Sources and processes of organic aerosol in non-refractory PM1 and PM2.5 during foggy and haze episodes in an urban environment of the Yangtze River Delta, China

Shuaiyi Li, Cheng Chen, Guangli Yang, Jie Fang, Yele Sun, Lili Tang, Hongli Wang, Wentao Xiang, Hongliang Zhang, Philip Croteau, John T. Jayne, Hong Liao, Xinlei Ge, Olivier Favez, Yunjiang Zhang