Search Results - "IGARASHI, Shukuro"

Rapid Determination of Sub-ppm Heavy Metals in the Solution State via Portable X-ray Fluorescence Spectrometry Based on Homogeneous Liquid–Liquid Extraction in a Ternary Component System by KATO, Takeshi, NAGASHIMA, Yuki, MANAKA, Atsushi, NAKAMURA, Chihiro, OSHITE, Shigekatu, IGARASHI, Shukuro

“…The rapid determination of sub-ppm heavy metals in the solution state was examined via portable X-ray fluorescence spectrometry (XRF) based on homogeneous…”
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Separation and concentration of indium from a liquid crystal display via homogeneous liquid–liquid extraction by Kato, Takeshi, Igarashi, Shukuro, Ishiwatari, Yoshiyuki, Furukawa, Makoto, Yamaguchi, Hitoshi

“…Separation and concentration of indium from a liquid crystal display (LCD) was conducted using homogeneous liquid–liquid extraction (HoLLE) in order to…”
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Flow Injection Spectrophotometric Analysis of Human Salivary α-Amylase Activity Using an Enzyme Degradation of Starch–Iodine Complexes in Flow Channel and Its Application to Human Stress Testing by Ohtomo, Takao, Igarashi, Shukuro, Takagai, Yoshitaka

“…Flow injection spectrophotometric analysis (FIA) of human salivary α-amylase was developed using an enzyme degradation reaction of starch–iodine complexes. In…”
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Determination of Trace Amounts of Bismuth in Steel by ICP-MS Through a Cascade-preconcentration and Separation Method by Okano, Gen, Igarashi, Shukuro, Ohno, Osamu, Yamamoto, Yuhei, Saito, Shotaro, Oka, Yoshio

“…Determination of trace amounts (~0.05 μg) of bismuth in steel by inductively coupled plasma mass spectrometry (ICP-MS) has been carried out by a…”
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Flow Injection Spectrophotometric Analysis of Human Salivary [alpha]-Amylase Activity Using an Enzyme Degradation of Starch-Iodine Complexes in Flow Channel and Its Application to Human Stress Testing by Ohtomo, Takao, Igarashi, Shukuro, Takagai, Yoshitaka

“…Flow injection spectrophotometric analysis (FIA) of human salivary α-amylase was developed using an enzyme degradation reaction of starch-iodine complexes. In…”
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β-Cyclodextrin as a Metal-anionic Porphyrin Complexation Accelerator in Aqueous Media by OHTOMO, Takao, YOKOYAMA, Aya, KONNO, Mitsuyuki, OHNO, Osamu, IGARASHI, Shukuro, TAKAGAI, Yoshitaka

“…The rate of the complexation reaction between anionic porphyrins and 11 metal ions was found to be accelerated by the presence of β-cyclodextrin (β-CD) in…”
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Separation and Recycling for Rare Earth Elements by Homogeneous Liquid-Liquid Extraction (HoLLE) Using a pH-Responsive Fluorine-Based Surfactant by Saito, Shotaro, Ohno, Osamu, Igarashi, Shukuro, Kato, Takeshi, Yamaguchi, Hitoshi

“…A selective separation and recycling system for metal ions was developed by homogeneous liquid-liquid extraction (HoLLE) using a fluorosurfactant. Sixty-two…”
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HPLC-spectrophotometric detection of trace heavy metals via 'cascade' separation and concentration by Okano, Gen, Igarashi, Shukuro, Yamamoto, Yuhei, Saito, Shotaro, Takagai, Yoshitaka, Ohtomo, Takao, Kimura, Shigenobu, Ohno, Osamu, Oka, Yoshio

“…A cascade pre-concentration and separation system involving continuous solid-phase extraction and one-drop solvent concentration was developed to enable…”
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Catalytic activity of noble metal ions for the degradation of 5,10,15,20-tetrakis(4-sulfonatophenyl)porphine in the presence of oxidizing agent, and its application to the determination of ultra trace amounts of ruthenium by Kawamura, Kunio, Igarashi, Shukuro, Yotsuyanagi, Takao

