二恶英的毒性及环境来源

介绍了二恶英的结构、理化性质、毒性和环境来源.二恶英是由2个或1个氧原子联接2个被氯取代的苯环组成的三环芳香族亲脂性固体有机化合物,非常稳定,难以自然降解,是目前发现的无意识合成的副产品中毒性最强的化合物,已经成为当今环境界和国际媒体关注的热点.其来源可分为工业来源和非工业来源,工业来源包括有机氯化学品的生产与纸浆氯气漂白过程、固体废物焚烧、热电以及金属生产等,非工业来源包括汽油,家庭固体燃料(木材和煤)以及木制品和家庭废物等的不完全燃烧、光化学反应和生化反应等.

The Toxicity of Dioxin and the Source in Environment

In this paper the structure,physical performance,toxicity and source of dioxin are introduced.Dioxin is one kind of solid organic compounds with strong toxicity,very stable and hard to be degraded naturally,and it has attracted attention in the present environmental world and international media.Its sources include two kinds,industrial and non-industrial,industrial sources include products from the production of organic chlorine,pulp chlorine bleaching process,incineration of solid wastes,thermoelectricity,metal production,and so on;non-industrial sources come from partial combusted,optically chemical reaction,and biochemical reaction products of gas,solid family fu-els(wood and coal),woods,family wastes,and so on.