On 29 November 2012: Two colleagues from HKUST visited our lab. (Hong Kong University of Science and Technology) 香港科技大学 Dr. Chak K. Chan, Head and Professor, Division of Environment, http://www.envr.ust.hk Department of Chemical and Biomolecular Engineering, http://www.cbme.ust.hk Director, Institute for the Environment, ienv.ust.hk Hong Kong University of Science and Technology and Dr. N. T. Lau…