Polychlorinated biphenyl - Wikipedia
网页Polychlorinated biphenyls (PCBs) are organochlorine compounds with the formula C 12 H 10−x Cl x; they were once widely used in the manufacture of carbonless copy paper, as heat transfer fluids, and as dielectric and coolant fluids for electrical equipment. [2]
Learn about Polychlorinated Biphenyls | US EPA
网页2024年7月26日 · What Are PCBs? PCBs are a group of man-made organic chemicals consisting of carbon, hydrogen and chlorine atoms. The number of chlorine atoms and their location in a PCB molecule determine many of its physical and chemical properties. PCBs have no known taste or smell, and range in consistency from an oil to a waxy solid.
Polychlorinated Biphenyls (PCBs) | US EPA
网页2024年9月9日 · What are PCBs? Health effects of PCBs; PCB laws and regulations; 2023 PCB Final Rulemaking; Policy and guidance for PCB issues; Benefits of the PCB Cleanup and Disposal Program; Inadvertent PCBs
Polychlorinated Biphenyls (PCBs) | Public Health Statement ...
网页What are PCBs? PCBs are a group of synthetic organic chemicals that can cause a number of different harmful effects. There are no known natural sources of PCBs in the environment. PCBs are either oily liquids or solids and are colorless to light yellow. Some PCBs are volatile and may exist as a vapor in air. They have no known smell or taste.
What are PCBs? - NOAA's National Ocean Service
网页2024年6月16日 · PCBs, or polychlorinated biphenyls, are industrial products or chemicals. PCB contamination is high in the Housatonic River and New Bedford Harbor in Massachusetts. According to the EPA, PCBs belong to a broad family of human-created organic chemicals known as chlorinated hydrocarbons.
PCBs - a forgotten legacy? - UNEP - UN Environment Programme
网页2016年11月8日 · What are PCBs? PCBs, or polychlorinated biphenyls, are a group of POPs, toxic, man-made, hazardous organic chemicals that have dangerous effects on the environment and our health.
What Are Polychlorinated Biphenyls (PCBs)? - Agency for Toxic ...
网页PCBs are manufactured chemicals that were produced for nearly 50 years in the United States before they were banned in 1977. PCBs were banned because of their potential carcinogenicity.