Key Laboratory of Geographic Information Science(Ministry of Education);
School of Geographic Sciences;
East China Normal University;
Shanghai 200241;
China;
Institute of Eco-Chongming;
20 Cuiniao Rd.;
Chongming;
Shanghai 202162;
China;
State Key Laboratory of Loess and Quaternary Geology;
Institute of Earth Environment;
Chinese Academy of Sciences;
Xi’an 710079;
China;
State Key Laboratory of Severe Weather;
Chinese Academy of Meteorological Sciences;
Beijing 100081;
China;
PM_(1)pollution; chemical speciation; secondary aerosol; field campaign;