【摘要】 采用污染损害指数法研究了苏州市空气质量变化特征,分析了苏州市2014年的环境空气质量。结果表明:苏州市综合污染损害指数值为11.725,达到环境空气质量二级标准范围,属于轻污染。在四种评价因子中,PM10的污染损害指数最大,达到7.969,其次是NO₂为6.135,CO和SO₂的污染损害指数相对较小,分别为4.124和3.385。相关性研究显示PM2.5和PM10与AQI相关性显著,相关性达到0.98和0.80,其次是CO,相关性为0.54,因此,PM10和PM2.5是苏州市环境空气的首要污染物。更多还原

【Abstract】 We investigated the annual variation law of air quality in Suzhou with the pollution damage index method and analyzed the relevance between PM10,PM2.5,SO₂,NO₂,CO and air quality in 2014. The results showed that the pollution damage index was 11.725,which means the air quality was within the second class and lightly-polluted. The pollution damage index of PM10,the first pollutant was 7.969;that of Nitrogen dioxide,the second, was 6.135. Those of CO and SO₂ were relatively low,4.124 and 3.385 respectively. PM2.5 and PM10 were significantly correlated with AQI;the correlation reached 0.98 and 0.80;the next was CO,with the correlation 0.54. Thus,PM10 and PM2.5 were the first air pollutants in Suzhou.更多还原