我国各地区环境介质中二噁英含量的对比分析

Comparative analysis of dioxins content in environmental media in various regions of China

中文关键词:  大气  二噁英  环境

英文关键词:atmosphere  dioxin  environment

中文摘要:

      二噁英广泛存在于大气、土壤等环境介质中, 因其特殊的物理化学及生物特性会严重危害人体健康和生态环境。本文总结了我国各地区大气中二噁英的污染现状, 并对其进行对比分析, 结果发现我国大部分地区大气中二噁英的平均浓度水平相当, 几乎都低于日本环境大气的标准限; 不同功能区大气中二噁英浓度差异较大, 但各地区间不同功能区的二噁英浓度变化趋势一致, 浓度由高到低大致为工业区、居民区、商业区、背景区, 由此可为我国大气中二噁英的污染状况提供依据。

英文摘要:

      Dioxins are widespread in the atmosphere, soil and other environmental media. Because of their special physicochemical and biological properties, they can harm to human health and ecological environment seriously. This paper summarized the present situation of atmospheric pollution of dioxins in various areas in our country, and carried on the contrast analysis. The results showed that the average concentration of atmospheric levels of dioxin in most parts of China were almost unanimous but lower than atmospheric environmental standard limit of Japan. In different functional areas, the differences of dioxins concentration in the atmosphere were great, but the variation trends of dioxins concentration in different functional areas were consistent, and the concentration from high to low was in order of industrial district, residence area, comercial area and background area. This paper can provide the basis for understanding the pollution status of dioxins in the atmosphere of China.