While the production of polybrominated diphenyl ethers (PBDEs) was gradually phased out in the last decade, they may still pose hidden danger to the environment due to their toxicity and persistence. On the other hand, alternative halogenated flame retardants (AHFRs) have been increasingly used as substitutes for PBDEs and may further worsen environmental health. To determine the environmental impact of PBDEs and AHFRs, we examined the historical trends and ecological risks of PBDEs and AHFRs in a typical industrialized city in South China by measuring their concentrations in mangrove sediment. Results showed that the concentrations of PBDEs increased abruptly from 1997 to 2009 due to the use of commercial deca-BDE mixture, but were stabilized in recent years. The concentrations of AHFRs, mainly contributed by decabromodiphenyl ethane (DBDPE), kept increasing from 1997 onwards. Based on the temporal trends, DBDPE is predicted to be predominant over BDE 209 in future. Despite the observed similar concentration between BDE 209 and DBDPE, the former posed a high ecological risk, while the ecological risk of the latter was negligible. Therefore, more attention is required to manage the contamination of BDE 209 in the environment.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.scitotenv.2017.05.002 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Occurrence of PBDEs in car and airplane dust in Poland - exposure assessment and health risk characterization for selected age ranges.
Ann Agric Environ Med
December 2024
Department of Toxicology and Health Risk Assessment, National Institute of Public Health NIH / National Research Institute, Warsaw, Poland.
Introduction And Objective: Polybrominated diphenyl ethers (PBDEs) are a class of flame-retarding synthetic compounds. They may cause a potential threat to human health due to their bio-accumulative and toxicological properties, and ubiquitous presence in the environment. Food, and ingested dust constitute principal sources of human exposure to PBDEs.
View Article and Find Full Text PDFPolychlorinated biphenyls and polybrominated diphenyl ethers in infant food: Occurrence and exposure assessment.
Sci Total Environ
December 2024
Osaka University, Research Center for Environmental Preservation, Japan.
The objective of this study was to analyze the concentrations of polychlorinated biphenyls (PCBs) and polybrominated diphenyl ethers (PBDEs) in infant food (infant formulas and human milk) collected in Serbia and to assess their exposure and associated health risks. A total of 101 PCB congeners and 26 PBDE congeners were analyzed. In infant formulas (IF), the total PCB levels averaged 63.
View Article and Find Full Text PDFProtective effect of trehalose on sperm chromatin condensation failure and semen quality decline in BDE-209-exposed mice.
Food Chem Toxicol
December 2024
Department of Occupational and Environmental Health, School of Public Health, Anhui Medical University, Hefei, 230032, China. Electronic address:
Article Synopsis
- BDE-209 exposure leads to male reproductive toxicity characterized by a decline in sperm quality, but the impact of autophagy in this process was not well understood.
- The study evaluated the protective effects of trehalose (Tre), an autophagy inducer, on reproductive damage during sperm development (spermiogenesis) caused by BDE-209 using a mouse model.
- Results showed that Tre improved various sperm qualities and reduced testicular damage, likely by restoring normal autophagy pathways via AMPK-ULK1 signaling, highlighting potential therapeutic targets for addressing male reproductive toxicity.
Organophosphate Esters and Polybrominated Diphenyl Ethers in Vehicle Dust: Concentrations, Sources, and Health Risk Assessment.
Toxics
November 2024
School of Public Health, Ningxia Medical University, Yinchuan 750004, China.
Background: The primary flame retardants in vehicles, organophosphates (OPEs) and polybrominated diphenyl ethers (PBDEs), volatilize and accumulate in the enclosed vehicle environment, posing potential health risks. Amidst the rising number of vehicles, the scrutiny of persistent organic pollutants like OPEs and PBDEs in vehicles is increasing. This study investigates occupational and nonoccupational population exposure to specific OPEs (TnBP, TBOEP, TEHP, TCEP, TCiPP, TDCiPP, TPhP, EHDPP) and PBDEs (BDE-28, BDE-47, BDE-99, BDE-100, BDE-153, BDE-154, BDE-183, BDE-209) in vehicle dust.
View Article and Find Full Text PDFStudy on association between human plasma polybrominated diphenyl ethers (PBDEs) and thyroid homeostasis and carcinoma.
Environ Geochem Health
November 2024
Jinzhou Medical University Graduate Training Base (Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine), 121001, Jinzhou, People's Republic of China.
Article Synopsis
- Polybrominated diphenyl ethers (PBDEs) are persistent organic pollutants known for disrupting endocrine function and potentially promoting tumors, yet their specific effects on thyroid health and cancer in humans are not fully understood.
- A study of 53 thyroid surgery patients found that BDE-209 was the most common PBDE in plasma, and higher levels of BDE-100 were associated with altered thyroid hormone (FT3) levels, suggesting possible interference with thyroid function.
- While certain PBDEs showed correlations with aggressive thyroid cancer characteristics, no significant links were found between these chemicals and genetic mutations related to cancer, highlighting the need for larger studies to clarify their potential role in thyroid cancer development.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!