沈阳市可吸入尘(IP)与其它因素的相关分析

为了探讨北方城市ＩＰ（可吸入尘）和ＴＳＰ（总悬浮颗粒）之间的关系，在沈阳市内３个能代表不同大气污染水平的地区，定点同时连续测定ＴＳＰ、ＩＰ和ＳＯ２共９０天。分别在春秋两季。同时收集当天气象资料（气温、气湿、风速、风向）。相关、回归和主因素分析结果表明，ＩＰ与ＴＳＰ虽呈非常显著相关，但其比例受季节、风速的影响很大。春天季风使ＴＳＰ中含扬尘比例很大，ＩＰ显示为一个更稳定的指标。ＳＯ２与气温呈非常显著负相关，说明它是煤烟污染的主要代表。主因素分析显示沈阳大气污染有３个主要来源。首位是煤烟。分析得出ＩＰ与ＴＳＰ关系的２个回归方程，分别代表春秋两季

Correlation Between Respirable Particulate(IP)and Other Factors in Ambient Air of Shenyang

In order to get relationship between TSP and IP,We set three sampling sites representing three levels of ambient air pollution in Shenyang,monitoring for TSP,IPand SO 2 continuously for 90 days during Spring (April and May) and Autumn(September to November)in 1996.Meteorological data were concurrently colected.Correlation,regression,and master factors analyses showed that TSP and IP have highly significant relationship,their ratio were changed greatly based on wind speed in different seasons.Large seasonal wind in Spring blew up much more natural dust (with large diameter)in TSP so that proportion of IP/TSP was smaller.IP is a more stable and better index for particles then TSP does.SO 2 was highly significantly correlated coal burning for heating.Principal component analysis showed that there were three main sources of air pollution in Shenyang,and the domestic coal burning for heating was the first principal evil.We got two regression models for estimating IP from TSP in different seasons.