1. The Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters (Ministry of Education) School of Environment and Energy; South China University of Technology; Guangzhou 510006 P.R. China
2. Ministry Key Laboratory of Oil and Gas Fine Chemicals College of Chemistry and Chemical Engineer i ng; Xinjiang University; Urumqi 830046 P.R. China
3. Academy of Instrument Analysis; Xinjiang Uygur Autonomous Region; Urumqi 830011 P.R. China