ± 15.9 ng/g dw (1.98–235 ng/g) in summer, respectively. NH1 (first sampling point) was the most contaminated site with PBDE in the Estuary. The potential source of pollution is attributed to the stormwater runoff from a creek emptying directly into the Estuary. This study’s dominant PBDE congener is BDE-17, ranging from below detection limit to 247 ng/L and 0.14–32.1 ng/g in water and sediment samples, respectively. Most detected at all the sites were BDE-17, 47, 66, and 100. Most BDE-153 and 183 are found in sediment in agreement with the fact that higher brominated congeners of PBDE adsorb to solid materials. There was no correlation between the congeners and organic carbon and organic matter. However, the human health risk assessment conducted revealed that the PBDE concentration detected in the estuary poses a low eco-toxicological risk. Nevertheless, constant monitoring should be ensured to see that the river remains safe for the users, as it serves as a form of recreation to the public and a catchment to some neighbourhoods.

show abstract

“…Indeed, PBDEs in coastal waters have been detected at a concentration of 65.5 ng/L in the Bohai Sea of China [ 21 ]. However, their concentrations are generally higher in coastal sediments than in open waters, as high as 4212 (ng/g dw) [ 22 ]. In most areas, decabromodiphenyl ether (BDE-209) and 2,2’,4,4’-tetrabromodiphenyl ether (BDE-47) are the predominant types of identified PBDEs [ 21 , 22 ].…”

Section: Introductionmentioning

confidence: 99%

“…However, their concentrations are generally higher in coastal sediments than in open waters, as high as 4212 (ng/g dw) [ 22 ]. In most areas, decabromodiphenyl ether (BDE-209) and 2,2’,4,4’-tetrabromodiphenyl ether (BDE-47) are the predominant types of identified PBDEs [ 21 , 22 ]. The toxicity of BDE-47 toward microalgae has been evaluated in the algae Skeletonema costatum , Thalassiosira pseudonana , Phaeodactylum tricornutum , Platymonas subcordiformis , Alexandrium minutum , and Dunaliella salina [ 23 , 24 , 25 ].…”

Section: Introductionmentioning

confidence: 99%

Toxicity Effects of Combined Mixtures of BDE-47 and Nickel on the Microalgae Phaeodactylum tricornutum (Bacillariophyceae)

Shi

Guo

et al. 2022

Toxics

View full text Add to dashboard Cite

Nickel and 2,2’,4,4’-tetrabromodiphenyl ether (BDE-47) are two environmental pollutants commonly and simultaneously present in aquatic systems. Nickel and BDE-47 are individually toxic to various aquatic organisms. However, their toxicity mechanisms are species-dependent, and the toxic effects of combined mixtures of BDE-47 and nickel have not yet been investigated. The present study investigated the toxic effects of combined mixtures of BDE-47 and nickel in the diatom Phaeodactylum tricornutum. BDE-47 and nickel mixtures significantly decreased cell abundance and photosynthetic efficiency, while these cells’ reactive oxygen species (ROS) production significantly increased. The EC50-72 h for BDE-47 and mixtures of BDE-47 and nickel were 16.46 ± 0.93 and 1.35 ± 0.06 mg/L, respectively. Thus, combined mixtures of the two pollutants enhance their toxic effects. Interactions between BDE-47 and nickel were evaluated, revealing synergistic interactions that contributed to toxicity in P. tricornutum. Moreover, transcriptomic analyses revealed photosynthesis, nitrogen metabolism, the biosynthesis of amino acids, the biosynthesis of secondary metabolites, oxoacid metabolism, organic acid metabolism, carboxylic acid metabolism, and oxidation-reduction processes were considerably affected by the mixtures. This study provides evidence for the mechanisms of toxicity from combined BDE-47 and nickel exposure while also improving our understanding of the ecological risks of toxic chemicals on microalgae.

show abstract

Concentration profile, spatial distributions and temporal trends of polybrominated diphenyl ethers in sediments across China: Implications for risk assessment

Cited by 25 publications

References 86 publications

Polybrominated Diphenyl Ethers and Heavy Metals in a Regulated E-Waste Recycling Site, Eastern China: Implications for Risk Management

Polybrominated Diphenyl Ethers and Heavy Metals in a Regulated E-Waste Recycling Site, Eastern China: Implications for Risk Management

Occurrence and Risk Assessment of Polybrominated Diphenyl Ethers in Surface Water and Sediment of Nahoon River Estuary, South Africa

Toxicity Effects of Combined Mixtures of BDE-47 and Nickel on the Microalgae Phaeodactylum tricornutum (Bacillariophyceae)

Contact Info

Product

Resources

About