Polybrominated diphenyl ethers (PBDEs) have been widely used as flame retardants. The structurally related hydroxylated PBDEs (OH-PBDEs) and methoxylated PBDEs (MeO-PBDEs) occur in precipitation, surface water, wildlife, and humans. The formation of OH-PBDEs in wildlife and humans is of considerable concern due to their greater toxicities relative to PBDEs and MeO-PBDEs. Research to date sugges...

In order to assess the characteristics of polybrominated diphenyl ether (PBDEs) in atmosphere urban Jinan, eastern China, gas phase and PM2.5 were hereby sampled July 2020. The concentration composition 11 PBDEs obtained. Human exposure was evaluated by daily calculation method. During observation period, average ∑ PM 2.5 214.8±31.3 pg/m 3 , that low-PBDEs 119.1±2.1 BDE209 95.8±15.4 . Among 10 ...

Concentrations of polybrominated diphenyl ethers (PBDEs) and methoxylated (MeO-PBDEs); are reported in specimens fish notothenioids Chaenocephalus aceratus (SSI), Trematomus bernacchii (ERN), Nototheniops nudifrons (NOD) from the South Shetland Islands, Antarctica. Significant differences accumulation 2?-MeO-BDE-68 6-MeO-BDE-47 were detected among analysed species. MeO-BDEs significantly higher...

Polybrominated diphenyl ethers (PBDEs) have been intensively used as flame retardants (FRs) and have become ubiquitous environmental pollutants. PBDEs form hydroxylated PBDEs (OH-PBDEs) as metabolites. Further, some OH-PBDEs and methoxy-PBDEs (MeO-PBDEs) are natural products. These are all compounds of environmental and health concern and it is therefore important to confirm their identity and ...

Eleven house dust samples were collected in Beijing to quantify 42 different polybrominated diphenyl ethers (PBDEs). Total PBDEs concentrations ranged from 140 to 1,300 ng g(-1). The dominant PBDEs congener identified was BDE 209, which made up more than 70% of all PBDEs congeners. Concentrations of PBDEs in Chinese house dust were lower than in other countries. The most polluted areas were ele...

Polybrominated diphenyl ethers (PBDEs), a group of potential endocrine-disrupting chemicals (EDCs) have been shown to disrupt retinoid homeostasis in different species in both laboratory and field studies. However, the molecular mechanisms of interactions with the retinoic acid receptor (RAR) are not fully understood. Zebrafish have proven useful for investigating mechanisms of chemical toxicit...

Plant uptake and dissipation of weathered PBDEs in the soils of e-waste recycling sites were investigated in a greenhouse study. Eighteen PBDE congeners (tri- through deca-) were detected in the plant tissues. The proportion of lower brominated PBDEs (mono- through hexa-) in plant roots was higher than that in the soils. A concentration gradient was observed of PBDEs in plants with the highest ...

A reliable analytical method was developed here for the simultaneous separation, identification and quantification of ten polybrominated diphenyl ethers (PBDEs), nine methoxylated PBDEs (MeO-PBDEs) and ten hydroxylated PBDEs (OH-PBDEs) in various environmental matrices, including water, soil, sediment, plant, mollusk and fish. PBDEs and MeO-PBDEs were measured by gas chromatography coupled with...

Introduction Polybrominated Diphenyl Ethers (PBDEs) are a class of compounds used as flame retardants in synthetic materials whose production has been increasing substantially in the last two decades (Figure 1). Some PBDEs have shown persistent, bioaccumulative, and toxic properties (PBT). These compounds have been measured in urban and rural areas around the globe at low, but increasing levels...

Uptake, translocation and debromination of three polybrominated diphenyl ethers (PBDEs), BDE-28, -47 and -99, in maize were studied in a hydroponic experiment. Roots took up most of the PBDEs in the culture solutions and more highly brominated PBDEs had a stronger uptake capability. PBDEs were detected in the stems and leaves of maize after exposure but rarely detected in the blank control plan...