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.

单词	PCDF
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	crista sacralis articularis的意思 Crista sacralis intermedia的意思 Crista sacralis lateralis的意思 crista sacralis media的意思 Crista sacralis mediana的意思 crista sagittalis的意思 crista sellaris的意思 crista semilunaris的意思 Crista sphenoidalis的意思 crista sphenoidea的意思 crista sphenomaxillaris的意思 crista sphenooccipitalis的意思 crista spiralis的意思 crista spiralis cochleae的意思 crista stapedis的意思 crista statica的意思 crista suborbitalis的意思 crista superciliaris的意思 crista supinatoria的意思 Crista supracondylaris lateralis的意思 crista supracondylaris lateralis humeri的意思 Crista supracondylaris medialis的意思 crista supracondylaris medialis humeri的意思 crista supracondyloidea medialis的意思 Crista supramastoidea的意思