Results 131 to 140 of about 55,944 (177)

Hydrothermal decomposition of polychlorinated biphenyls

Environmental Science & Technology, 1980
Decomposition of polychlorinated biphenyls (PCBs) by dechlorination was studied with a microautoclave. PCBs were decomposed completely in the presence of a methanol and sodium hydroxide solution under hydrothermal conditions of 300–320 °C and 180 kg/cm2 pressure.
Takaji Yasui, Nakamichi Yamasaki, Kiyoshi Matsuoka   +2 more
openaire   +2 more sources

Neurotoxicity of Polychlorinated Biphenyls [PDF]

, 1992
Polychlorinated biphenyls (PCBs) are members of a large class of organic compounds known as halogenated aromatic hydrocarbons. This class of compounds also includes 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) and 2,3,7,8-tetrachlorinated dibenzofuran (TCDF) (Fig. 1).
William Shain, Richard F. Seegal
openaire   +1 more source

Polychlorinated Biphenyls in the Global Ecosystem

Nature, 1968
Polychlorinated biphenyls are widely dispersed in the global ecosystem, and are powerful inducers of hepatic enzymes which degrade oestradiol. Together with other chlorinated biocides, such as DDT, they could account for a large part of the aberration in calcium metabolism which has been observed in many species of birds since the Second World War.
R. W. Risebrough, M N Kirven, P Rieche, David B. Peakall, Steven G. Herman   +4 more
openaire   +3 more sources

Strategies for bioremediation of polychlorinated biphenyls

Applied Microbiology and Biotechnology, 2004
Polychlorinated biphenyls (PCBs) are serious environmental pollutants that threaten both the natural ecosystem and human health. For remediation of environments contaminated with PCBs, several approaches that exploit the potential of microbes to degrade PCBs have been developed.
Yoshiyuki Ohtsubo, Masataka Tsuda, Toshiaki Kudo, Yuji Nagata   +3 more
openaire   +3 more sources

Polychlorinated Biphenyls (PCBs)

2020
Polychlorinated biphenyls (PCBs) belong to a broad family of man-made organic chemicals that due to their non-flammability, chemical stability, high boiling point, and electrical insulating properties, were used in hundreds of industrial applications.
Marek Biziuk, Angelika Beyer
openaire   +2 more sources

Polychlorinated biphenyls in honey bees

Bulletin of Environmental Contamination and Toxicology, 1987
Honey bees (Apis mellifera L.) may traverse a radius of several miles from their hives and contact innumerable surfaces during their collection of nectar, pollen, propolis and water. In the process, they may become contaminated with surface constituents which are indicative of the type of environmental pollution in their particular foraging area. Honey
Cheryl B. Littman, Walter H. Gutenmann, Donald J. Lisk, Thomas W. Culliney, Roger A. Morse   +4 more
openaire   +3 more sources

Phytoremediation of Polychlorinated Biphenyls

2006
MARTINA MACKOVA, DIANE BARRIAULT, KATERINA FRANCOVA, MICHEL SYLVESTRE, MONIKA MODER, BLANKA VRCHOTOVA, PETRA LOVECKA, JITKA NAJMANOVA, KATERINA DEMNEROVA, MARTINA NOVAKOVA, JAN REZEK AND TOMAS MACEK 1 Dept. Biochemistry and Microbiology., Faculty of Food and Biochemical Technology, ICT Prague, Technicka 3, Prague, 166 28 Czech Republic, 2 Dept.
Michel Sylvestre, Tomas Macek, Martina Novakova, Monika Möder, Diane Barriault, Martina Mackova, Petra Lovecká, Katerina Demnerova, Jan Rezek, Katerina Francova, Blanka Vrchotova, Jitka Najmanova   +11 more
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Polychlorinated biphenyls and their biodegradation

Process Biochemistry, 2005
Polychlorinated biphenyls (PCBs) are stable organic molecules that were widely used during 1930s and 1940s. Because of their widespread use, PCBs have entered the environment through both legal and illegal use and disposal and are persistent in the environment contaminating various environmental matrices worldwide. The environmental persistence of PCBs
Donna Marie G. Taleon, Joseph Auresenia, Josephine Borja, Susan M. Gallardo   +3 more
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The mass spectra of polychlorinated biphenyls

Journal of the Chemical Society, Perkin Transactions 1, 1972
The mass spectra of several di- and tetra-chlorobiphenyls suggested randomization of chlorine over both phenyl rings in the molecular ion prior to fragmentation. The exceptions, 2,2′- and 2,6-dichloro-, 2,2′,4,4′-, 2,2′,5,5′-, 2,3,5,6-, and 2,2′,6,6′-tetrachloro-biphenyls, all contain two or more chlorine atoms ortho to the Ph–Ph bond and their ...
Stephen Safe, Otto Hutzinger
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Polychlorinated biphenyls inventory in Belarus

Journal of Environmental Management, 2008
Polychlorinated biphenyls (PCB) inventory is a key element of the ecologically sound management of these dangerous chemicals. This article presents the findings of the large-scale PCB inventory project that was implemented in Belarus in 2003-2004. Data on PCB-containing equipment of more than 2000 enterprises was recorded: trademarks; volumes of PCBs ...
Sergey Kakareka, Tamara Kukharchyk
openaire   +3 more sources