S. Umetani

发表

Multielemental determination of GEOTRACES key trace metals in seawater by ICPMS after preconcentration using an ethylenediaminetriacetic acid chelating resin.

T. Kono, S. Nakatsuka, K. Norisuye, 2008, Analytical chemistry.

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

O. Fujino, E. Ueno, S. Umetani, 2000 .

Specific cooperative effect of a macrocyclic receptor for metal ion transfer into an ionic liquid.

H. Naganawa, H. Imura, A. Ikeda-Ohno, 2012, Analytical chemistry.

Aggregation of Ions in Higher Permittivity Solvents

M. Hojo, T. Ueda, H. Hamada, 1999 .

Oxidation of ascorbate and ascorbic acid at the aqueous|organic solution interface

S. Kihara, Mitsuko Suzuki, M. Matsui, 1997 .

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. Firdaus, K. Norisuye, Y. Nakagawa, 2007, Analytica chimica acta.

Ion-size recognition of Group 13 metals (Al3+, In3+) with modified β-diketones

M. Matsui, Quyen T. H. Le, S. Umetani, 1997 .

Acylpyrazolone derivatives of high selectivity for lanthanide metal ions: effect of the distance between the two donating oxygens

Yusuke Kawase, M. Matsui, Quyen T. H. Le, 2000 .

A SIMPLE SYNTHESIS OF NOVEL EXTRACTION REAGENTS. 4-ACYL-5-PYRAZOLONE-SUBSTITUTED CROWN ETHERS

Takashi Saeki, S. Yamazaki, K. Ogura, 1999 .

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

H. Freiser, S. Umetani, 1987 .

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

Chunhui Huang, Dejian Zhou, L. Ying, 1997 .

Highly Acidic Extractant, 4-Benzoyl-3-phenyl-5-isoxazolone: The Synergistic Extraction of Alkaline Earth and Alkali Metals Combined with Trioctylphosphine Oxide or Bis(diphenylphosphinyl)methane

Takayuki Sasaki, T. Tomita, M. Matsui, 1995 .

Role of the intramolecular hydrogen bond and ligand rigidity in the complexation of trifluoroacetylcycloalkanones with lanthanides: novel strategy for the design of organic ligands of high selectivity

Yusuke Kawase, M. Matsui, Quyen T. H. Le, 1998 .

α-Substituted β-diketones: effect of the α substituent on the complexation and selectivity for lanthanides

Mitsuko Suzuki, M. Matsui, Quyen T. H. Le, 1997 .

Complex Formation of Lanthanide Ions with Sulfonated Crown Ethers in Aqueous Solution

Z. Yoshida, Takayuki Sasaki, M. Matsui, 1998 .

Solvent extraction of alkaline earths and lanthanides using crown ethers as ion size selective masking reagents: A macrocycle application

Tadashi Yamamoto, Takayuki Sasaki, M. Mizutani, 1995 .

Solvent extraction of alkaline-earth metals with 4-acyl-5-pyrazolones and polydentate phosphine oxides

M. Matsui, S. Umetani, 1992 .

Cooperative intramolecular interaction of diazacrown ether bearing beta-diketone fragments on an ionic liquid extraction system.

H. Naganawa, H. Imura, N. Hirayama, 2009, Dalton transactions.

Comparison of Four Bidentate Phosphoric and Diamide Compounds for the Extractability of Actinides

Y. Sasaki, S. Umetani, 2006 .

Quantitative Extraction-Separation of Calcium and Strontium Using Cryptand [2.2.2] as a Masking Reagent

Takayuki Sasaki, M. Matsui, S. Umetani, 1994 .

Voltammetric study on the transfer of alkali and alkaline earth metal ions at the aqueous/organic interface facilitated by phosphine oxides

S. Kihara, K. Ogura, M. Matsui, 1993 .

Adduct formation properties of mono- and bidentate phosphine oxide compounds in the liquid—liquid extraction of some divalent metals with 1-phenyl-3-methyl-4-benzoyl-5-pyrazolone

S. Kihara, M. Matsui, S. Umetani, 1990 .

Synergic liquid/liquid extraction of lithium and sodium with 4-acyl-5-pyrazolones with bulky substituents and tri-n-octylphosphine oxide

H. Mukai, S. Kihara, M. Matsui, 1989 .

The synergistic extraction of alkaline earth metals with 4-benzoyl-3-methyl-1-phenyl-5-pyrazolone and bis(diphenylphosphinyl)methane.

S. Kihara, M. Matsui, S. Umetani, 1986 .

Liquid-Liquid Distribution of 4-Acyl-3-methyl-1-phenyl-5-pyrazolones and Their Zinc Complexes

M. Matsui, S. Umetani, 1983 .

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

Z. Yoshida, K. Maeda, S. Kihara, 1986 .

Molecular design of organic ligands highly selective for lanthanide metal ions

S. Umetani, 2006 .

Liquid-liquid extraction of lanthanides with a highly acidic extractant, 3-phenyl-4-benzoyl-5-isoxazolone, in the presence and absence of tri-n-octylphosphine oxide

M. Matsui, Quyen T. H. Le, S. Umetani, 1993 .

Steric effects of polymethylene chain length on the liquid-liquid extraction of Ni(II) and Zn(II) with bis(4-acylpyrazol-5-one) derivatives in the presence or absence of tri-n-octylphosphine oxide

H. Mukai, S. Kihara, M. Matsui, 1991 .

The Synergistic Extraction of Lanthanides with Trifluoroacetylcycloalkanones and Trioctylphosphine Oxide

Yusuke Kawase, M. Matsui, Quyen T. H. Le, 1997 .

