Topics

Sedimentary records of polychlorinated biphenyls in the East China Marginal Seas and Great Lakes: Significance of recent rise of emissions in China and environmental implications.

08:00 EDT 27th July 2019 | BioPortfolio

Summary of "Sedimentary records of polychlorinated biphenyls in the East China Marginal Seas and Great Lakes: Significance of recent rise of emissions in China and environmental implications."

Polychlorinated biphenyls (PCBs) in dated sediment cores from the East China Marginal Seas (ECMSs) and the chronology of the net fluxes to sediments were analyzed. The accumulation of 27 PCBs (ΣPCBs) in the ECMS sediments is about 5-26 ng cm, with the net depositional fluxes of ΣPCBs 10 times lower than those observed in the Great Lakes during the 1960s-1970s. Exponential increases in PCB deposition to the ECMS sediments since the 1990s were observed, which closely follows the fast growth of PCB emissions from industrial thermal processes and e-waste related sources in China. Recent PCB fluxes to the study sites in the ECMSs and the Great Lakes are comparable; the former surged forward with a rising tendency, while the latter showed continued decline after the late 1970s. Due to the different PCB application histories and sources between the two regions, the ECMS sediments may remain as a net sink for land-derived PCBs, while sediments in the Great Lake may have been acting as a secondary source releasing PCBs to water. A higher proportion of trichlorobiphenyls in the ECMS sediments than the Great Lakes was indicated, which may imply the net transport of atmospheric PCBs from China.

Affiliation

Journal Details

This article was published in the following journal.

Name: Environmental pollution (Barking, Essex : 1987)
ISSN: 1873-6424
Pages: 112972

Links

DeepDyve research library

PubMed Articles [4966 Associated PubMed Articles listed on BioPortfolio]

Exposure to dietary polychlorinated biphenyls and dioxins, and its relationship with subclinical coronary atherosclerosis: The Aragon Workers' Health Study.

Experimental evidence has revealed that exposure to polychlorinated biphenyls (PCBs) and dioxins directly impairs endothelial function and induces atherosclerosis progression. In the general populatio...

The health concern of polychlorinated biphenyls (PCBs) in a notorious e-waste recycling site.

Polychlorinated biphenyls (PCBs) remain a relatively high level in e-waste recycling regions 3 decades after ban on use. Illegal recycling activities cunningly moved under the environmental law enforc...

Risk of breast cancer and adipose tissue concentrations of polychlorinated biphenyls and organochlorine pesticides: a hospital-based case-control study in Chinese women.

Polychlorinated biphenyls (PCBs), dichlorodiphenyltrichloroethane (DDT), and dichlorodiphenyldichloroethylene (DDE) are suspected to be associated with breast cancer risk, but the results are controve...

Polybrominated diphenyl ethers and polychlorinated biphenyls in mangrove sediments of Shantou, China: Occurrence, profiles, depth-distribution, and risk assessment.

Surface and columnar sediments were collected from four mangrove Wetlands in Shantou coastal areas of South China to investigate the level, distribution, possible sources and ecotoxicological risks of...

A longitudinal study of polychlorinated biphenyls and neuropsychological function among older adults from New York State.

Cross-sectional studies have linked greater polychlorinated biphenyl (PCB) exposure to adverse neuropsychological effects in older adults, including learning, memory, and depressive symptoms. However,...

Clinical Trials [2374 Associated Clinical Trials listed on BioPortfolio]

Baseline Investigation of Patients With Cardiac Arrest in China

BASIC is a perspective, multicentre and large-scale registry focusing on of patients suffering a cardiac arrest in China. The aims of the study are to establish the monitoring sites coveri...

An Observational Follow-Up Study of the Incidence of Cancer and Mortality in Patients From the SEAS (Simvastatin and Ezetimibe in Aortic Stenosis) Trial

The purpose of this extension is to observe the incidence rates of cancer, total mortality, and mortality due to cancer over a 21 month follow-up period in patients from the SEAS trial (20...

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...

Gemcitabine for Marginal Zone Lymphoma

Marginal zone lymphoma, one of the indolent lymphoma, is believed to be incurable with chemotherapy. Thus the investigators need a novel agent for marginal zone lymphoma. Gemcitabine has b...

Medical and Biotech [MESH] Definitions

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

A peninsula in Southeast EUROPE between the Adriatic and Ionian seas on the West and Aegean and Black Seas on the East. (from www.merriam-webster.com/dictionary/balkan%20peninsula)

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 geographic area of east and southeast Asia encompassing CHINA; HONG KONG; JAPAN; KOREA; MACAO; MONGOLIA; and TAIWAN.

An independent state, an archipelago in the western Persian Gulf, northwest of Qatar. It comprises low-lying islands of Bahrain (the largest), Muharraq, Sitra, and several islets. It has extensive oil fields. The name comes from the Arabic al-bahrayn, "the two seas", with reference to its lying in the middle of a bay with its "two seas" east and west of it. (From Webster's New Geographical Dictionary, 1988, p107 & Room, Brewer's Dictionary of Names, 1992, p45)

Quick Search


DeepDyve research library

Searches Linking to this Article