1. Department of Applied Chemistry, College of Chemistry and Chemical Engineering; Xi'an Shiyou University; Xi'an Second Dianzi Rd. No. 18 710065 China
2. Shaanxi Province Key Laboratory of Environmental Pollution Control and Reservoir Protection Technology of Oilfields; Xi'an Second Dianzi Rd. No. 18 710065 China
3. State Key Laboratory of Petroleum Pollution Control; CNPC Research Institute of Safety and Environmental Technology, Anning Zhuang Rd. No. 18; Beijing 102206