Environmental and health risks of VOCs in the longest inner–city tunnel in Xi’an, Northwest China: Implication of impact from new energy vehicles

Hongmei Xu, Rong Feng, Zexuan Wang, Ningning Zhang, Renjian Zhang, Kailai He, Qiyuan Wang, Qian Zhang, Jian Sun, Bin Zhang, Zhenxing Shen, Steven Sai Hang Ho, Junji Cao