School of Chemistry and Chemical Engineering, Southwest Petroleum University,Chengdu 610500, P. R. China;
Chongqing Key Laboratory of Exogenic Minerallization and Mine Environment, Chongqing Institute of Geology and Mineral Resources, Chongqing 400042, P. R. China;
Chongqing Research Center of State Key Laboratory of Coal Resources and Safe Mining,Chongqing 400042, P. R. China;
School of Chemistry and Chemical Engineering, Southwest Petroleum University,Chengdu 610500, P. R. China;
School of Chemistry and Chemical Engineering, Southwest Petroleum University,Chengdu 610500, P. R. China;
School of Chemistry and Chemical Engineering, Southwest Petroleum University,Chengdu 610500, P. R. China;