Using population demographic parameters to assess impacts of two polybrominated diphenyl ethers (BDE-47, BDE-209) on the rotifer Brachionus plicatilis

2015 ◽  
Vol 119 ◽  
pp. 106-115 ◽  
Author(s):  
Jingjing Sha ◽  
You Wang ◽  
Hongmei Chen ◽  
Ming Wang ◽  
Hong Wang ◽  
...  
Keyword(s):  
Polybrominated Diphenyl Ethers ◽  
Brachionus Plicatilis ◽  
Demographic Parameters ◽  
Diphenyl Ethers ◽  
Rotifer Brachionus Plicatilis ◽  
Population Demographic ◽  
Bde 209

The Toxic Effects of Polybrominated Diphenyl Ethers on Rotifer Branchionus plicatilis

2013 ◽  
Vol 807-809 ◽  
pp. 385-391 ◽  
Author(s):  
Jing Zhang ◽  
You Wang ◽  
Xue Xi Tang ◽  
Kuan Fang
Keyword(s):  
Treatment Group ◽  
Life Span ◽  
Polybrominated Diphenyl Ethers ◽  
Brachionus Plicatilis ◽  
Toxic Effects ◽  
Oxygen Species ◽  
Treatment Groups ◽  
Diphenyl Ethers ◽  
All Treatment ◽  
Bde 209

In the current study, two of the most environmentally relevant Polybrominated diphenyl ethers (PBDEs) were individually evaluated for toxic effects on rotifer Brachionus plicatilis. The results showed that the life span declined significantly in all treatment groups (0.05mg/L, 0.1mg/L, 0.2mg/L BDE-47 and BDE-209) compared to the control, and BDE-47 caused significant decrease compared to BDE-209 at 0.2mg/L treatment group. Significant increases of intracellular levels of reactive oxygen species (ROS) occurred in all treatment groups except for 0.05mg/L BDE-209 treatment group compared to the control, and significant increases were observed in all BDE-47 treatment groups compared to the equivalent treatment groups of BDE-209. Meanwhile significant increases of intracellular calcium levels ([Ca2+]in) occurred in 0.1mg/L, 0.2mg/L BDE-47 and 0.2mg/L BDE-209 treatment groups compared to the control, and BDE-47 cause significant increase compared to BDE-209 at 0.2mg/L treatment group. The present study demonstrated that life span, ROS and Ca2+ were involved in PBDEs toxic effects, and toxicities of BDE-47 were higher than BDE-209. Otherwise, the toxic effects in both BDE-47 and BDE-209 were similar, which suggest that the toxic effects of two PBDEs congeners may be caused by the same toxic mechanism of action.

scholarly journals A Fluorescence-Based Method for Rapid and Direct Determination of Polybrominated Diphenyl Ethers in Water

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
Huimei Shan ◽  
Chongxuan Liu ◽  
Zheming Wang ◽  
Teng Ma ◽  
Jianying Shang ◽  
...  
Keyword(s):  
Fluorescence Spectroscopy ◽  
Polybrominated Diphenyl Ethers ◽  
Environmental Variables ◽  
Fluorescence Spectra ◽  
Direct Determination ◽  
Spectral Signal ◽  
Diphenyl Ethers ◽  
Spectral Profiles ◽  
Bde 209

A new method was developed for rapid and direct measurement of polybrominated diphenyl ethers (PBDEs) in aqueous samples using fluorescence spectroscopy. The fluorescence spectra of tri- to deca-BDE (BDE 28, 47, 99, 153, 190, and 209) commonly found in environment were measured at variable emission and excitation wavelengths. The results revealed that the PBDEs have distinct fluorescence spectral profiles and peak positions that can be exploited to identify these species and determine their concentrations in aqueous solutions. The detection limits as determined in deionized water spiked with PBDEs are 1.71–5.82 ng/L for BDE 28, BDE 47, BDE 190, and BDE 209 and 45.55–69.95 ng/L for BDE 99 and BDE 153. The effects of environmental variables including pH, humic substance, and groundwater chemical composition on PBDEs measurements were also investigated. These environmental variables affected fluorescence intensity, but their effect can be corrected through linear additivity and separation of spectral signal contribution. Compared with conventional GC-based analytical methods, the fluorescence spectroscopy method is more efficient as it only uses a small amount of samples (2–4 mL), avoids lengthy complicated concentration and extraction steps, and has a low detection limit of a few ng/L.

scholarly journals Simultaneous Determination and Preliminary Source Estimation of Polychlorinated Biphenyls and Polybrominated Diphenyl Ethers in Road Dust from Northern Vietnam

2021 ◽  
Vol 37 (1) ◽  
Author(s):  
Hoang Quoc Anh ◽  
Shin Takahashi ◽  
Pham Thi Ngoc Mai ◽  
Thai Thu Thuy ◽  
Nguyen Thi Thanh Huong
Keyword(s):  
Polychlorinated Biphenyls ◽  
Polybrominated Diphenyl Ethers ◽  
Road Dust ◽  
Northern Vietnam ◽  
Industrial Dust ◽  
Source Estimation ◽  
Diphenyl Ethers ◽  
Outdoor Dust ◽  
Bde 209

