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] .

6 天之前 · Some substances are generally excluded from TSCA, including but not limited to, food, drugs, cosmetics and pesticides. TSCA addresses the production, importation, use and disposal of specific chemicals including polychlorinated biphenyls (PCBs), asbestos, radon …

2025年2月14日 · The Sampling Guidance for 40 CFR 761 subparts M, O, P and R gives visual guidance to help users understand how to sample certain types of PCB waste (e.g., natural gas pipelines, PCB remediation waste after cleanup, non …

2025年2月10日 · New Changes to PCB Regulations Effective February 26, 2024 EPA finalized a number of regulatory changes that address several key issues related to implementing the PCB Cleanup and Disposal Program under the Toxic Substances Control Act. Access materials from our November 9 webinar about this rulemaking. Annual Report Form.

2024年12月4日 · 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. PCBs persist in the environment for long periods and can travel over great distances through air, water and migratory species across international boundaries.

Chemical Classification: Dioxins, Furans, PCBs (contain phenyl rings of carbon atoms), Pesticides (chemicals used for killing pests, such as rodents, insects, or plants) Summary: Polychlorinated biphenyls are mixtures of up to 209 individual chlorinated compounds (known as congeners). There are no known natural sources of PCBs.

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. Describing key characteristics in Polychlorinated Biphenyls (PCBs) exposure.

2024年9月4日 · Polychlorinated biphenyls (PCBs) are a family of manufactured chemicals that were used in multiple industrial and commercial applications because of their insulating and nonflammable properties.

2024年7月8日 · Polychlorinated biphenyls, commonly known as PCBs, are synthetic aromatic chemical compounds that do not occur naturally in the environment.

PCBs are lipophilic chemicals first produced in 1929 and commonly used in electronics manufacture, as vehicles for pesticides, and in building materials. DDE is one of the major degradation products of DDT, a broad-spectrum insecticide widely used in agriculture and residential settings and for mosquito control in malaria-endemic regions.