Advertisement

Topics

Are unintentionally produced polychlorinated biphenyls the main source of polychlorinated biphenyl occurrence in soils?

08:00 EDT 6th September 2018 | BioPortfolio

Summary of "Are unintentionally produced polychlorinated biphenyls the main source of polychlorinated biphenyl occurrence in soils?"

The production of polychlorinated biphenyls (PCBs) has been banned globally for decades, but PCB concentrations in environmental media remain relatively high, especially in urban areas. Emissions estimates, studies of soil gradients between urban and rural areas, and quantitative identification of regional sources of PCBs in soils are necessary for understanding the environmental behavior of PCBs. In this study, regional PCB emissions were estimated at a resolution of 10 km × 10 km, and the spatial distribution of soil PCBs from urban to rural areas was studied along the Bohai and Yellow Sea regions. Compared with rural areas, mean PCB concentrations in urban soils (20.7 ng/g) were found to be higher, and concentrations decreased with distance from the city. Across both latitude and longitude directions, high PCB emissions in urban areas matched the distribution of total PCB concentrations in soils. The concentrations of the pollutants PCB28, PCB52, PCB101, PCB118, PCB138, PCB153, and PCB180 in soils originated from 5-year emissions, and accounted for 97%, 95%, 84%, 81%, 58%, 57%, and 27% of the total emissions, respectively. Unintentionally produced PCB (UP-PCB) emissions, which are mainly derived from cement (42%), pig iron (37%), crude steel (18%), and rolled steel (3%) industries, are the major contributors to PCBs in soils. Further identification of the sources and fates of PCBs requires a combination of field, laboratory, and modeling efforts.

Affiliation

Journal Details

This article was published in the following journal.

Name: Environmental pollution (Barking, Essex : 1987)
ISSN: 1873-6424
Pages: 492-500

Links

DeepDyve research library

PubMed Articles [11396 Associated PubMed Articles listed on BioPortfolio]

Hepatic signalling disruption by pollutant Polychlorinated biphenyls in steatohepatitis.

Polychlorinated biphenyl-mediated steatohepatitis has been shown to be due in part to inhibition of epidermal growth factor receptor (EGFR) signalling. EGFR signalling regulates many facets of hepatoc...

Preliminary investigation of polychlorinated dibenzo-p-dioxin and dibenzofuran, polychlorinated naphthalene, and dioxin-like polychlorinated biphenyl concentrations in ambient air in an industrial park at the northeastern edge of the Tibet-Qinghai Plateau, China.

Ambient air samples collected in an industrial park at the northeastern edge of the Tibet-Qinghai Plateau (China) were analyzed for polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs), polyc...

Temporal trends in dioxin-like polychlorinated biphenyl concentrations in serum from the general population of Shandong Province, China: A longitudinal study from 2011 to 2017.

Temporal changes in the concentrations of dioxin-like (DL) polychlorinated biphenyls (PCBs) in environmental and biological matrices in China are not well understood. We determined the DL-PCB concentr...

Association of maternal serum concentration of hydroxylated polychlorinated biphenyls with maternal and neonatal thyroid hormones: The Hokkaido birth cohort study.

Evidence on the toxicity of hydroxylated metabolites of polychlorinated biphenyls (OH-PCBs) for thyroid hormones (TH) is limited, and the underlying mechanism remains unknown.

A nested case-control study of polychlorinated biphenyls, organochlorine pesticides, and thyroid cancer in the Janus Serum Bank cohort.

Polychlorinated biphenyls (PCBs) and organochlorine pesticides have been associated with altered thyroid hormone levels in humans, but their relationship with thyroid cancer is unknown.

Clinical Trials [2844 Associated Clinical Trials listed on BioPortfolio]

Environment and Reproductive Health

The purpose of the study is to investigate the relationship between environmental agents and reproductive health. Environmental agents of interest include exposure to chemicals such as pol...

HOME Study (Health Outcomes and Measures of the Environment Study)

The goal of the HOME Study is to quantify the impact of low-level fetal and early childhood exposures to environmental toxicants (lead, mercury, pesticides, polychlorinated biphenyls (PCBs...

Weight Loss Aid in an Exposed Population

The study will explore whether if the use of Orlistat results in weight loss that is accompanied by a reduction in the body burdens of polybrominated biphenyls (PBB) and other Persistent O...

DM-CHOC-PEN Plus Radiation for Brain Tumors

4-Demethyl-4-cholesteryloxycarbonylpenclomedine (DM-CHOC-PEN) is a polychlorinated pyridyl cholesterol carbonate that is lipophilic, electrically neural, crosses the blood brain barrier (B...

DM-CHOC-PEN for Brain Tumors in AYA Subjects

4-Demethyl-4-cholesteryloxycarbonylpenclomedine (DM-CHOC-PEN) is a polychlorinated pyridyl cholesterol carbonate that is lipophilic, electrically neural, crosses the blood brain barrier (B...

Medical and Biotech [MESH] Definitions

Industrial products consisting of a mixture of chlorinated biphenyl congeners and isomers. These compounds are highly lipophilic and tend to accumulate in fat stores of animals. Many of these compounds are considered toxic and potential environmental pollutants.

A mixture of polychlorinated biphenyls that induces hepatic microsomal UDP-glucuronyl transferase activity towards thyroxine.

Cytoplasmic proteins that bind certain aryl hydrocarbons, translocate to the nucleus, and activate transcription of particular DNA segments. AH receptors are identified by their high-affinity binding to several carcinogenic or teratogenic environmental chemicals including polycyclic aromatic hydrocarbons found in cigarette smoke and smog, heterocyclic amines found in cooked foods, and halogenated hydrocarbons including dioxins and polychlorinated biphenyls. No endogenous ligand has been identified, but an unknown natural messenger with a role in cell differentiation and development is suspected.

Biphenyl compounds which are extensively brominated. Many of these compounds are toxic environmental pollutants.

Dibenzodioxin derivatives that contain multiple chloride atoms bound to the benzene ring structures.

Advertisement
Quick Search
Advertisement
Advertisement

 


DeepDyve research library

Searches Linking to this Article