نتایج جستجو برای: polybrominated biphenyls

تعداد نتایج: 7327  

Journal: :Biometrics 2016
Xiaoyan Sun Limin Peng Amita Manatunga Michele Marcus

In many observational longitudinal studies, the outcome of interest presents a skewed distribution, is subject to censoring due to detection limit or other reasons, and is observed at irregular times that may follow a outcome-dependent pattern. In this work, we consider quantile regression modeling of such longitudinal data, because quantile regression is generally robust in handling skewed and...

Journal: :Environmental science & technology 2005
Wenlu Song Justin C Ford An Li Neil C Sturchio Karl J Rockne Dave R Buckley William J Mills

Sediment cores were taken in 2002 in Lakes Ontario and Erie at four locations. A total of 48 sediment samples were characterized, dated using 210Pb, and analyzed for 10 congeners of polybrominated diphenyl ethers (PBDEs) including BDE209 as well as 39 congeners of polychlorinated biphenyls (PCBs). The surficial concentrations of nine tri- through hepta-BDE congeners (sigma9PBDE) are 4.85 and 6....

Journal: :Environmental science & technology 2009
Adrian M H Debruyn Lizanne M Meloche Christopher J Lowe

Marine mussels (Modiolus modiolus) and sediment from 14 stations near a municipal outfall and three reference locations were analyzed for polybrominated diphenyl ethers (PBDEs) and polychlorinated biphenyls (PCBs) to evaluate and compare patterns of bioaccumulation of individual congeners between these two groups of chemicals. Of the 47 PBDEs and 209 PCBs analyzed, 34 PBDE and 153 PCB congeners...

Journal: :Lancet 1978
L B Brilliant K Wilcox G Van Amburg J Eyster J Isbister A W Bloomer H Humphrey H Price

In 1973 and 1974, several thousand Michigan dairy farms were contaminated by polybrominated biphenyls (P.B.B.) as the result of an industrial accident. An unknown quantity of contaminated meat and dairy products entered the food chain before contaminated farms were quarantined. To determine the extent of human exposure, P.B.B. concentrations were measured in human breast milk, which was collect...

Journal: :Environmental Health Perspectives 2004
Andreas Sjödin Richard S Jones Jean-François Focant Chester Lapeza Richard Y Wang Ernest E McGahee Yalin Zhang Wayman E Turner Bill Slazyk Larry L Needham Donald G Patterson

Six polybrominated diphenyl ethers (PBDEs), one hexabromobiphenyl [polybrominated biphenyl (PBB)], and one hexachlorobiphenyl [polychlorinated biphenyl (PCB)] were measured in 40 human serum pools collected in the southeastern United States during 1985 through 2002 and in Seattle, Washington, for 1999 through 2002. The concentrations of most of the PBDEs, which are commercially used as flame re...

2017
Godwin O. Olutona John A. O. Oyekunle Aderemi O. Ogunfowokan Olalekan S. Fatoki

This study assessed the concentrations of polybrominated diphenylethers (PBDEs) in stream water obtained from Asunle stream, an adjoining stream of the Obafemi Awolowo University dumpsite. Water samples were collected for a period of eight months from six different locations comprising of a spot upstream in an uphill area relative to the refuse dumpsite and five others downstream along the stre...

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