L Luo, X Bai, S Liu, B Wu, W Liu, Y Lv, Z Guo… - Journal of …, 2022 - Elsevier
… 3a and c we find a strong linear relationship of OC/EC in winter, demonstrating that they
could be co-emitted from exhausted of vehicles and coal combustion especially in PM 2.5 (R 2 = …