After my retirement from the Associate Deanship and Professorship at the City University of Hong Kong, I moved from Hong Kong to the United Kingdom. I have been an Adjunct Professor of the Department of Chemistry, City University of Hong Kong from 2022 to 2024.

I have been the Associate Dean (Education) of the College of Science, and Professor of the Department of Chemistry, at the City University of Hong Kong (Hong Kong SAR) before my retirement in December 2021. I received my PhD from the University of Hong Kong in 1990 and did my postdoctoral research with Nobel laureate (the late) Sir Geoffrey Wilkinson at the Johnson Matthey Laboratory of Imperial College London, UK. Before joining the City University of Hong Kong in 1994, I have worked as a forensic scientist in the Government Laboratory of Hong Kong and as a water scientist in the Environmental Protection Department of Hong Kong. As a Professor in Chemistry, I taught undergraduate and postgraduate courses on Analytical Chemistry, Environmental Chemistry and Forensic Science. As an Associate Dean of the College of Science, I looked after matters related to undergraduate education in my college. These include: conducting regular performance reviews on existing Bachelor of Science degree programmes, developing and validating new programmes, liaising with student bodies, organizing student academic activities, conducting public engagements on STEM education, and promoting undergraduate programmes to local and overseas high schools. My research interest lies in the development of molecular, nano- and micro-scale materials for biomedical and environmental/food safety applications.

I have worked as a water scientist at the Environmental protection Department of Hong Kong from 1992 to 1994. My duties included: development and supervision of project compliance water quality monitoring programmes, management of the water quality monitoring vessel of the department, supervision of technical staff on routine coastal water quality monitoring, conduction of the routine coastal water quality monitoring programme on Hong Kong waters, and preparation and publication of annual coastal water quality monitoring reports.

I have worked in the Forensic Science Division of the Government Laboratory of Hong Kong as a forensic scientist specializing in dangerous drugs (opiates) analysis from 1990 to 1991. My division was the sole provider of forensic science services to all the government departments of Hong Kong. My job duties included: crime scene investigation at illegal manufacturing facilities (street laboratories) of dangerous drugs, forensic analysis of dangerous drugs, provision of expert opinions at courts on dangerous drug-related cases.