Pcb Congener Articles & Analysis
37 articles found
Application: EPA Method 8082A – Chromatographic Analysis of Polychlorinated Biphenyls (PCBs) Method 8082A is used to determine the concentrations of polychlorinated biphenyls (PCBs) as Aroclors or as individual PCB congeners in extracts from solid and aqueous matrices. ...
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In this research, the levels of polychlorinated biphenyls (PCBs) were investigated in the marine sediments of Asaluyeh harbor, in the Persian Gulf. ...
The most bioaccumulative compounds (biomagnification factor >5) included p,p'‐DDE, total PCBs, total PBDEs, and BDE congeners 47, 99, 100 and 154. This analysis suggested that alternative‐brominated flame‐retardants and other compounds (methoxytriclosan) are not appreciably biomagnifying. A multivariate analysis of similarity indicated major differences in ...
We explored the association between the hepatic levels of e‐waste derived halogenated contaminants, including polychlorinated biphenyls (PCBs), polybrominated diphenyl ethers (PBDEs) and polybrominated biphenyls (PBBs), and hepatic ethoxyresorufin‐O‐deethylase (EROD) activity of the common kingfisher (Alcedo atthis) from an e‐waste site and two reference sites in South China. The ...
The Anacostia River is a 456km2 tributary of the tidal freshwater Potomac River that includes the city of Washington DC where edible fish are highly contaminated with PCBs and chlordane. From 1999 to 2011 Corbicula were collected for ABM from a Potomac reference site and translocated in cages placed at 45 sites in the tidal and nontidal Anacostia watershed. ...
The extract that was produced had low background, and could be analyzed by GC/ECD for a full range of PCB congeners. Experimental Cod liver oil was purchased locally and spiked at 10 ng/g with 19 different PCB congeners ranging from mono to deca-chlorinated. ...
The polychlorinated biphenyls (PCB) and polyaromatic hydrocarbons (PAH) are among the most commonly analysed compound classes in environmental analysis. This article demonstrates how hydrogen carrier gas can be used in place of helium for GC-MS/MS analysis of these compounds. Analysis of polyaromatic hydrocarbons (PAH) is typically conducted using HPLC with UV- and fluorescence detection. ...
To investigate whether Sediment Quality Guidelines (SQG) for PCBs in Canada and British Columbia achieve their objective of protecting ecosystems, we measured and compiled concentrations of PCB congeners in sediments, bivalves, crustaceans, fish and marine mammals from three areas off the pacific coast of British Columbia, Canada. ...
Environmental Protection Agency (EPA) develops methods and tools for evaluating risk management strategies for sediments contaminated with polychlorinated biphenyls (PCBs), polycyclic aromatic hydrocarbons (PAHs), and other legacy pollutants. ...
We analyzed metals and trace elements, organochlorine (OC) pesticides, polychlorinated biphenyls (PCBs), and polychlorinated dibenzo‐dioxins and polychlorinated dibenzofurans (PCDD‐Fs) in adults, nestlings, and eggs of the affected population; we also tested local bird seed for OC pesticides. ...
To address PRC expense, this investigation (1) compared the performance of inexpensive PRCs (deuterated PAHs) and expensive PRCs (13C‐labelled PCBs) to estimate dissolved PCB concentrations in freshwater and marine deployments, and (2) evaluated the use of smaller quantities of PRC relative to regular amounts used for estimating dissolved PAH and ...
We compared the distributions of the congeners of polychlorinated biphenyls (PCBs) detected in whole‐body samples of burbot (Lota lota) from Great Slave Lake and Lake Erie. ...
These declines are consistent with regional contaminant trends in other species. Concentrations of PCBs were higher in herring gull (Larus argentatus) than black‐crowned night‐heron eggs collected from Green Bay in 2010; PCB concentrations in double‐crested cormorant and tree swallow eggs were intermediate. The estimated toxicity of the PCB ...
The present study examined the relative contributions of chemical hydrophobicity (KOW) and habitat use as factors regulating variability in polychlorinated biphenyl (PCB) congener bioaccumulation in three lower trophic level cyprinid species across spatial and temporal scales. ...
The benthic‐associated food web clearly reflected local PCB contamination, but the high PCB concentrations found in some ringed seals remained unexplained. ...
Polychlorinated biphenyls (PCBs) were quantified in liver tissues of bull sharks (Carcharhinus leucas) ranging in age from 3 yr. ...
In the present study, polychlorinated biphenyls (PCBs), polybrominated diphenyl ethers (PBDEs), and 2 alternative brominated flame retardants (BFRs)—decabromodiphenyl ethane (DBDPE) and 1,2‐bis(2,4,6‐tribromophenoxy) ethane (BTBPE)—were investigated in the biosphere reserve and a reference site by using the kingfisher (Alcedo atthis) as a bioindicator. ...
Chicken (Gallus domesticus) embryonic exposure in ovo to a 58 congener PCB mixture resulted in teratogenic heart defects in chick embryos at critical heart developmental stages Hamburger Hamiltion (HH) 10, 16, and 20. ...
A 58‐congener polychlorinated biphenyl (PCB) mixture based on contaminant analysis of spotted sandpiper eggs collected along the Upper Hudson River, New York in 2004 was used to study in ovo PCB effects on cardiac development in the domestic chicken. Fertile eggs were injected prior to incubation with the following doses of the ...
In the present study, the authors used single‐layered, low‐density polyethylene samplers (PEs) to measure total PCB concentrations, congener profiles, and enantiomeric fractions (EFs) in a contaminated stream and to provide multiple lines of evidence for assessing ongoing inputs of PCB. ...