济南市大气水平能见度与环境污染相关性分析

Correlation analysis between atmospheric visibility and pollutants in Jinan city

利用济南市2011年1月1日至12月31日大气水平能见度在线监测小时数据和对应细颗粒物(PM2.5)、PM2.5中碳组分(EC和OC)、挥发性有机物(VOC)及气象参数资料,分析污染物、气象参数等对能见度的影响。结果显示,相对湿度和PM2.5是影响能见度的主要因子,能见度与相对湿度及PM2.5浓度主要呈指对数关系。结合相对湿度条件对PM2.5浓度与能见度关系进行综合分析,得到相关经验模型公式,并利用2010年6月1日至11月30日的相应数据资料进行实例关系验证,结果表明,建立的经验模型公式有较好的实际应用价值。

The effects of fine particle(PM2. 5),organic carbon(OC),elemental(EC),volatile organic compound(VOC) concentrations and meteorological factors on visibility in Jinan were analyzed on the basis of monitoring results from January 1 to December 31,2011. The atmosphere relative humidity and PM2. 5concentration were found to be the main factors,which both exhibit exponential or logarithmic relationship with the visibility. The relation between PM2. 5concentration and visibility was then established by the relative empiric formulas, combined with different ranges of relative humidity. The validation of the formulas was conducted by using the data from June 1 to November 30 in 2010,and the results show that the empiric formulas have good practical value.