Abstract:Aimed to understand the property of water-soluble fraction of PM2.5 in Taiyuan City, 56 PM2.5 samples were collected with high volume particulate sampler from December 2011 to January 2012 in Taiyuan city. The PM2.5 concentrations were determined gravimetrically and the water-soluble fraction of TOC and TN were measured using TOC/TN analyzer. The PM2.5 concentrations during heating period in Taiyuan were found higher than these in Beijing, Tianjin, Guangzhou, Nanjing and Xi¢an. The regression analysis showed that PM2.5 concentration was negatively correlated to wind speed (r=-0.4693, α=0.05), positively to humidity (r=0.4092, α=0.05), but without significant relationship to temperature. No prominent pattern was observed in day-night PM2.5 fluctuations during the sampling period. The hydrophilic fraction of TOC accounted for 13.2%~57.7% of total PM2.5, and had significant correlation to NO3- and SO42- ions.
贾小花, 解静芳, 马翔, 邸志东, 毋燕妮. 太原市冬季PM2.5水溶性组分污染特征分析[J]. 中国环境科学, 2013, 33(4): 599-604.
JIA Xiao-Hua, JIE Jing-Fang, MA Xiang, DI Zhi-Dong, WU Yan-Ni. Analysis of water-soluble constituents in winter of PM2.5 in Taiyuan City. CHINA ENVIRONMENTAL SCIENCECE, 2013, 33(4): 599-604.