平顶山市大气PM10、PM2.5 污染调查

于2003年12月-2004年11月对平顶山市城区大气PM10、PM2.5污染进行了调查.结果表明,2004年大气PM10、PM2.5质量浓度分别为0.031 mg/m3～0.862 mg/m3、0.019 mg/m3～0.438 mg/m3;年均值分别为0.174 mg/m3、0.114 mg/m3,超标0.74倍、6.60倍.PM10、PM2.5污染的季节变化趋势是以冬季、春季高,秋季次之,夏季最低,细颗粒(PM2.5)约占PM10 65%;As、Pb、Cd、S、Zn、Cu、Mn、Ca等元素是颗粒物中主要污染元素,易在PM2.5中富集.平顶山市大气颗粒物污染的主要来源有煤炭燃烧、汽车尾气、城市基础建设和有色金属冶炼行业.

PollutantsInvestigation ofPM 10 and PM 2 . 5 in Pingdingshan AmbientAir

Investigation of pollution levels of airborne PM10 and PM2.5 in Pingdingshan City were carried out from December 2003 to November 2004. The result indicated that the range of PM10 concentration are from 0. 031 mg/m^3 to 0. 862 mg/m^3 and PM2.5 from 0. 019 mg/m^3 to 0. 438 mg/m^3 during 2004, the annual average PM10 concentration 0. 174 mg/m^3 and PM2.5 0. 114 mg/m^3. The concentration of PM10 was over the Chinese air quality standard 0.74 times and The one of PM2.5 over the American air quality standard 6.60 times. The PM10 and PM2.5 pollution levels changed with seasons, which the concentrations of them in the winter and spring were high, the autumn next, the summer lowest. The PM25 accounted approximately 65% in the PM10. The main trace elements in the particles were As, Pb, Cd, S, Zn, Cu,Mn,Ca, and the elements easily concentrated in PM2.5. The main pollution sources of the particles come from burning coal, automobile exhaust, the city infrastructure construction and nonferrous metals smelting.