The effect of copper and its compounds on halogenation dehalogenation aromatic will be discussed in the proposed article. Cu oxidized to appropriate halides is an effective catalyst not only for synthesis halogenated benzenes or their derivatives as desired organic fine chemicals, but also undesirable formation thermodynamically stable very toxic polychlorinated polybrominated such biphenyls, d...

The harbor seal (Phoca vitulina) can serve as a useful indicator of food web contamination by persistent organic pollutants (POPs) because of its high trophic level, wide distribution in temperate coastal waters of the Northern Hemisphere, and relative ease of capture. In 1996 through 1997, we live-captured 60 harbor seal pups from three regions, spanning remote (Queen Charlotte Strait, BC, Can...

Mass poisonings, called yusho and yu-cheng, occurred in western Japan in 1968 and central Taiwan in 1979, respectively. These occurrences were separately caused by ingestion of rice oils contaminated with polychlorinated biphenyls (PCBs), polychlorinated dibenzofurans (PCDFs) and polychlorinated quaterphenyls. The total intakes of PCBs and PCDFs by the patients were calculated to be, on the ave...

Exposure to toxins following the September 11, 2001 attack on and collapse of the World Trade Center (WTC) is of particular concern given the ultra fine particulate dust cloud, high temperature combustion, and months-long fire. Firefighters, paramedics, police and sanitation crews are among the approximately 40000 personnel who labored for weeks and months on rescue and cleanup efforts. Many of...

The osprey (Pandion haliaetus) population nesting along the main stem Willamette River and lower Santiam River was first studied to evaluate contaminants and reproductive rates in 1993 when 78 occupied nests were present. By 2001, the population increased to 234 occupied nests, a 13.7% annual rate of population increase. A sample egg was collected from each of a series of nests along the Upper ...

40 SUPERCRITICALWATER OXIDATION REACTION PATHWAYAND KINETICS OF POLYCHLORINATED BIPHENYLS G.Anitescu and L.L. Tavlarides Department of Chemical Engineering and Materials Science, 220 Hinds Hall, Syracuse University, Syracuse, NY 13244; Phone: (315)443-1917; Fax: (315)443-1243. ABSTRACT Supercritical water oxidation (SCWO) reaction is effective in destruction of polychlorinated biphenyls (PCBs) ...

OBJECTIVES To clarify the association between dioxin concentrations in breast milk and food group intake in herbicide-sprayed and nonsprayed areas in Vietnam. METHODS This survey was conducted in August 2007 in sprayed and nonsprayed areas, respectively. The interviews were performed using a questionnaire to obtain information on personal characteristics and usual dietary intake. Eighty mothe...

The records of the health effects caused by some accidental exposure and findings from medical examination in cases exposed to polybrominated biphenyls (PBB) as well as to polychlorinated biphenyls (PCB) and their derivatives polychlorinated dibenzofurans (PCDF) and dibenzodioxins (PCDD) have provided some information for the recognition and classification of their toxicity in humans. The most ...