摘要
利用重庆市17个大气自动站实时发布的数据,对PM_(2.5)与PM_(10)污染特征、变化规律与气象因子的相关性进行了分析。结果表明:2013年PM_(2.5)和PM_(10)的年均值分别为70,106μg/m3,均超过国家Ⅱ级标准。月均值、季均值变化明显,总体均呈两头高中间低的"U"型分布。2013年PM_(2.5)占PM_(10)的比例较大,均值为65.8%,PM_(2.5)和PM_(10)的Pearson相关系数为0.974,在0.01的置信水平上(双侧)显著相关。PM_(2.5)、PM_(10)的浓度与气温、大气压极显著相关;PM_(2.5)、PM_(10)的浓度与降雨量、日照时数(时)显著相关。
The paper analyzed pollution characteristics,variation trend and relativity of PM_（2.5）and PM_（10） from Chongqing seventeen national control sites according to real-time date obtained from January 2013 to December 2013. The result showed that the annual average PM_（2.5）and PM_（10） respectively reached 70 ug / m3 and 106 ug / m3 and failed to meet new Grade Ⅱnational air quality standards in 2013. The change of monthly mean values and season mean values was obviously,overall change trend showed a ＂U＂type distribution. The average ratio of PM_（2.5）to PM_（10） was 65. 8% in 2013. Pearson correlation coefficients of PM_（2.5）and PM_（10） was 0. 974,and which was significantly correlated on 0. 01 confidence level（ bilateral）. The average atmospheric pressure and average temperature is extremely significant correlation with the concentration of PM_（2.5）and PM_（10）,and the rainfall and sunshine hours（ time） is significantly correlated to the concentration of PM_（2.5）and PM_（10） in 2013.
出处
《环境工程》
CAS
CSCD
北大核心
2016年第3期97-101,共5页
Environmental Engineering
