Contaminated By Pcbs
Mostrando 1-12 de 14 artigos, teses e dissertações.
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1. AVALIAÇÃO DAS NORMAS DE ENSAIO APLICADAS NA QUANTIFICAÇÃO DE PCBs EM ÓLEO ISOLANTE
Polychlorinated biphenyls (PCBs) were widely used between 1940 and 1970 as an insulating fluid for transformers and capacitors. However, they are bioaccumulative and potentially carcinogenic and, according to the 2001 Stockholm Convention, must be eliminated by 2025. In Brazil, they have been gradually eliminated but contaminated equipment remains. The Brazi
Quím. Nova. Publicado em: 2015-05
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2. RESÍDUOS DE BIFENILOS POLICLORADOS EM ARROZ E FEIJÃO DO ESTADO DO RIO GRANDE DO SUL / RESIDUES OF POLYCHLORINATED BIPHENYL IN RICE AND BEANS IN THE STATE OF RIO GRANDE DO SUL
Polychlorinated biphenyls (PCBs) were commercially produced between 1929 and the mid 1980s with industrial purposes. The same properties that interested industrially, as chemical inertness, high dielectric constant, resistance to burning; were also responsible for the spreading of the PCBs in all of the environmental compartments, mainly due to the inadequat
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/09/2011
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3. Treatment of materials contaminated with polychlorinated biphenyls (PCBs) by conventional and supercritical fluid xxtraction / Tratamento de materiais contaminados com bifenilas policloradas (PCBS) via extração convencional e fluído supercrítico
A descontaminação de materiais tem sido tema de vários estudos. Um dos fatores que aumenta a poluição é a falta de responsabilidade no descarte do lixo tóxico, como por exemplo, a presença de PCBs (Bifenilas policloradas) no meio ambiente. Nos regulamentos brasileiros, o material contaminado com PCBs nas concentrações acima de 50 ppm deve ser armaz
Publicado em: 2008
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4. Destinação final de transformadores elétricos contaminados com PCBs, via tecnologia de descontaminação e reciclagem dos metais: um ganho ambiental, econômico e da saúde ocupacional / Final destination of PCBs contaminated electrical transformers, through a technology of decontamination and metallic components recycling: a gain for the environment, for the occupational health and finance
The electrical transformers contains Polychlorinated Biphenyls (PCBs), at the end of their lifespan and or by legal imposing, must have theirs disposal in environmentally appropriate conditions. This thesis will be based upon the authors previous research and study, which resulted in an industrial unit named TECORI, located in Pindamonhangaba, SP. It has bee
Publicado em: 2007
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5. CONSTRUCTION AND DETECTION OF THE RECOMBINANT RHODOCOCCUS SP. STRAIN RHA1 FOR MINERALIZATION OF PCBs IN SOIL
PCBs are still one of the most important environmental pollutants. We developed a strategy of combining the biphenyl and 4-chlorobenzoate (4-CBA) degradation pathways into the same microorganism for PCB degradation. The genes from Arthrobacter globiformis strain KZT1 responsible for transforming 4-CBA into 4- hydroxybenzoate were sequenced and their products
Publicado em: 2000
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6. Oculodermatological findings in workers with occupational exposure to polychlorinated biphenyls (PCBs).
Oculodermatological findings, such as hypersecretion of the Meibomian glands, swelling of the upper eyelids and hyperpigmentation of the conjunctivae are considered typical of "PCB poisoning." They were common clinical manifestations of yusho and yu-cheng, two epidemics in Japan and Taiwan caused by the ingestion of rice cooking oil contaminated with polychl
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7. Construction and applications of DNA probes for detection of polychlorinated biphenyl-degrading genotypes in toxic organic-contaminated soil environments.
Several DNA probes for polychlorinated biphenyl (PCB)-degrading genotypes were constructed from PCB-degrading bacteria. These laboratory-engineered DNA probes were used for the detection, enumeration, and isolation of specific bacteria degrading PCBs. Dot blot analysis of purified DNA from toxic organic chemical-contaminated soil bacterial communities showed
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8. Occupational exposure to polychlorinated biphenyls in electrical workers. I. Environmental and blood polychlorinated biphenyls concentrations.
Industrial exposure to polychlorinated biphenyls (PCBs) and internal dose were investigated in 80 worker exposed for many years to PCB mixtures with a 42% chlorine content (Pyralene 3010 and Apirolio). PCBs were determined by liquid gas chromatography on samples taken from workroom air, workroom surfaces and tools, the palms of the hand, and the blood of the
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9. Enhancement of Plant-Microbe Interactions Using a Rhizosphere Metabolomics-Driven Approach and Its Application in the Removal of Polychlorinated Biphenyls1[w]
Persistent organic pollutants, such as polychlorinated biphenyls (PCBs), are a global problem. We demonstrate enhanced depletion of PCBs using root-associated microbes, which can use plant secondary metabolites, such as phenylpropanoids. Using a “rhizosphere metabolomics” approach, we show that phenylpropanoids constitute 84% of the secondary metabolites
American Society of Plant Biologists.
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10. Balance measured by head (and trunk) tracking and a force platform in chemically (PCB and TCE) exposed and referent subjects.
To determine comparability of methods, postural sway was measured simultaneously with a force platform and a device that registers head (and trunk) movements (head tracking). The effects of age, sex, height, weight, shoe area, and grip strength on both measurements were examined in 162 subjects. To determine whether either method had advantages in detecting
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11. Brominated Biphenyls Prime Extensive Microbial Reductive Dehalogenation of Aroclor 1260 in Housatonic River Sediment
The upper Housatonic River and Woods Pond (Lenox, Mass.), a shallow impoundment on the river, are contaminated with polychlorinated biphenyls (PCBs), the residue of partially dechlorinated Aroclor 1260. Certain PCB congeners have the ability to activate or “prime” anaerobic microorganisms in Woods Pond sediment to reductively dehalogenate the Aroclor 126
American Society for Microbiology.
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12. Development of field application vectors for bioremediation of soils contaminated with polychlorinated biphenyls.
Field application vectors (FAVs), which are a combination of a selective substrate, a host, and a cloning vector, have been developed for the purpose of expressing foreign genes in nonsterile, competitive environments in which the gene products provide no advantage to the host. Such gene products are exemplified by the enzymes for the cometabolism of polychl