CUHK Ecotoxicology and Biogeochemistry Laboratory
CUHK Ecotoxicology and Biogeochemistry Laboratory
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The overall goal of our laboratory is to provide a better understanding of the complex environmental mercury (Hg) and other metallic element cycling in the environment. Our laboratory is equipped with the state-of-the-art instrument and facilities to conduct ultra-low level analyses of Hg in diverse environmental samples. We invite anyone who is interested in our research in Hong Kong to contact us, and collaborate with us or even join our team!
Group's news:
8 September 2025 Our Full-time Research Assistant and Part-time EES Ph.D. student, Matthew Cheng, will join the 15th China's Expedition to the Arctic for two weeks and he will conduct mercury research at Yellow River Station in Svalbard, a Norwegian archipelago in the Arctic Ocean.
22 May 2025 Reseach highlights on a WUN-supported project "Controls of Mercury Toxicity by Subtropical and Tropical Mangrove Ecosystems" were provided by Dr. Martin Tsui at the WUN Annual General Meeting 2025 in CUHK.
14 Mar 2025 An article is published by Croucher News - Biodiversity on "Mai Po mercury investigated" which highlights some of the ongoing work in this laboratory on mercury cycling in Mai Po Nature Reserve of Hong Kong.
Link: https://croucher.org.hk/en/news/mai-po-mercury-investigated
Secondary school students from a local school visiting our mercury lab!
Lab group gathering in December 2023, celebrating the end of the year!
Our group members attended and presented in a CUHK-organized conference "International Conference on Earth, Energy & Environmental Sciences for Carbon Neutrality (ICE3SCN)" in December 2023!
Presentations from our lab!
Prof. Sae Yun KWON from Pohang University of Science & Technology came to visit us in CUHK and gave a keynote speech on her work in the conference - Environmental intersection between net zero carbon and atmospheric mercury: Insights from mercury stable isotopes.
Our very first graduate - Shaoyi WANG, just obtained his Master of Philosophy Degree in Environmental Science (2023), congratulations! Title of his MPhil thesis is "Understanding Biogeochemical Factors Influencing Mercury Methylation in a Subtropical Mangrove Ecosystem".
Here is our Tekran 2600 automated total mercury analyzer.
Here is our Tekran 2700 methyl mercury analyzer.
Here is our new Nippon MA-3000 solid phase total mercury analyzer.
Here is a new Agilent ICP-MS 7900 in School of Life Sciences, we will use it mainly for lithium and selenium analyses.
Our group went to Sai Kung to do field sampling in coastal mangroves in July 2023.
Group members were working in one of the mangrove sites.
Our flow bench is air drying labwares in a nearly dust-free environments.
Undergraduate researchers are processing samples by acid digestion for total mercury analysis.
Undergraduate researchers are using a YSI probe to measure in-situ water quality parameters in a campus stream.
Matthew and Nikki are recording in-situ water quality at Kuk Po Stream.
Our lab presentation at Kuk Po Village.
Our new study site - rice paddy field at Yi O, Lantau Island.
Our freeze dryer is drying newly collected vegetation samples from Mai Po Nature Reserve.
Matthew set up a light trap for collecting forest invertebrates.
Litterfall trap collecting fresh litter with atmospherically deposited mercury in forest sites.
Shaoyi is collecting a sediment core in mangrove at Mai Po Nature Reserve.
Bonnie and Nikki are sampling in a marsh at Kuk Po Village.
TVB news filming in our lab !!!
TVB news story (in Cantonese) on local aluminum and metal pollution!
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