【摘要】 根据天津市秋季(2006年10月10日～20日)消光系数(bext)、PM2.5、SO2、NOX、NO2、O3质量浓度及相对湿度监测结果,利用灰色关联分析法分析大气消光系数同空气中的几种主要污染要素的相关性。结果表明,与消光系数有关的几种主要指标的灰关联度序为PM2.5>NOX>RH>NO2>O3,其中PM2.5与消光系数的灰关联系数达到0.905,远高于其他相关指标。同时对PM2.5和消光系数相关分析表明,监测期间天津市PM2.5质量消光系数为6.04m2/g。更多还原

【Abstract】 To know the relationship between the light extinction and air pollutants /RH.An online monitoring work including light extinction coefficient(bext),NOX,NO2,O3 and relative humidity was made in the autumn(from Oct 10th to 20th)of 2006.A grey relational analysis was applied and results showed that PM2.5 was correlative to the total light extinction coefficient with the highest relational grade(0.905)and the grey relational sequence was PM2.5 > NOx > RH > NO2 > O3.The relation of mass extinction coefficient,extinction coefficient and mass concentration was also analyzed.The result showed that mass extinction coefficient of PM2.5 in Tianjin is 6.04m2 /g.更多还原