SCNU Environmental Research Institute Guangdong Provincial Key Laboratory of Chemical Pollution and Environmental Safety & MOE Key Laboratory of Theoretical Chemistry of Environment South China Normal University Guangzhou 510006 China;
School of Environment South China Normal University University Town Guangzhou 510006 China;
Department of Geosciences University of Wisconsin-Milwaukee Milwaukee WI 53211 USA;
Department of Engineering Dordt University Sioux Center IA 51250 USA;
Department of Civil and Environmental Engineering University of Wisconsin Milwaukee Milwaukee WI 53211 USA;