南京市空气中颗粒物PM10_PM2_5污染水平_黄鹂鸣.pdf

中国环境科学 2002,22(4)：334~337 China Environmental Science 南京市空气中颗粒物PM10 、PM2.5 污染水平 * 黄鹂鸣,王格慧,王 荟,高士祥,王连生 (南京大学环境学院,江苏 南京 210093) 摘要：为了初步调查南京市空气中颗粒物PM10、PM2.5 的污染水平,于2001 年冬、春、秋3 季在南京市的 5 个典型城市功能区,用大流 量采样器收集了50 个样品.结果表明,南京市PM10 、PM2.5 的污染很严重,超标率分别为72%和92%,最大超标倍数达到6.3 和9.0,而且对 人体健康危害更大的PM2.5 占PM10 的大部分,约为68%,应引起公众和相关职能部门的高度重视. 关键词：PM10 ；PM2.5 ；颗粒物；空气污染；南京 中图分类号：X703.5 文献标识码：A 文章编号：1000-6923(2002)04-0334-04 Pollution level of the airborne particulate matter (PM10, PM2.5) in Nanjing City. HUANG Li-ming, WANG Ge-hui, WANG Hui, GAO Shi-xiang, WANG Lian-sheng (School of Environment, Nanjing University, Nanjing 210093, China). China Environmental Science. 2002,22(4) ：334~337 Abstract：For preliminary investigation of pollution levels of airborne particulate matter in Nanjing City, fifty airborne particulate (PM10、PM2.5) samples were collected at five typical functional areas of Nanjing City during the winter, spring and autumn in the year 2001. The results indicate that the pollution by PM10 and PM2.5 is quite serious . The rates exceeding the standards are 72% and 92% for PM10 and PM2.5 respectively with the highest up to 6.3 and 9.0 times of the standards. The PM2.5 fraction, which is more harmful to human health, accounts approximately 68% of the PM10. It should bring to high attention of the public and the related functional sectors. Key words ：PM10 ；PM2.5；particulate matter ；air pollution；Nanjing city 近10 年来,美国、欧洲在流行病学领域的研 京市PM10、PM2.5 的污染状况进行了初步分析, [1] 究表明 ,城市空气可吸入性颗粒物PM10 及细颗 为以后的深入研究提供参考. 粒物 PM2.5( 即空气动力学等效直径≤10ìm 、 1 材料与方法 2.5ìm 的颗粒物)与医院就诊率、呼吸器官疾病 发病率乃至死亡率等诸多不利健康效应之间关 1.1 采样点 系密切;而且PM2.5 由于粒径更为微小,可在肺泡 在南京市选择了 5 个采样点,即苏源宾馆、 沉积,并进入血液循环,对人体健康的危害更大. 瑞金新村、夫子庙、扬子技校和中山陵,分别代 目前