Dr. Yinchang Feng is currently working as Professor at the College of Environmental Science and Engineering, Nankai University, China and Director of the State Environmental Protection Key Laboratory of Urban Particulate Air Pollution Prevention and the Member of Expert Team for State Clear Air Research Project. He received his PhD in Major Environmental Science from Nankai University. In past, he worked as Instructor at Chemistry College of Lanzhou University. He has published 15 articles in national and international journals.