集中供暖区大气PM2.5季节动态及其影响因素——以陕西省宝鸡市为例

目的 研究集中供暖区大气PM2.5的现状、动态及其主要影响因素.方法 2012年4月～2013年3月利用E-BAM粒子监测仪连续监测了宝鸡市建成区的大气PM2.5浓度,结合气象因子、燃煤锅炉烟尘排放量和工业生产总值等数据进行分析.结果 宝鸡市大气PM2.5在非供暖期（4月～10月）污染程度较轻,供暖期（11月～翌年3月）污染程度较重;燃煤锅炉烟尘对PM2.5的贡献率约为10.9％;PM2.5浓度与日均湿度正相关,与日均温度、日均大气压负相关.结论 集中供暖区供暖期（11月～翌年3月）是治理PM2.5污染问题的关键期.

Analysis of the seasonal dynamics and influence factors of PM2.5 in the traditional regions of centralized heat supply——taking Baoji City in Shaanxi Province as example

Objective--To monitor the present situation and seasonal dynamics of PM2.5 in the traditional regions of centralized heat supply and analyze the influential factors of PM2.5 Methods--The meteorological factors, gross industrial production, dust emission of coal-fired boilers were monitored with the instrument of E-BAM in the traditional regions of centralized heat supply in Baoji City, Shaanxi Province from April, 2012 to March, 2013. Results--PM2.5 of Baoji City was less polluted in the non-heating period （April to October）, and was serious polluted in the heating period （November to next March） ; the soot emission of coal-fired boilers contributed around 10.9 % to concentration of PM2.5. Concentration of PM2.5 is positively correlative with mean daily humidity and mean daily temperature, negatively with mean daily air pressure. Conclusion--Central heating zones in heating period （November--the following March） is critical to govern pollution problems of PM2.5.