三台县城区大气环境质量分析与评价

Analyses and Assessment of the Air Quality in Santai County

根据2006～2007年三台县城区SO2、NO2、PM10浓度的监测数据，综合运用大气环境质量指数评价法和污染负荷分析法对三台县城区的大气质量进行分析与评价。结果表明：三台县城区主要大气污染物依次为PM10、SO2和NO2，污染程度相对较低，2007年较之2006年大气质量总体上有较大改善。SO2和PM10在2006～2007年间污染负荷均呈下降趋势，而NO2则呈现上升趋势，说明三台县城区大气污染正由煤烟型逐步向燃气型的趋势过渡。

The article analyzes and assesses the air quality of Santai county by using comprehensive air quality index and pollution load based on the data of SO2 , NO2 and PM10 monitored from 2006 to 2007. The results show that PM10 and SO2 are the dominant pollutants, and the pollution from NO2 is mild. In addition, the air quality in 2007 has a biggish improvement compared with that in 2006. The pollution load of 502 and PM10 shows a trend to decline from 2006 to 2007, while NO2 moves up, which indicates that air pollution in Santai county is in the course of transition from fuliginous model to gas -fired model. Some related countermeasures are pointed out at the end of the paper.