Air Pollutants' Character and the Relation Between Pollutants and Meteorological Factors in Wuhai,Inner Mongolia

With the data of air pollutants of SO2,NO2 and PM10 of Wuhai from 2006 to 2010 and routine meteorological data,the statistic analysis was taken in Wuhai's recent 5 years' air quality,also,by grey relational analysis method,the relation was set up between the air pollutants' concentration and the main Meteorological factors.The results were as following:(1)PM10 was the chief pollutant followed by SO2;(2)from 2006 to 2010,there was little change in NO2 while SO2 decreased dramatically with PM10's dropping tendency;(3)in a year,SO2 changed dramatically with the maximum in Dec.and the minimum in July and August.Meanwhile,the minimum of PM10 was in summer while the maximum of PM10 was in Dec.and in the spring with dust;(4)with 0.05 correlation coefficient reliability test,it was found that SO2,NO2,and PM10 had some relations with average wind speed,average temperature,horizontal visibility,relative humidity,sunshine hours and average cloudiness;(5)by Gray Relational Analysis,it was also found that the average wind speed was key factor,sunshine hours and average cloudiness were also closely related with air pollutants.