Fig. 2.
Dynamics of combustion-derived NCA in the indoor atmospheric environment during gas cooking. A) Relationship between the propane-gas-cooking-emitted NCA emission factor (ENCA) and coagulation scavenging parameters, the aerosol Fuchs surface area (AFuchs) and net coagulation sink (CoagSnkNet), during the gas-stove-combustion period. The color of the markers represents CoagSnkNet. B) Relationship between size-integrated (1.18–3 nm) propane-gas-cooking-emitted NCA number concentrations (NNCA) and conventional indoor air pollution markers, PM2.5 mass concentrations, and NO + NO2 mixing ratios, during the gas-stove-combustion period. The color of the markers represents the PM2.5 mass concentrations.