Professor Tsui Tsz Ki, Martin


(Office): Rm 288, Science Centre South Block, CUHK
(Lab): Rm 376, 376A and 377, Science Centre South Block, CUHK

  People Martin Tsui


(Office): (852) 3943 6123
(Lab): (852) 3943 1307

Fax (852) 2603 7246
Email This email address is being protected from spambots. You need JavaScript enabled to view it.  



2010 Ph.D., University of Minnesota
2002 M.Phil., Chinese University of  Hong Kong
2000 B.Sc., Hong Kong University of Science and Technology


  • 2021/6-now    Associate Professor, Chinese University of Hong Kong
  • 2022/8-now    Joint appointment with Earth and Environmental Sciences programme, Chinese University of Hong Kong
  • 2022/8-now    Director of Environmental Science Programme, Chinese University of Hong Kong
  • 2023/1-now    Member, State Key Laboratory of Marine Pollution, City University of Hong Kong
  • 2022/1-12       Member, State Key Laboratory of Agrobiotechnology, Chinese University of Hong Kong
  • 2021/11-now   Fellow, Institute of Environment, Energy and Sustainability, Chinese University of Hong Kong
  • 2019-2021      Associate Professor, University of North Carolina at Greensboro
  • 2013-2019      Assistant Professor, University of North Carolina at Greensboro
  • 2011-2013      Turner Postdoctoral Fellow, University of Michigan

Research Interests

  • Environmental pollution
  • Ecosystem biogeochemistry
  • Stable isotope applications
  • Environmental molecular applications
  • Environmental human health

Representative Publications

  1. Tsui MTK, Kwon SY, Li M, Bishop K (2023) Revisiting the relationship between mercury emission and bioaccumulation. Eco-Environment & Health 2: 1-2.
  2. Lei P, Yu RQ, Kong Y, Bertilsson S, Tsui MTK, Jiang T, Zhao J, Liu YR, Joerg R, Zhong H (2023) Properly interpret metabolic inhibition results to identify primary mercury methylating microbes. Critical Reviews in Environmental Science and Technology
  3. Ullah R, Tsui MTK, Chow A, Chen H, Williams C, Ligaba-Osena A (2023) Micro(nano)plastic pollution in terrestrial ecosystem: Emphasis on impacts of polystyrene on soil biota, plants, animals, and humans. Environmental Monitoring and Assessment 195: 252.
  4. Ulus Y, Tsui MTK, Sakar A, Nyarko P, Aitmbarek NB, Ardón M, Chow AT (2022) Declines of methylmercury along a salinity gradient in a low-lying coastal wetland ecosystem at South Carolina, USA. Chemosphere 308: 136310.
  5. Li H, Tsui MTK, Ku P, Chen H, Yin Z, Dahlgren RA, Parikh SJ, Wei J, Hoang TC, Chow AT, Cheng Z, Zhu XM (2022) Impacts of forest fire ash on aquatic mercury cycling. Environmental Science & Technology 56: 11835-11844.
  6. Chen H, Wang, JJ, Ku P, Tsui MTK, Abney R, Berhe A, Zhang Q, Burton S, Wiley WR, Dahlgren RA, Chow AT (2022) Burn intensity drives the alteration of phenolic lignin to (poly) aromatic hydrocarbons as revealed by pyrolysis-gas chromatography-mass spectrometry (Py-GC/MS). Environmental Science & Technology 56, 12678-12687.
  7. Yang YH, Kwon SY, Tsui MTK, Motta LC, Washburn SJ, Park J, Kim M, Shing KH (2022) Ecological traits of fish for mercury biomonitoring: Insights from compound specific nitrogen and stable mercury isotopes. Environmental Science & Technology 56: 10808-10817.
  8. Waiker P, Ulus, Y, Tsui MTK, Rueppell O (2022) Mercury accumulation in honey bees trends upward with urbanization in the USA. Agricultural & Environmental Letters 7: e20083.
  9. Li M, Kwon SY, Poulin B, Tsui MTK, Motta L, Cho M (2022) Internal dynamics and metabolism of mercury in biota: A review of insights from mercury stable isotopes. Environmental Science & Technology 56: 9182-9195.
  10. Liu J, Li Y, Duan D, Peng G, Li P, Lei P, Zhong H, Tsui MTK, Pan K (2022) Effects and mechanisms of organic matter regulating the methylmercury dynamics in mangrove sediments. Journal of Hazardous Materials 432: 128690.

Research Grants

  • 2024-2027, Research Grants Council (RGC) Earmarked Grants, General Research Fund, Production of methylmercury and its linkage to biomagnification in food webs at a subtropical mangrove ecosystem, $877,079 (HKD)
  • 2023-2025, Environment and Conservation Fund, Environmental Research, Technology Demonstration and Conference Projects, Baseline characterization of mercury levels and its potential toxicity in shorebirds in Mai Po Nature Reserve and Deep Bay, $495,200 (HKD)
  • 2023-2025, State Key Laboratory of Marine Pollution, City University of Hong Kong, Examination of ecological, microbial, and geochemical factors in determining bioaccumulation of highly toxic methylmercury in natural mangrove ecosystems, $500,000 (HKD)
  • 2023-2024, Faculty of Science Direct Grant, CUHK, Biogeochemical factors driving mercury methylation in a subtropical mangrove ecosystem, $43,900 (HKD)
  • 2022-2024, State Key Laboratory of Agrobiotechnology, CUHK, Understanding mechanisms regulating toxic mercury exposure in agriculture and forest of Hong Kong, $514,032 (HKD)
  • 2022-2023, Countryside Conservation Funding Scheme HKEPD, From Valley to Plain: Conservation and Revitalisation from ‘Ng To’ to Kuk Po river and plain via multi-disciplinary, educational and action research, $3,000,000 (HKD) (Co-I)
  • 2020-2023, Department of Energy (USA) Biological and Environmental Research, Exploratory Proposal: How does mercury methylation respond to intensive forest management and the creation of anoxia in floodplain soils?, $132,285 (USD) (formerly as PI)
  • 2019-2024, National Science Foundation (USA) Division of Earth Sciences, Collaborative Proposal: Response of mercury cycling to disturbance and restoration of low-gradient forested watersheds, $164,740 (USD) (formerly as PI)


  • 2015, Candace Bernard & Robert Glickman Dean’s Professorship, University of North Carolina at Greensboro
  • 2011, Honorable Mention, Dissertation Award, Universities Council on Water Resources
  • 2010, Turner Postdoctoral Fellowship, University of Michigan
  • 2009, Doctoral Dissertation Fellowship, University of Minnesota
  • 2009, Doctoral Dissertation Improvement Grant, U.S. National Science Foundation
  • 2007, Chris Lee Award for Metals Research, Society Environmental Toxicology & Chemistry

Professional Activities

Editoral Services

  • Editorial Board member, Environmental Toxicology and Chemistry (2021-now)
  • Associate Editor, Journal of Environmental Quality (2017-now)

Research Proposal Review

  • National Science Foundation (USA)
  • Research Grant Council (Hong Kong)

Manuscript Review (selected journals)

  • PNAS, Nature Geoscience, Environmental Science & Technology, Science of the Total Environment, etc.