Data for: Chemical characteristics and source apportionment of ambient PM1.0 and PM2.5 in a polluted city in North China Plain

The sampling campaign was performed at Hebei University of Engineering (36.57°N, 114.50°E) in Handan. This site, located on the southeast edge of the urban area and surrounded by school and residential areas, is approximately 300 m northern of South Ring Road and 400 m northeast of Handan Highway. There were several low-rise buildings around the sampling site, and no large point sources were found nearby. A lab-assembled sampler with four channels was placed on the roof of a four-story building on campus, approximately 12 m above the ground. From 6 to 31 December 2015, PM1.0 and PM2.5 were simultaneously collected on quartz (0.2 μm pore size) and Teflon filters with 47 mm diameters at an 8.35 L min-1 flow rate for each channel from 8:00 am to 7:30 am the next day. Before sampling, the quartz filters were heated at 450°C for 8 h to remove impurities. The quartz and Teflon filters were stored at -20°C after sampling. In total, 52 quartz-filter samples, 52 Teflon-filter samples and 4 blank samples (2 quartz filters and 2 Teflon filters) were collected during the sampling campaign. The blank samples were used to eliminate the effect of background values originating from the filters. The quartz filters were utilized for WSII, OC and EC analysis, and the Teflon filters were utilized for mass determination of particulate matter and trace elemental analysis.本采样工作于邯郸市河北工程大学（36.57°N，114.50°E）开展。该采样点位处于城区东南边缘，周边环绕学校与居住区，距南环路北侧约300米，距邯郸高速公路东北侧约400米。采样点周边分布有多栋低层建筑，未发现大型点污染源。一台实验室自制的四通道采样器被放置于校园内一栋四层建筑的屋顶，离地高度约12米。2015年12月6日至31日期间，每日8:00至次日7:30，以8.35 L·min⁻¹的流量，分别在孔径0.2 μm的石英滤膜与直径47 mm的特氟龙（Teflon）滤膜上同步采集PM1.0与PM2.5样品。采样前，石英滤膜需经450℃烘烤8小时以去除杂质。采样完成后，石英滤膜与特氟龙滤膜均保存于-20℃环境中。本次采样累计获取石英滤膜样品52份、特氟龙滤膜样品52份，以及空白样品4份（石英滤膜与特氟龙滤膜各2份）。空白样品用于扣除滤膜本身带来的本底值影响。其中，石英滤膜用于水溶性无机离子（Water-Soluble Inorganic Ions, WSII）、有机碳（Organic Carbon, OC）与元素碳（Elemental Carbon, EC）分析，特氟龙滤膜则用于颗粒物质量浓度测定与痕量元素分析。