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Aquatic Environmental Analytical Chemistry Lab
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A lab that uses trace elements and isotopes to read the past, present, and future of oceans and lakes.

AboutAbout the lab
Chemistry that reads the global environment, exploring the past and future of the hydrosphere.
The Aquatic Environmental Analytical Chemistry Lab studies trace elements and isotopes to clarify the present, past, and future of aquatic environments such as oceans and lakes.
The lab conducts interdisciplinary research spanning analytical chemistry, geochemistry, marine chemistry, oceanography, limnology, geology, and environmental science.
Key terms
- Trace element
- An element present in only very small amounts in seawater and other media
- Isotope
- Atoms of the same element that differ only in mass (the number of neutrons)
- Hydrothermal fluid
- High-temperature water heated underground that gushes out, for example on the seafloor
NewsLab news
Paper on Mo and W isotopes in Okinawa Trough hydrothermal fluids wins The Geochemical Journal Award of 2026
Paper on the acid leaching of metals from suspended particles in the Pacific Ocean published in Mar. Chem.
ResearchResearch themes
The lab conducts interdisciplinary research focusing on trace elements and isotopes to clarify the present, past, and future of the hydrosphere.
*Illustrative imageChemistry That Reads the Global Environment
Believing that advancing chemistry that reads the global environment is essential for a sustainable world, the lab conducts interdisciplinary research focusing on trace elements and isotopes to clarify the present, past, and future of the hydrosphere.
*Illustrative imageTrace Metals and Isotopes in the Ocean
The lab investigates how readily metals are leached by acid from suspended particles in the Pacific Ocean, east-west differences in nickel, copper, zinc, and cadmium in the subarctic Pacific, and the concentrations and isotope ratios of molybdenum and tungsten in hydrothermal fluids of the Okinawa Trough, among other topics.
MembersFaculty
- ProfessorYoshiki Sohrin
- Associate ProfessorShotaro Takano
- Assistant ProfessorLinjie Zheng
- Project Assistant ProfessorALAM Mahboob
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Sampling fluids from the Deep (OOI 45)” Ocean Observatories Initiative / Public domain (cropped)
- Chemistry That Reads the Global Environment: “Bloom in the Ross Sea -detail- ( )” NASA Goddard Space Flight Center from Greenbelt, MD, USA / Public domain (cropped)
- Trace Metals and Isotopes in the Ocean: “Researchers using Niskin bottle to collect water sample · DN-SD-01-00282” Steven Vanderwerff / Public domain (cropped)
- Related lab (Molecular Environment Analytical Chemistry Lab): “PTFE-3D-vdW” 作者不詳 / Public domain (cropped)
- Related lab (Molecular Microbial Science Lab): “Thermophilic bacteria” Amateria1121 / CC BY-SA 3.0 (cropped)
- Related lab (Atomic and Molecular Structure Lab): “XBio illustration – X-ray Crystallography” explorebiology / CC BY 4.0 (cropped)
- Related lab (Organoelement Chemistry Lab): “Pentacene molecule spacefill” Jynto (talk) / CC0 (cropped)
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