[Concentration Characteristics and Source Analysis of PM2.5 During Wintertime in Zhengzhou-Xinxiang].

• DOI: 10.13227/j.hjkx.201806010
• Publication Date: 2019-05-08
• Authors: Guangxuan Yan; Pu-Zhen Zhang; Haiyan Huang; Ya Gao; Jingwen Zhang; Xin Song; Jia‐Yu Zhang; Huai-Gang Li; Zhiguo Cao; Jishao Jiang; Jing Fan; Yuesi Wang; Caixia Jin
• Keywords: Inorganic ions; Mass concentration (chemistry); Enrichment factor

To study the pollution characteristics, sources, and transportation process of PM2.5 its chemical compositions in Zhengzhou-Xinxiang region, samples were collected using a middle volume sampler, Zhengzhou Xinxiang urban areas for 30 consecutive days during winter 2016. The mass concentration was measured gravimetrically. 17 trace metals determined by inductively coupled plasma-mass spectrometry (ICP-MS), 7 water-soluble ions ion chromatography. enrichment factor (EF) method principal component analysis employed to determine source apportionment. results showed that daily mean sampling period 2016 223.87 μg·m-3 226.67 μg·m-3, respectively, which indicated levels relatively high both cities. three macro elements (Al, Ca, Fe) accounted 50% total metal cities, while heavy higher than Zhengzhou. EFs Cd, Ag, Pb far 1000, only Cd 1000 NO3-, SO42-, NH4+ main two They exceeded 94% existed forms (NH4)2SO4 NH4NO3. principle contributors mixture biomass combustion secondary aerosol Xinxiang, coal traffic emissions Zhengzhou, accounting 34.94% 33.99% emissions, respectively.