细颗粒物(PM_(2.5))对农村环境空气质量评价的影响分析

Impact of fine particulate matter(PM_(2.5)) on the assessment of rural environment air quality

为了评估细颗粒物(PM2.5)监测对农村空气质量等级的影响,2014年在3个村庄监测了二氧化硫(SO2)、二氧化氮(NO2)、吸入性颗粒(PM10)和细颗粒物(PM2.5)等污染指标,使用环境空气质量标准(GB 3095-2012)和环境空气质量指数(AQI)法进行评价。结果显示:农村环境空气质量评价等级在细颗粒物(PM2.5)纳入评估后有所降低,等级为优的比例从29.7%下降到1.7%,等级为良的比例从70.3%提高到95.0%,同时轻微污染的比例从0提高到3.3%。环境空气质量指数(AQI)法对空气污染物有了更准确的评价,能评估未超标情况下空气污染物对空气质量的贡献程度。PM2.5与PM10有显著的正相关关系。

In order to evaluate the impact of fine particulate matter （PMz.5） monitoring on air quality level in rural areas, The sulfur dioxide （SO2）, nitrogen dioxide （NO2）, inhalation of particles （PMI0） and fine particulate matter （PM2.5） were monitored in three villages, 2014, and were then evaluated with the ambient air quality standard （GB 3095-2012） and environmental air quality index （AQI） method. The results showed that the rural environmental air quality evaluation grade decreased when fine particulate matter （PM2.s） was considered, the proportion of optimal grade droped from 29.7% to 1.7%, and the good grade, rised from 70.3% to 95.0%, while the slight polluted ratio increased from 0 to 3.3%. The air quality index （AQI） method can evaluate the air pollutant＇s contribution to air quality more correctly. There is significant positive correlation between PM2.5 and PM10.