Shigeo Umetani

Multielemental Determination of GEOTRACES Key Trace Metals in Seawater by ICPMS after Preconcentration Using an Ethylenediaminetriacetic Acid Chelating Resin

Yoshiki Sohrin, Shouhei Urushihara, Seiji Nakatsuka et al. · Analytical Chemistry · 2008 · 265 citations

Engineering, Marine Chemistry, Environmental Chemistry +16

Mixed-ligand chelate extraction of lanthanides with 1-phenyl-3-methyl-4-(trifluoroacetyl)-5-pyrazolone and some phosphine oxide compounds

Shigeo Umetani, Henry Freiser · Inorganic Chemistry · 1987 · 89 citations

Solvent Extraction, Engineering, Altmetric Attention Score +18

Fundamental factors in the polarographic measurement of ion transfer at the aqueous/organic solution interface

Sorin Kihara, Mitsuko Suzuki, Kohji Maeda et al. · Analytical Chemistry · 1986 · 88 citations

Engineering, Measurement, Altmetric Attention Score +18

Determination of uranium and thorium in apatite minerals by inductively coupled plasma atomic emission spectrometry with solvent extraction separation into diisobutyl ketone

Osamu Fujino, Shigeo Umetani, Eiji Ueno et al. · Analytica Chimica Acta · 2000 · 74 citations

Environmental Chemistry, Chemical Engineering, Engineering +13

Preconcentration of Zr, Hf, Nb, Ta and W in seawater using solid-phase extraction on TSK-8-hydroxyquinoline resin and determination by inductively coupled plasma-mass spectrometry

M. Lutfi Firdaus, Kazuhiro Norisuye, Taishi Sato et al. · Analytica Chimica Acta · 2006 · 63 citations

Solvent Extraction, Chemical Engineering, Environmental Chemistry +15