Pollution Characteristics of Secondary Water-Soluble Inorganic Ions in PM2.5 and Their Gaseous Precursors in Xiangtan, China

Pollution Characteristics of Secondary Water-Soluble Inorganic Ions in PM2.5 and Their Gaseous Precursors in Xiangtan, China Journal of Atmospheric and Environmental Optics . 2020, (4): 296 -304 .