Communications Earth & Environment
Ratnayake, D. M., Tanaka, R., Nakamura, E. (2025). Biogeochemical impact of nickel and urea in the great oxidation event. Communications Earth & Environment, .
https://www.nature.com/articles/s43247-025-02576-8
International Symposium on Isotopomers (Poster)
R. Tanaka, C. Potiszil, D. M. Ratnayake, T. Ota, T. Kunihiro, C. Sakaguchi, K. Kobayashi, H. Kitagawa, M. Yamanaka, & E. Nakamura (2024).
http://www.geo.titech.ac.jp/ISI2024/abstract/P_52.pdf
The Astrophysical Journal
Ryoji Tanaka, Dilan M. Ratnayake, Tsutomu Ota, Noah Miklusicak, Tak Kunihiro, Christian Potiszil, Chie Sakaguchi, Katsura Kobayashi, Hiroshi Kitagawa, Masahiro Yamanaka (2024). Unraveling the Cr Isotopes of Ryugu: An Accurate Aqueous Alteration Age and the Least Thermally Processed Solar System Material. The Astrophysical Journal, .
DOI: https://iopscience.iop.org/article/10.3847/1538-4357/ad276a
Analytica Chimica Acta
Dilan M. Ratnayake, Ryoji Tanaka, Eizo Nakamura (2023). Determination of mass-dependent chromium isotopic compositions in geological samples by double spike-total evaporation-thermal ionization mass spectrometry (DS-TE-TIMS). Analytica Chimica Acta, .
https://www.sciencedirect.com/science/article/abs/pii/S0003267023009443?via%3Dihub
Goldschmidt Conference (Poster)
Dilan M. Ratnayake, Ryoji Tanaka, Eizo Nakamura (2023). Development of a sequential ion exchange chromatography method to separate geochemically important tracers for isotope measurements. Goldschmidt Conference (Poster), .
DOI: https://goldschmidtabstracts.info/abstracts/abstractView?doi=10.7185/gold2023.18756
Proceedings of the Japan Academy, Series B
Nakamura et al. (90 co-authors, 10th) (2022). On the origin and evolution of the asteroid Ryugu: A comprehensive geochemical perspective. Proceedings of the Japan Academy, Series B, .
https://www.jstage.jst.go.jp/article/pjab/98/6/98_PJA9806B-01/_article
Geologiska Föreningen Special publikation (Abstract)
Madeleine S. Bohlin, Christoffer Hemmingsson, Dilan Ratnayake, Ryoji Tanaka, Eizo Nakamura, Anna Neubeck (2022). Nickel isotope fractionation during iron oxide formation. Geologiska Föreningen Special publikation (Abstract), : 200-201.
Analytica Chimica Acta
Dilan M. Ratnayake, Ryoji Tanaka, Eizo Nakamura (2021). Novel nickel isolation procedure for a wide range of sample matrices without using dimethylglyoxime for isotope measurements using MC-ICP-MS. Analytica Chimica Acta, .
https://www.sciencedirect.com/science/article/abs/pii/S0003267021007601?via%3Dihub
Proceedings of the 34th Annual Sessions of the Geological Society of Sri Lanka (abstract)
Ratnayake R.M.D.M. and Perera L.R.K. (2018).
https://www.researchgate.net/publication/323393360_P-T-t_Evolution_of_Pelitic_an_Mafic_Rocks_Around_

Okayama University Science, Technology, and Innovation Creation Fellowship - 2023