TY - CHAP M1 - Book, Section TI - Polychlorinated Biphenyls A1 - Clapp, Richard W. A2 - Wallace, Robert B. PY - 2017 T2 - Maxcy-Rosenau-Last Public Health and Preventive Medicine, 15e AB - The group of chemicals termed polychlorinated biphenyls is part of the larger class of chlorinated organic hydrocarbon chemicals. There are 209 individual compounds (congeners) with varying numbers and locations of chlorine on the two phenyl rings, with varying degrees of toxicity and adverse human and ecological effects.1 Some of the PCBs are structurally similar to dioxins and furans and these congeners may cause similar health effects.2 The higher chlorinated PCBs are particularly persistent in the environment,3 although not all potential congeners were manufactured and there was a shift toward lower-chlorinated PCB mixtures in later years. In 1976, the U.S. Congress passed the Toxic Substances Control Act which led to the ban of production of PCBs in the United States. SN - PB - McGraw-Hill Medical CY - New York, NY Y2 - 2024/04/20 UR - accessbiomedicalscience.mhmedical.com/content.aspx?aid=1141969871 ER -