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.