空气污染指数
kōngqì wūrǎn zhǐshù
根据空气质量标准和各种污染物对人体健康和生态环境的影响来确定的污染物浓度的值,是评估空气质量的一种依据。计算方法为:
- 将各种空气污染物的浓度分别除以国家标准,再乘以100,得到各种污染物指数,取其中最高的一项作为空气污染指数。我国目前计入空气污染指数的污染物项目有二氧化硫、一氧化碳、臭氧、二氧化氮、可吸入颗粒物等。 {air pollution index; extent of pollutant density determined on the basis of air-quality standards and the effects of various pollutants on human health and the ecological environment, the basis on which to appraise air quality. The air pollution index is computed by dividing the density of each air pollutant by the state standard and multiplying the quotient by 100, with the highest of the indices thus derived for all the pollutants serving as the air pollution index. In China, pollutants include sulphur dioxide, carbon monoxide, ozone, nitric dioxide, inhalable particulate matter, etc.}
空气污染指数
来自翻译宝典
