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Radiochemistry Lab
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A lab that makes full use of radioisotopes to explore chemistry related to nuclear energy and nuclear fusion.
AboutAbout the lab
A radiochemistry lab that makes full use of isotopes.
The Radiochemistry Lab works with radioisotopes (RI) and the materials they are made from to study chemistry related to nuclear energy and nuclear fusion.
The lab works on ozone chemistry, nuclide separation chemistry, and isotope separation chemistry, as well as interdisciplinary areas that combine them.
The lab is located in the Ito Campus laboratory of the Center for Integrated Isotope Safety Management, and it is a cooperating research group of the Department of Chemistry in the Faculty of Science.
According to the lab website, it accepts applications from prospective undergraduate, master's, and doctoral students at any time, and it also welcomes lab visits.
Key terms
- Isotope
- Atoms of the same element with different masses. They include radioactive isotopes, which emit radiation, and stable isotopes, which do not.
- Clay mineral
- A fine mineral with a layered structure, found in soil.
- Ion exchange chromatography
- A method of separating substances by passing a solution through a resin that holds ions, using differences in how easily each substance is retained.
NewsLab news
An undergraduate student won the Chemistry Letters Young Researcher Award 2025
The Radiochemistry Lab was launched
ResearchResearch themes
In collaboration with educational and research institutions in Japan and abroad, the lab makes full use of radioisotopes and the materials they are made from, aiming to contribute to chemistry related to nuclear energy and nuclear fusion that leads to the future. To this end, it develops theory and conducts applied technology research.
*Illustrative imageChemistry of ozone and radioactive materials
The lab systematically investigates how dissolved ozone reacts with organic and inorganic substances containing radioisotopes. It studies the reaction mechanisms between ozone and soil containing radioisotopes (humic substances and clay minerals) from the perspectives of kinetics and equilibrium, and it uses spectroscopy to study the interlayer structure of clay minerals containing dissolved ozone.
*Illustrative imageNuclide separation and adsorption onto soil
The lab systematically investigates the reactivity between metal ions (including radioisotopes) and soil (humic substances and clay minerals). It studies the mechanisms of adsorption and desorption between radioisotopes and soil from the perspectives of kinetics and equilibrium, and it uses spectroscopy to study the surfaces and interlayer structures of clay minerals containing radioisotopes.
*Illustrative imageIsotope separation and measurement
The lab systematically investigates isotope enrichment efficiency factors between metal ions and ion exchange resins. Its work also includes developing techniques for high-precision measurement of various isotopes with inductively coupled plasma mass spectrometry, and studying the enrichment behavior of lithium and molybdenum isotopes.
*Illustrative imageDeveloping technologies for decontamination, enrichment, and recovery
As basic and applied research that combines different fields, the lab is developing technology for the complete decontamination of soil contaminated with radioisotopes. It is also working on a system that uses ion exchange chromatography to enrich lithium and molybdenum isotopes at ultra-high speed, and on technology for the simultaneous recovery of lithium and uranium from seawater.
MembersFaculty
The members of the Radiochemistry Lab consist of faculty, collaborators, undergraduate students, and alumni.As of 2026
- Associate ProfessorYu Tachibana
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: “Ozone solution in CCl4” ChemicalForce / CC BY-SA 4.0 (cropped)
- Chemistry of ozone and radioactive materials: “Chemistry Laboratory ( )” U.S. Army RDECOM from Aberdeen Proving Ground, MD, USA / CC BY 2.0 (cropped)
- Nuclide separation and adsorption onto soil: “Chang'e-5 soil samples” Hui Ren / CC BY 4.0 (cropped)
- Isotope separation and measurement: “EA-IRMS, isotope ratio mass spectrometer with elemental analyzer for the determination of isotope ratios of stable isotopes in wines, spirits, honey and natural sweeteners, in CAFIA laboratory” Sarka Na kopci / CC BY-SA 4.0 (cropped)
- Developing technologies for decontamination, enrichment, and recovery: “Dekontaminering Sivilforsvaret” Bolstad75 / CC BY-SA 4.0 (cropped)
- Related lab (Structural Organic Chemistry Lab): “Supramolecular pyrene derivative nanorods laying on covalently bonded pyrene derivative aggregate” Bzitoo / CC BY-SA 4.0 (cropped)
- Related lab (Biocatalytic Chemistry Lab): “Plantes médicinales planche 1 - Medicinal plants, medical herbs, botanical illustrations, plate 1 - Public domain illustration from Larousse du XXème siècle 1932” EN NOIR & BLANC / CC0 (cropped)
- Related lab (Dynamic Life Chemistry Lab): “Fluorescence from Fluorescent Proteins” Erin Rod / CC BY-SA 4.0 (cropped)
- Related lab (Physical Chemistry of Dispersed Systems Lab): “Water beads (42106)” Rhododendrites / CC BY-SA 4.0 (cropped)
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