High-resolution sampling and analysis of air particulate matter in the Pear River Delta region of Southern China: source apportionment and health risk assessment

Shengzhen Zhou, School of Atmosphere Sciences, Sun Yat-sen University, School of Atmospheric Sciences, Guangzhou, China, Perry K. Day, Institute of Geological and Nuclear Sciences, Lower Hutt, New Zealand and Xuemei Wang, Jinan University, School of Atmospheric Sciences, Guangzhou, China