Polychlorinated dibenzofurans

（重定向自PCDF）

Structures of the ten 2,3,7,8-substituted PCDF congeners that are toxicologically of most relevance

Polychlorinated dibenzofurans (PCDFs) are a family of organic compounds with one or several of the hydrogens in the dibenzofuran structure replaced by chlorines. For example, 2,3,7,8-tetrachlorodibenzofuran (TCDF) has chlorine atoms substituted for each of the hydrogens on the number 2, 3, 7, and 8 carbons (see structure in the upper left corner of the second image). Polychlorinated dibenzofurans are much more toxic than the parent compounds, with properties and chemical structures similar to polychlorinated dibenzodioxins. These groups together are often inaccurately called dioxins. They are known teratogens, mutagens, and suspected human carcinogens. PCDFs tend to co-occur with polychlorinated dibenzodioxins (PCDDs). PCDFs can be formed by pyrolysis or incineration at temperatures below 1200 °C of chlorine containing products, such as PVC, PCBs, and other organochlorides, or of non-chlorine containing products in the presence of chlorine donors. Dibenzofurans are known persistent organic pollutants (POP), classified among the dirty dozen in the Stockholm Convention on Persistent Organic Pollutants.

词汇	PCDF
分类	英语词汇英语翻译词典
释义	PCDF 英语百科 Polychlorinated dibenzofurans （重定向自PCDF） Polychlorinated dibenzofurans (PCDFs) are a family of organic compounds with one or several of the hydrogens in the dibenzofuran structure replaced by chlorines. For example, 2,3,7,8-tetrachlorodibenzofuran (TCDF) has chlorine atoms substituted for each of the hydrogens on the number 2, 3, 7, and 8 carbons (see structure in the upper left corner of the second image). Polychlorinated dibenzofurans are much more toxic than the parent compounds, with properties and chemical structures similar to polychlorinated dibenzodioxins. These groups together are often inaccurately called dioxins. They are known teratogens, mutagens, and suspected human carcinogens. PCDFs tend to co-occur with polychlorinated dibenzodioxins (PCDDs). PCDFs can be formed by pyrolysis or incineration at temperatures below 1200 °C of chlorine containing products, such as PVC, PCBs, and other organochlorides, or of non-chlorine containing products in the presence of chlorine donors. Dibenzofurans are known persistent organic pollutants (POP), classified among the dirty dozen in the Stockholm Convention on Persistent Organic Pollutants.
随便看	mechanical dust extractor mechanical dusting mechanical dust removal mechanical dust separator mechanical dynamics mechanicaldynamometer mechanical dynamometer mechanical dysfunction of prosthetic valve mechanical dyskinesia of gall bladder neck mechanical dysmenorrhea mechanical earth work mechanical ectropion mechanical effect mechanical effect of ultrasound Mechanical efficiency mechanical efficiency of pump mechanical efficiency of storage pump mechanical efficiency of turbine mechanical efficiency test mechanical egg gatherer mechanical egg washer mechanical ejector mechanical elbow mechanical electrical analog mechanical electrical analogue 友情感言文案英文句子短句是什么意思哥哥姐姐的家庭情感文案是什么意思感悟心碎情感的句子图片是什么意思亲人团圆的心情感言句子是什么意思情感伤感长篇散文是什么意思用月亮告白情书是什么意思聚焦情感散文教学内容是什么意思清明表达了作者怎么的情感是什么意思情感文案可配音文案的软件是什么意思爱的很寂寞情感语录是什么意思杯杯酒中情感语录是什么意思情书日语版简介是什么意思表达难过的情感是什么意思情感语录那么累是什么意思短小情感书单文案怎么写是什么意思时舟不确定的婚礼相亲成功的约会技巧和方法情话专辑100句上海婚礼四大金刚聊天搭讪必回婆媳关系这个话题怎么样情感挽回是不是骗老公出轨的怎么挽回怎么跟女生聊天找词语搭讪女生在学校聊天怎么搭讪怎么样搭讪篮球哥哥聊天出轨女需要挽回吗上门挽回女友和父母相亲小视频的简单介绍挽回女友技巧哪家好思考疗法思能窒欲思虑思近虑远怡悦畅怀疗法急性型营业行为急性应激反应急性心因性反应急性拘禁反应性性一元论性三品人五类性三品论性习心理思想性习论梦见小刀、水果刀梦见人造钻石梦见小钳子梦见牛肚梦见墙纸梦见捡垃圾梦见妻子或情人的画梦见调料盒梦见拐杖梦见油漆梦见炉灶梦见绞刑架梦见戴手表梦见纽扣、扣子梦见粽子