Search Results - "YUCHI, Akio"

Diverse Secondary Interactions between Ions Exchanged into the Resin Phase and Their Analytical Applications by YUCHI, Akio

“…The research activities by the author’s group to elucidate the chemical states of ions within the ion exchange resin phase are summarized. The resin with the…”
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Roles of Residual Silanol in Solid Phase Extraction of Copper to Octadecylsilyl Silica in the Presence of Acetylacetone by NASU, Shizuka, OHMURO, Satoshi, YASUI, Takashi, YUCHI, Akio

“…Batchwise studies have demonstrated that the retention of acetylacetone (Haa) from an aqueous phase in non-endcapped octadecylsilyl (ODS) silica with silanol…”
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Volume of Space within Cation-exchange Resins Determined by Penetration of Inorganic Salt Solutions by KAWAMURA, Riou, SATOU, Momoka, YONESAKA, Takuya, YUCHI, Akio

“…Penetration of salt solutions into cation exchange resins was used to measure the volume of a space within the resin phase (the inner space), which was usable…”
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Slow, Mid-saturated Exchanges by Large Anions on Resins due to Increase in Independency of Exchange Sites with Cross-Linking by YONESAKA, Takuya, YAGI, Souta, YASUI, Takashi, YUCHI, Akio

“…Ion exchanges by aromatic anions (AAs) of varying volumes on anion exchange resins of different cross linking (CL)-degrees were studied. The exchanges on the…”
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Effects of Residual Silanol on Solid Phase Extraction of Organic Compounds to Octadecylsilyl Silica by OHMURO, Satoshi, ISHIZAKI, Ryo, TSUKAMOTO, Masashi, NASU, Shizuka, YASUI, Takashi, TAKADA, Kazutake, YUCHI, Akio

“…Batchwise equilibrium study was carried out on the retention of nonpolar and polar organic compounds to octadecylsilyl (ODS) silicas of different properties at…”
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Triphosphate Ion-Selective Electrode Based on Zr-Porphyrin Complex by Yagi, Yuma, Masaki, Shuhei, Iwata, Tetsuki, Nakane, Daisuke, Yasui, Takashi, Yuchi, Akio

“…Ion-selective electrode using zirconium­(IV) complex with octaethylporphin (H2oep) as a carrier showed high selectivity to triphosphate (TP, H5tp) against…”
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Effects of Functional Group Density in Stylene-Divinylbenzene Copolymer Phase and of Supporting Electrolyte Concentration in Aqueous Phase on Performance of Iminodiacetate-type Chelating Resin in Terms of Contribution of Ion-Exchange Mechanism by IMAEDA, Hironori, YASUI, Takashi, TAKADA, Kazutake, YUCHI, Akio

“…The effects of the functional group density in the stylene-divinylbenzene copoymer phase and of the supporting electrolyte concentration in the aqueous phase…”
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pH-Independent Recognition of Polyhydroxy Compounds by Niobium(V) Porphyrin Complex with Unique Sugar Selectivity by DOI, Takuya, KACHIKAWA, Norihide, YASUI, Takashi, YUCHI, Akio

“…The niobium(V) complex with tetraphenylporphin having OH− as an auxilliay ligand exists as a dimeric complex, [Nb2(tpp)2O3] at a total concentration >10−4.5…”
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Effects of the Spaces Available for Cations in Strongly Acidic Cation-Exchange Resins on the Exchange Equilibria by Quaternary Ammonium Ions and on the Hydration States of Metal Ions by Watanabe, Yuuya, Ohnaka, Kenji, Fujita, Saki, Kishi, Midori, Yuchi, Akio

“…The spaces (voids) available for cations in the five exchange resins with varying exchange capacities and cross-linking degrees were estimated, on the basis of…”
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Perchlorate Selectivity of Anion Exchange Resins as Evaluated Using Ion-Selective Electrodes by YAMAMOTO, Kenji, MITSUDA, Shin’ya, OHTAKE, Naomi, MURASHIGE, Natsuki, OHMURO, Satoshi, YUCHI, Akio

