Dataset of PM2.5 chemical components (ions, elements and carbon) in five guanzhong Cities from 2018 to 2019

Dataset of PM2.5 chemical components (ions, elements and carbon) in five guanzhong Cities from 2018 to 2019. In order to obtain the temporal and spatial distribution characteristics of the chemical components of particulate matter in Guanzhong region and analyze the pollution sources in Guanzhong region, sampling stations were set up in key observation sites including Xi 'an, Xianyang, Weinan, Baoji and Tongchuan and the background point Qinling Mountains. Filter samples were collected at five observation sites for one year. Using a 5L/min micro-flow sampler (MiniVol TAS), each 47mm diameter quartz filter film sample should be collected continuously for 24 hours from 10:00 to 10:00 the next day. The collected sample fliter were pre-treated by weighing, shearing and water dissolution, and further analyzed by DRI2001 carbon analyzer, MetrohM-940 ion chromatograph and energy dispersive X-ray fluorescence spectrometer to analysis the chemical composition data of the samples. Including OC, EC, NO3-, SO42-, NH4+, Mg, K, Ca, Mn and other 38 chemical analysis components.

2018—2019年关中五市PM2.5化学成分（离子、元素与碳）数据集。为揭示关中区域颗粒物化学成分的时空分布特征并解析该区域污染来源，研究团队在西安、咸阳、渭南、宝鸡、铜川等关键观测点位及秦岭背景点布设了采样站点。研究团队在5个观测点位开展了为期一年的滤膜样品采集工作：采用5L/min微流量采样器（MiniVol TAS），以直径47mm的石英滤膜进行采样，每日10:00至次日10:00连续采集24小时。采集得到的滤膜样品依次经过称重、剪切、水浸前处理，随后分别通过DRI2001碳分析仪、MetrohM-940离子色谱仪及能量色散X射线荧光光谱仪开展分析，以获取样品化学成分数据。涵盖有机碳（OC）、元素碳（EC）、硝酸根（NO3-）、硫酸根（SO42-）、铵根（NH4+）、镁（Mg）、钾（K）、钙（Ca）、锰（Mn）等38项化学成分指标。