Emission characteristic, spatial distribution, and health risk of polycyclic aromatic compounds (PAHs, NPAHs, and OPAHs) from light-duty gasoline and diesel vehicles based on on-road measurements

Jiaqi Fu, Tiange Fang, Yutong Gao, Ting Wang, Zhenyu Jia, Dongping Guo, Hongjun Mao