Precipitation and extraction of some bivalent metal ions with bis(diphenylphosphinyl)methane and perchlorate.

M. Matsui, S. Kihara, S. Umetani, 1991, Talanta.

Solvent extraction of zinc with 1-(2′-chlorophenyl)-3-methyl-4-aroyl-5-pyrazolones

S. Kihara, M. Matsui, S. Miyazaki, 1989 .

Determination of uranium in apatite minerals by inductively coupled plasma atomic emission spectrometry after solvent extraction and separation with 3-phenyl-4-benzoyl-5-isoxazolone into diisobutyl ketone

O. Fujino, M. Matsui, S. Umetani, 1994 .

Solvent extraction of alkaline earth metals, and lithium with 1-phenyl-3-methyl-4-acylpyrazol-5-ones and trioctylphosphine oxide

M. Matsui, S. Umetani, K. Sasayama, 1982 .

Design of Highly Selective Solvent Extraction System of Metal Ions Utilizing Macrocyclic Ligand as Ion-size Selective Masking Reagent

S. Umetani, 2004 .

Quantitative extraction separation systems of alkali and alkaline earth metal ions using cryptands as ion-size selective masking reagents

Y. Komatsu, S. Umetani, S. Tsurubou, 1999 .

Improved extraction–separation of alkaline earths and lanthanides with the aid of an ion size-selective masking reagent

Takayuki Sasaki, M. Matsui, Quyen T. H. Le, 1996 .

Determination of Lanthanoids in Hard Tissues of Shellfish by ICP-MS with Solvent Extraction

O. Fujino, S. Umetani, Masahiro Kitatuji, 2007 .

Application of solvent extraction method to the determination of magnesium in hard tissues of shellfish by ICP-AES

Hiroaki Fukui, O. Fujino, S. Umetani, 2004 .

Steric Effect of Ortho Substituents of 1‐Phenyl‐3‐methyl‐4‐aroylpyrazol‐5‐ones on the Synergic Extraction of Scandium and Lanthanum with Tri‐n‐octylphosphine Oxide

H. Mukai, M. Matsui, S. Umetani, 2003 .

Improved separation in the solvent extraction of lanthanides by β-diketones through a controlled separation of the two donating oxygens

Yusuke Kawase, M. Matsui, Quyen T. H. Le, 1993 .

Steric effect of ortho-substituents of 1-phenyl-3-methyl-4-aroyl-5-pyrazolones on the synergic extraction of lutetium with trioctylphosphine oxide

H. Mukai, S. Kihara, M. Matsui, 1990 .

Solvent extraction of lithium and sodium with 4-benzoyl or 4-perfluoroacyl-5-pyrazolone and TOPO.

M. Matsui, S. Kihara, S. Umetani, 1987, Talanta.

The substitent effect on the synergic extraction of europium and scandium with 1-phenyl-3-methyl-4-acylpyrazol-5-one and tri and tri-n-octylphosphine oxide

M. Matsui, S. Umetani, K. Sasayama, 1983 .

The solvent extraction of europium and barium with 1-aryl-3-methyl-4-aroyl-5-pyrazolones

M. Matsui, S. Umetani, T. Shigematsu, 1980 .

Steric effects of polymethylene chain length on the liquid-liquid extraction of Be(II), Sc(III) and Y(III) with bis(4-acylpyrazol-5-one) derivatives

H. Mukai, S. Kihara, M. Matsui, 1992 .

Solvent extraction of divalent metal ions with azacrown ether substituted acylpyrazolones.

Kensuke Kurahashi, Y. Sohrin, S. Umetani, 2008, Analytical sciences : the international journal of the Japan Society for Analytical Chemistry.

Condutometric studies on higher ion-aggregation from lithium fluoroalkanoates in propylene carbonate and N,N-dimethylformamide

M. Hojo, Zhidong Chen, T. Ueda, 2009 .

Synthesis and characterization of tris(3-phenyl-4-benzoyl-5-isoxazolone) (1,10-phenanthroline)europium

Lianbin Xu, Chun-hui Huang, L. Gan, 1994 .

4-Acyl-5-Pyrazolones as an Analytical Reagent (II) : Applicability of Halogen Substituted 4-Acyl-5-Pyrazolones to the Solvent Extraction of Metals

M. Matsui, S. Umetani, J. Toei, 1980 .

Steric effects of polymethylene chain length on the liquid-liquid extraction of copper(II) with bis(4-acylpyrazol-5-one) derivatives

H. Mukai, S. Kihara, M. Matsui, 1989 .

Distribution of bioactive trace metals (Fe, Co, Ni, Cu, Zn and Cd) in the Sulu Sea and its adjacent seas

S. Nakatsuka, K. Norisuye, Y. Sohrin, 2007 .