* Corresponding authors

^a College of Environmental Science and Engineering, North China Electric Power University, Beijing, P. R. China
E-mail: xkwang@ncepu.edu.cn
Fax: +86-10-61772890
Tel: +86-10-61772890

^b School of Resources and Environment, Anhui Agricultural University, Hefei, P. R. China

^c Laboratory of Nuclear Energy Chemistry, Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, P. R. China
E-mail: shiwq@ihep.ac.cn

^d Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education Institutions, School for Radiological and Interdisciplinary Sciences, Soochow University, Suzhou, P. R. China

^e NAAM Research Group, Faculty of Science, King Abdulaziz University, Jeddah, Saudi Arabia