夏季南昌市大气颗粒物PM_(10)·PM_(2.5)污染水平研究

Pollution Levels of Airborne Particulate Matter PM10 and PM2.5 in Summer in Nanchang City

为了调查夏季南昌市大气颗粒物PM、PM2.5的污染水平，在2007年7-8月在南昌市5个典型城市功能区采集了80个样品。结果表明，南昌市PM和PM2.5污染很严重，超标率分别达55%和60%，而且对人体健康危害更大的PM2.所占比例较大，约为65%；在空间分布上，夏季5个采样点的污染情况基本为交通干线〉工业区〉商业混合区〉居住区〉远郊区，南昌市大气颗粒物中PM、PM2.5的回归方程为PM2.5=0.545 9PM10，相关系数为0.998 3。

In order to invesfigate pollution levels of airborne particulate matter PM10 and PM2.5 at the summer in Nanehang City, eighty airborne particulate samples were collected at five typical function areas of Nanehang City from July to August in 2007. The results indicated that the pollution by PM10 and PM2.5 was quite serious . The rates exceeding the standard were 55% and 60% respectively. PM2.5 fraction, which was more harmful to human health, accounted approximately 65%. The pollution of five sampling site was traffic route 〉 industrial zone 〉 business mixing zone 〉 residential area 〉 outer zone. The regression equation of PM10 and PM2.5 particulate matter in Nanchang was PM2.5 = 0.545 9PM10, and correlation coefficient was 0.998 3.