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Nakagawa, Yusuke and Shotaro, Katano and M. Lutfi , Firdaus and Kazuhiro , Norisuye and Takafumi , Hirata and Derek, Vance and Yoshiki , Sohrin (2012) The molybdenum isotopic composition of the modern ocean. Geochemical Journal, 46. pp. 131-141. ISSN 1880-5973
Firdaus, M. Lutfi and Kazuhiro , Norisuye and Yoshiki , Sohrin (2011) Marine Chemistry of Zirconium, Hafnium, Niobium and Tantalum. In: International Congress on Analytical Sciences, 22-26 May 2011, Kyoto Japan.
Firdaus, M. Lutfi and Tomoharu, Minami and Kazuhiro , Norisuye and Yoshiki , Sohrin (2011) Strong elemental fractionation of Zr–Hf and Nb–Ta across the Pacific Ocean. Nature Geoscience. pp. 1-4. ISSN 1752-0894
Firdaus, M. Lutfi and Yusuke , Nakagawa and Kazuhiro, Norisuye and Yoshiki , Sohrin (2009) Marine Geochemistry of Zr, Hf, Nb, Ta, Mo and W. Technical Report. Institute for Chemical Research Kyoto University, Japan, Kyoto Japan.
Nakatsuka, Seiji and Kei , Okamura and Shigenobu , Takeda and Jun , Nishioka and M. Lutfi , Firdaus and Kazuhiro , Norisuye and Yoshiki , Sohrin (2009) Behaviors of dissolved and particulate Co, Ni, Cu, Zn, Cd and Pb during a mesoscale Fe enrichment experiment (SEEDS II) in the western North Pacific. Deep-Sea Research II (56). pp. 2822-2838. ISSN 0967-0645
Nakagawa, Yusuke and M. Lutfi , Firdaus and Kazuhiro , Norisuye and Yoshiki , Sohrin and Keita , Irisawa and Takafumi , Hirata (2008) Precise Isotopic Analysis of Mo in Seawater Using Multiple Collector-Inductively Coupled Mass Spectrometry Coupled with a Chelating Resin Column Preconcentration Method. Analytical Chemistry,, 80 (23). pp. 9213-9219. ISSN 0003-2700
