Xiaofei Li, Ph.D is an Assistant Professor of Environmental Chemistry at Shaanxi University of Science and Technology, China. He has done research on organic matter, carbon and pollutants in air and snow/ice in China. He is a member of the Chinese Society of Cryosphere Science, the Geographical Society of China, and the Chinese Society of Particuology. He is a reviewer of Chemosphere, Science of The Total Environment, and Atmospheric Environment. So far, he has published over 70 papers in peer-reviewed academic journals.