Polychlorinated biphenyl - Wikipedia
网页Polychlorinated biphenyls (PCBs) are highly carcinogenic chemical compounds, formerly used in industrial and consumer products, whose production was banned in the United States by the Toxic Substances Control Act in 1976 and internationally by the Stockholm Convention on Persistent Organic Pollutants in 2001.
Learn about Polychlorinated Biphenyls | US EPA
网页2024年7月26日 · PCBs belong to a broad family of man-made organic chemicals known as chlorinated hydrocarbons. PCBs were domestically manufactured from 1929 until manufacturing was banned in 1979. They have a range of toxicity and vary in consistency from thin, light-colored liquids to yellow or black waxy solids.
多氯联苯 - 百度百科
网页氯化联苯（PCBs），是一类有机化合物，按氯原子数或氯的百分含量分别加以标号，我国习惯上按联苯上被氯取代的个数（不论其取代位置）将PCB分为三氯联苯（PCB3）、四氯联苯（PCB4）、五氯联苯（PCB5）、六氯联苯（PCB6）、七氯联苯（PCB7）、八氯联 …
多氯聯苯 - 维基百科，自由的百科全书
网页多氯聯苯 （英語： Polychlorinated biphenyl，簡稱： PCB， CAS號 1336-36-3 ），又稱 多氯聯二苯 或 二聯酚，是許多含氯數不同的 聯苯 含氯化合物的統稱 [1][2]。 在多氯聯苯中，部份 苯 環上的 氫 原子被 氯 原子置換，一般式為C 12 H (10-n) Cl n （1≦n≦10）。 依氯原子的個數及位置不同，多氯聯苯共有209種 異构体 存在， 與 1,4-戴奧辛 同屬 多鹵代化合物 [來源請求]，或稱 類戴奧辛物質。 特性. 多氯聯苯在 常溫 下是比 水 重的 液體，多氯聯苯耐 …
What Are Polychlorinated Biphenyls (PCBs)? - Agency for Toxic ...
网页What Are Polychlorinated Biphenyls (PCBs)? Where Are PCBs Found? What Are Routes of Exposure for PCBs? Who Is at Risk of Exposure to PCBs? Standards and Regulations; What Is the Biologic Fate of PCBs in Humans? What Are Adverse Health Effects of PCB Exposure? Clinical Assessment; Clinical Assessment – Laboratory Tests
Polychlorinated Biphenyls (PCBs) | Toxic Substances | Toxic …
网页Polychlorinated biphenyls are mixtures of up to 209 individual chlorinated compounds (known as congeners). There are no known natural sources of PCBs. PCBs are either oily liquids or solids that are colorless to light yellow. Some PCBs can exist as a vapor in air. PCBs have no known smell or taste.
Polychlorinated biphenyls: New evidence from the last decade
网页Polychlorinated biphenyls (PCBs) are a category of chemicals that were manufactured in the United States between about 1930 and 1977 (Hopf et al., 2009). Because of their general chemical inertness and heat stability, PCBs were predominantly used as coolants and lubricants in electrical equipment such as capacitors and transformers.
HEALTH EFFECTS - Toxicological Profile for Polychlorinated …
网页The primary purpose of this chapter is to provide public health officials, physicians, toxicologists, and other interested individuals and groups with an overall perspective on the toxicology and epidemiology of polychlorinated biphenyls (PCBs).
Polychlorinated Biphenyls (PCBs) in the Environment: …
网页2022年7月1日 · Polychlorinated biphenyls are persistent organic pollutants that have a negative impact on the ecosystem and all living beings and continue to represent a serious risk to human health [9]. Large-scale production of PCBs started in 1945.
Polychlorinated biphenyl (PCB) | Britannica
网页2024年8月29日 · Polychlorinated biphenyl (PCB), any of a class of organohalogen compounds prepared by the reaction of chlorine with biphenyl. A typical mixture of PCBs may contain over 100 compounds and is a colourless, viscous liquid. The mixture is relatively insoluble in water, is stable at high temperatures,
跳至内容