“…The selectivity coefficients reported for perchlorate of the high selectivity on anion exchange resins (AXRs) have not been consistent with one another…”
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An electrochemical actuator based on reversible changes in volume of poly(acrylic acid) gel induced by quinone redox by Takada, Kazutake, Iida, Tomoya, Kawanishi, Yoshitomo, Yasui, Takashi, Yuchi, Akio

“…An actuator consisting of poly(acrylic acid) gel in contact with p-hydroquinone (QH 2)/ p-benzoquinone (BQ), which was immobilized on a Au-coated conductive…”
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Effects of the Exchange Capacity and Cross-Linking Degree on the Hydration States of Anions in Quantitative Loading onto Strongly Basic Anion-Exchange Resins by Yuchi, Akio, Kuroda, Shigeo, Takagi, Mayuu, Watanabe, Yuuya, Nakao, Satoshi

“…The water content was determined for five strongly basic anion-exchange resins (trimethyammonium type having different exchange capacities and cross-linking…”
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Enhanced Retention of Chelating Reagents in Octadecylsilyl Silica Phase by Interaction with Residual Silanol Groups in Solid Phase Extraction of Divalent Metal Ions by OHMURO, Satoshi, FUJII, Kan, YASUI, Takashi, TAKADA, Kazutake, YUCHI, Akio, KOKUSEN, Hisao

“…Solid-phase extraction (SPE) of divalent metal ions with a lipophilic and potentially divalent hexadentate chelating reagent (H2L), with which octadecylsilyl…”
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Potentiometry of effective concentration of polyacrylate as scale inhibitor by Yuchi, Akio, Gotoh, Yasumasa, Itoh, Shinsuke

“…The concentration of polyacrylate (PA) used as a scale inhibitor was potentiometrically determined with a solid state copper ion-selective electrode after…”
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Erratum: Enhanced Retention of Chelating Reagents in Octadecylsilyl Silica Phase by Interaction with Residual Silanol Groups in Solid Phase Extraction of Divalent Metal Ions by Ohmuro, Satoshi, Fujii, Kan, Yasui, Takashi, Takada, Kazutake, Yuchi, Akio, Kokusen, Hisao

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Potential changes during in situ formation of carriers for cationic surfactant ion-selective electrodes by conditioning by Faozia, Hanifa, Itadani, Naoko, Nomura, Miki, Suzuki, Kyouhei, Yasui, Takashi, Takada, Kazutake, Yuchi, Akio

“…•Complex potential changes during conditioning of cationic surfactant ISEs.•Mainly controlled by the ratio of counter cations in the membrane.•Partly…”
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Interactions of Anion-Exchange Resins with Polyacrylates in Atmosphere by TAUCHI, Hiroya, SAKAI, Yasumoto, OKAWA, Noriyuki, FAOZIA, Hanifa, MIZUGUCHI, Genki, YASUI, Takashi, TAKADA, Kazutake, YUCHI, Akio

“…The interactions of polyacrylates (PAs with mean molecular weight of 4.5, 25, and 250 kDa; Na+,pa−) with anion exchange resins in the Br− form (AXRs; -R+,Br−)…”
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Control of Ag+ Permeation by Na+ Concentration on the Basis of Volume Change in Poly(acrylic acid) Gel by Takada, Kazutake, Shibata, Atsushi, Yuchi, Akio

“…A molecular gate for Ag+ ion, consisting of poly(acrylic acid) (PAA) gel-coated Au mesh, was developed based on a volume change of the gel in response to the…”
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Two-phase reactions of tin(IV)–tetraphenylporphine complexes as carrier of anion selective electrodes by Kanegawa, Yoshio, Yuchi, Akio

“…Two-phase reactions of [Sn(OH) 2(tpp)] with lipophilic anions and inorganic acids were studied and compared with those of [Zr(OH) 2(tpp)] having the same…”
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Electrochemical Control of Threshold Value of Molecular Valve Consisting of Poly(acrylic acid) Gel by Takada, Kazutake, Ohara, Tetsuya, Takeue, Kouki, Ishikura, Natsumi, Kato, Chie, Yuchi, Akio

“…A molecular valve, consisting of a poly(acrylic acid) gel-coated Au mesh and a Au mesh working electrode, allowed electrochemically control of a concentration…”
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