中文摘要：

近几年来,我国工业发展水平不断提高,但全国各地雾霾频发,严重影响着群众正常的生产生活秩序,并对百姓的健康状况带来威胁。为此,文章研究南京市2015年7月份PM2.5浓度的时空分布特征,进行源解析和对策研究;同时,根据特征污染物铅呼吸暴露途径的健康风险评价,分析其对人体健康状况的影响。

英文摘要：

In recent years, as our national industrial development level kept improving, haze occurs frequently nationwide, resulting in a severe influence on people＇s regular life and production order and threatens their health.This article studies temporal and spatial distribution characteristics of PM2.5 concentration of July 2015 in Nanjing,and conducts source analysis and countermeasure study. It also analyzes the health risk of lead exposure and the effect on the health status.