Concentrations of seven indicator polychlorinated biphenyls (Ʃ7PCBs) and eight predominant polybrominated diphenyl ethers (Ʃ8PBDEs) were examined in outdoor dust samples collected from some representative areas in northern Vietnam, including a core urban area of Hanoi City, an industrial park in Thai Nguyen Province, and a rural area in Bac Giang Province. Levels (median and range) of Ʃ7PCBs and Ʃ8PBDEs in our dust samples were 2.8 (0.028–22) and 11 (0.55–52) ng/g, respectively. Concentrations of PCBs and PBDEs in the urban and industrial dust samples were significantly higher than those measured in the rural ones, suggesting the role of urbanization-industrialization processes on the emission of these pollutants. PCBs exhibited specific profiles in the industrial dusts with significant proportions of low-chlorinated congeners such as CB-28 and CB-52, while the remaining samples were more contaminated by heavier compounds such as CB-118, CB-138, and CB-153. For PBDEs, BDE-209 was the most predominant congener in all the samples. Emission souces of PCBs and PBDEs in our dust samples were estimated to be household, traffic, and industrial activities. Human exposure to PCBs and PBDEs in outdoor dusts was estimated, implying relatively low health risk.

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.

scholarly journals Occurrence, Compositional Profiles and Health Risks of Polybrominated Diphenyl Ethers (PBDEs) in Leachate and Groundwater in and around Dumpsites in Lagos State, Nigeria

2021 ◽  
Author(s):  
Olanrewaju Olujimi ◽  
Kabirat Adegbite ◽  
Samuel Sojinu ◽  
Adegbenro Daso ◽  
Funmilola Oyebanji ◽  
...  
Keyword(s):  
Water Samples ◽  
Polybrominated Diphenyl Ethers ◽  
Endocrine Disrupting Chemicals ◽  
Elevated Concentration ◽  
Spectroscopy Analysis ◽  
Endocrine Disrupting ◽  
Lagos State ◽  
Diphenyl Ethers ◽  
Gas Chromatography Mass Spectroscopy ◽  
Bde 209

Abstract Groundwater from the communities adjoining Abule Egba (ABE), Epe (EPE), Ikorodu (IKR), Olushosun (OSH) and Solous (SOL) dumpsites in Lagos State, Nigeria were collected and analyzed for Polybrominated diphenyl ethers. Water samples were extracted using liquid-liquid extraction followed by Gas Chromatography/Mass Spectroscopy analysis using already validated standard method. PBDEs concentrations ranged from 7.1 ± 10.1 (IKR) to 78 ± 109 µgL-1 (ABE) for BDE 28; 5.4 ± 0.3 (OSH) to 31.5 ± 27.3 µgL-1 (ABE) for BDE 47; 17 ± 24 (ABE) to 183 ± 226 µgL-1 for BDE 100; 11.7 ± 16.5 (ABE) to 174 ± 217 µgL-1(EPE) for BDE 99; 117 ± 166 (ABE) to 2034 ± 2819 µg L-1 (EPE) for BDE 183; 296 ± 392 (IKR) to 4283 ± 1278 µg L-1 (EPE) for BDE 209. BDE 153 and BDE 154 were not detected in all the water samples while BDE 28 was only detected in ABE and IKR water samples. The BDE 209 was the most dominant congener in all the water samples. The cumulative HI values for children through ingestion route ranged from 4.95 E+00 (SOL) to 4.53 E+01 (EPE) while in adult, it ranged from 4.25 E+00 (SOL) to 3.88 E+01 (EPE). This study confirmed the presence of PBDEs at elevated concentration in groundwater. Since there is no regular supply of pipe-borne water in the study area, residents consume the contaminated groundwater and may therefore be exposed to endocrine disrupting chemicals. Government should provide pie-borne water for the populace and discourage people from living close to the dumpsites.

scholarly journals Sub-lethal Doses of Polybrominated Diphenyl Ethers, in Vitro, Promote Oxidative Stress and Modulate Molecular Markers Related to Cell Cycle, Antioxidant Balance and Cellular Energy Management

2019 ◽  
Vol 16 (4) ◽  
pp. 588 ◽  
Author(s):  
Simona Manuguerra ◽  
Cristóbal Espinosa Ruiz ◽  
Andrea Santulli ◽  
Concetta Messina
Keyword(s):  
Oxidative Stress ◽  
Cell Cycle ◽  
Molecular Markers ◽  
Polybrominated Diphenyl Ethers ◽  
Negative Effects ◽  
Diphenyl Ethers ◽  
And Oxidative Stress ◽  
Lethal Doses ◽  
Bde 209

In the present study, we evaluated the effects of different concentrations of the polybrominated diphenyl ethers (PBDEs) BDE-209, BDE-47 and BDE-99, on the vitality and oxidative stress of a HS-68 human cell culture exposed to the compounds for three days. The results showed that for this exposure time, only the highest concentrations produced a significant vitality reduction and oxidative stress induction (p < 0.05), measured as reactive oxygen species (ROS). Subsequently, in order to verify the effects of sub-lethal doses, cells were exposed for a longer time and data collected, after 12 and 20 days, to study ROS production and some molecular markers related to cell cycle and stress (p53, pRB, PARP, c-Jun and c-Fos), antioxidant status and proliferation (ERK, c-Jun and c-Fos), energy balance (NRF2, AMPK, HIF). Most of the biomarkers were influenced by the treatments, indicating that sub-lethal doses of PBDEs, for longer time, can enhance the production of ROS, altering the energetic metabolism, cell cycle and antioxidant balance, determining possible negative effects on the cell proliferation equilibrium.

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