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 · 270 citations

Natural Sciences, Chemistry, Marine Sciences +17

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

Natural Sciences, Chemistry, Analytical Chemistry +9

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

Natural Sciences, Chemistry, Analytical Chemistry +5

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

Natural Sciences, Earth Sciences, Geology +17

Room-temperature fluorescence, phosphorescence and crystal structures of 4-acyl pyrazolone lanthanide complexes: Ln(L)3·2H2O

Dejian Zhou, Qin Li, Chunhui Huang et al. · Polyhedron · 1997 · 64 citations

Natural Sciences, Chemistry, Materials Science +16