中文摘要：

针对南京市不同功能区的6个监测点,考察2014年9月至2015年1月期间细颗粒物PM_（2.5）和可吸入颗粒物PM_（10）浓度在线监测数据,分析南京市颗粒物质量浓度的时空变化特征及与气象因素的关系。结果表明：观测期间南京市PM_（2.5）和PM_（10）日均质量浓度分别为70、150μg/m~3,超标率分别为37.91%、30.72%;PM_（2.5）的质量浓度占PM_（10）质量浓度的分数达到63.6%,相关系数高达0.90;冬季颗粒物浓度大于秋季的,PM_（2.5）与PM_（10）的质量浓度日变化呈双峰型,峰值分别出现在10∶00与22∶00左右;气温对PM_（2.5）和PM_（10）的质量浓度均呈一定负相关性,对PM_（10）的影响更为显著（显著性检验水平p〈0.01）,与PM_（2.5）、PM_（10）的质量浓度比呈正相关性;降水能有效减小PM_（2.5）和PM_（10）的质量浓度,并且对粗粒子作用更明显;相对湿度与PM_（10）的质量浓度呈一定负相关性,而PM_（2.5）的质量浓度随着相对湿度的增大呈先增大后减小的变化趋势,在相对湿度为70%~80%时,PM_（2.5）的质量浓度最大;风力与PM_（2.5）、PM_（10）的质量浓度均呈负相关性,PM_（2.5）的质量浓度在风向为西北风、西北偏西风时较小。

英文摘要：

Online monitoring data of fine particulate matter PM_（2.5）and inhalable particulate matter PM_（10） were collected at six monitoring points in Nanjing from September 2014 to January 2015. The temporal and spatial distribution characteristics of atmospheric particulate matter and their relationship with meteorological factors were analyzed. The results show that the average daily mass concentrations of PM_（2.5）and PM_（10） are 70 and150 μg/m~3, and the excessive rates are 37.91% and 30.72%, respectively.The fraction of mass concentration of PM_（2.5）in mass concentration of PM_（10） reaches 63.6%, and the correlation coefficient is as great as 0.90. The mass concentrations of particulate matter are greater in winter than those in autumn. The mass concentrations daily change of PM_（2.5）and PM_（10） appears double peaks diagram, peaking at about 10：00 and 22：00. The temperature shows a negative correlation with mass concentrations of PM_（2.5）and PM_（10）,which is more significant on mass concentration of PM_（10）（significant test level p0.01）, but shows a positive correlation with mass concentration ratio of PM_（2.5）and PM_（10）. The precipitation can effectively reduce mass concentrations of PM_（2.5）and PM_（10）, and has an obvious effect on coarse form. The relative humidity shows a negative correlation with the mass concentration of PM_（10）. The mass concentration of PM_（2.5）increases first and then decreases with the increase of relative humidity, peaking when the relative humidity is between 70% and 80%. The wind force shows a significant negative correlation with mass concentrations of PM_（2.5）and PM_（10）.The mass concentration of PM_（2.5）is at a lower level in directions of northwest wind and west-northwest wind.