【作者单位】Laboratory of Applied Environmental Chemistry, University of Kuopio, Patteristonkatu 1, FIN-50100 Mikkeli, Finland；Department of Chemistry and Environmental Sciences, Tibet University, No.36 Jiangsu Lu, Lhasa, T.A.R.850000, PR China；Laboratory of Applied Environmental Chemistry, University of Kuopio, Patteristonkatu 1, FIN-50100 Mikkeli, Finland；Department of Chemistry, University of Oslo, P.O.Box 1033, Oslo 0315, Norway
