摘要
二噁英作为一类持久性有机污染物,因其具有强毒性和生物累积性而被广泛关注,为减少二噁英对生态环境造成的影响,研究环境中二噁英的来源及生成机理尤为重要.固体废物焚烧是二噁英在环境中的主要来源之一.本文综述了固体废物焚烧过程中产生二噁英的浓度水平,着重分析了不同因素对二噁英生成情况的影响,同时结合近年来量子化学在研究燃烧过程中二噁英生成机理方面的应用,系统阐述了典型二噁英前驱物燃烧生成二噁英的反应路径,并对深入研究固体废物焚烧中产生的二噁英对周边环境的危害提出了建议.
As a group of persistent organic pollutants,dioxins have drawn much attention because of their hightoxicity and bioaccumulation potency.In order to reduce the adverse effect of dioxins on the ecological environment,it is important to investigate the sources and formation mechanisms of dioxins in the environment.The incineration of solid waste is one of the main sources of dioxins.In this paper the concentration of dioxins formed during the solid waste incineration process was reviewed,and the influencing parameters on dioxin formation was analyzed.The reaction pathways of dioxin formation from the combustion of typical dioxin precursors were also systemically elaborated,based on the application of quantum chemistry on the dioxin formation mechanisms studies in recent years.Further study on the effect of dioxins produced by solid waste incineration to the surrounding environment was proposed as well.
作者
李雁
郭昌胜
侯嵩
高建峰
徐建
LI Yan;GUO Changsheng;HOU Song;GAO Jianfeng;XU Jian(Department of Chemistry,College of Science,North University of China,Taiyuan,030051,China;State Key Laboratory of Environmental Criteria and Risk Assessment,Chinese Research Academy of Environmental Sciences,Beijing,100012,China)
出处
《环境化学》
CAS
CSCD
北大核心
2019年第4期746-759,共14页
Environmental Chemistry
基金
国家自然科学基金(41703122)资助~~
关键词
固体废物
二噁英
焚烧
生成机理
量子化学
solid waste
dioxins
incineration
formation mechanisms
quantum chemistry
