“十一五”期间安庆市环境空气质量状况分析

摘要

Based on the monitoring data,the ambient air quality status of Anqing City during the＂ 11th 5-year plan＂ period was analyzed,and being compared with that during the ＂10th 5-year plan ＂ period.The results indicated that the proportion of excellent and good degree of ambient air quality showed downward trend.Primarily,pollutant mostly was PM10.The pollution in its old urban district was more serious than in its development zone.The concentration of SO2 and PM10 in heating season was higher than other seasons.The monitoring data of NO2 didn＇t present obvious seasonal change.Since 2009,the concentration of three pollutants has decreased.Being Compared with that in the ＂10th 5-year plan ＂period,the concentration of PM10 dropped significantly,the concentrations of SO2 and NO2 increased in different extent,the proportion of excellent and good degree of ambient air quality also decreased slightly.%根据安庆市环境空气质量监测数据,对＂十一五＂期间安庆市环境空气质量状况进行了分析,并与＂十五＂期间进行了比较。结果表明,＂十一五＂期间安庆市环境空气质量优良率总体呈下降态势,首要污染物主要为PM10,老城区的污染重于开发区。采暖期SO2及PM10的质量浓度高于其它月份,NO2测值随季节变化不明显,2009年起各种污染物浓度有所下降。与＂十五＂比较,＂十一五＂期间PM10的质量浓度大幅下降,SO2及NO2均有不同幅度的上升,环境空气质量优良率比＂十五＂略有下降。