呼和浩特市空气颗粒物影响因素研究

摘要

选择呼和浩特市城东腾飞路中段为研究地，在内蒙古环境监测中心站实验大楼楼顶设置空气质量自动监测点，于2009年11月至2012年12月连续3年对该区域空气质量进行研究性监测。采用数理统计方法，对实测数据进行分析和研究，利用AQI评价的结果显示，颗粒物已经成为影响当地空气质量的主要污染物；PM2.5/PM10年平均值为0.47，随季节变化明显，春夏季比值偏小(春季为0.361，夏季为0.398)，秋冬季比值偏大(秋季为0.499，冬季为0.635)；受风速和湿度影响明显，比值与风速在0.01水平上呈现显著负相关，与湿度呈现显著正相关；利用3年污染物数据建立回归方程，经检验所建立的方程有效，说明其他污染物对PM2.5浓度变化有较显著影响。%Selecting the middle of tengfei road which in the east of the Huhhot, for the study site, automatic air quality monitoring set in the roof of the Inner Mongolia Environmental Monitoring Centre laboratory was built. The research of Regional Air quality monitoring has been carried on three years from November 2009 to December 2012. Using the method of mathematical statistics, the analysis result of the measured data and research shows that:The result evaluated by AQI shows that the particulate matter is the major pollutants that affect the local air quality;The annual average of PM2. 5/PM10 in Hohhot is 0. 47, the ratio changes with the seasons obviously, the general rule is that the ratio is smaller in the spring and summer(Spring:0. 361, Summer:0. 398), larger in autumn and winter(Autumn:0. 499, Winter:0. 635);PM2.5/PM10 obviously influenced by wind speed and humidity, there is a significantly inversely related between the ratio and wind speed at the level of 0. 01, a significant positive correlation with humidity;Using pollution data for three years to establish a regression equation. After inspection, the equation shows that other air pollutants have a significant impact on concentration of the PM2. 5 .