“…Trace quantities of ruthenium(II) ion catalyze the oxidation of 5,10,15,20-tetrakis(4-sulfonatophenyl)porphine (TPPS) by potassium bromate. This reaction can…”
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Time measurement-visual analysis of l-cysteine using the autocatalytic sodium sulfite/hydrogen peroxide reaction system and its application to length detection–flow analysis by Kato, Jun, Chiba, Michihito, Igarashi, Shukuro

“…Trace amounts of l-cysteine can function as a trigger, i.e., reaction initiator, in the autocatalytic sodium sulfite/hydrogen peroxide reaction system. Rapidly…”
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Powerful preconcentration method for capillary electrophoresis and its application to analysis of ultratrace amounts of polycyclic aromatic hydrocarbons by Takagai, Yoshitaka, Akiyama, Ryoutaro, Igarashi, Shukuro

“…For environmental analyses, a high-performance and powerful preconcentration system exceeding 1 x 10(7)-fold was developed that was composed of a blue cotton…”
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Selective Visual Determination of Vanadium(V) Ion in Highly Acidic Solution Using Desferrioxamine B Immobilization Cellulose by Takagai, Yoshitaka, Yamaguchi, Hitoshi, Kubota, Toshio, Igarashi, Shukuro

“…The vanadium ion in a strong acidic aqueous solution was visually detected and determined without pretreatment. This is achieved by chemically immobilizing the…”
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Quenching-Chemiluminescence Determination of Trace Amounts of l-Tyrosine Contained in Dietary Supplement by Chemiluminescence Reaction of an Iron-Phthalocyanine Complex by Ohtomo, Takao, Igarashi, Shukuro, Takagai, Yoshitaka, Ohno, Osamu

“…The chemiluminescence (CL) signal immediately appeared when a hydrogen peroxide solution was injected into an iron-phthalocyanine tetrasulfonic acid (Fe-PTS)…”
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Characteristic Redox Potential-Time Curve in the Iron(II)/Nitric Acid Autocatalytic Reaction and Its Application to a Time Measurement-determination of Folic Acid by KATO, Jun, IGARASHI, Shukuro

“…A characteristic redox potential-time curve of the iron(II)/nitric acid autocatalytic reaction was applied to a time measurement-determination for sub-µM…”
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Flow Injection Spectrophotometric Analysis of Human Salivary α-Amylase Activity Using an Enzyme Degradation of Starch-Iodine Complexes in Flow Channel and Its Application to Human Stress Testing by Takao Ohtomoa, Shukuro Igarashib, Yoshitaka Takagaia

“…Flow injection spectrophotometric analysis (FIA) of human salivary α-amylase was developed using an enzyme degradation reaction of starch-iodine complexes. In…”
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Simultaneous Determination of Iron(II) and Iron(III) by Micellar Electrokinetic Chromatography Using an Off-line Selective Complexing Reaction by TAKAGAI, Yoshitaka, IGARASHI, Shukuro

“…A simultaneous determination with UV detection/capillary electrophoresis for Fe(II) and Fe(III) was achieved using a sulfonated bathophenantholine and…”
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UV-detection capillary electrophoresis for benzo[a]pyrene and pyrene following a two-step concentration system using homogeneous liquid-liquid extraction and a sweeping method by Takagai, Y, Igarashi, S

“…10(-9) mol l-1 levels of polycyclic aromatic hydrocarbons (PAHs) suspected for certain noxious materials can be determined and separated by UV-detection…”
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Determination of ppb Levels of Tryptophan Derivatives by Capillary Electrophoresis with Homogeneous Liquid–Liquid Extraction and Sweeping Method by Takagai, Yoshitaka, Igarashi, Shukuro

“…Tryptophan (Trp) derivatives were selectively separated from 24 kinds of amino acid mixture solutions. Capillary electrophoresis (CE) with UV detection using…”
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Homogeneous liquid-liquid extraction method for the selective spectrofluorimetric determination of trace amounts of tryptophan by Oshite, S, Furukawa, M, Igarashi, S

“…Twenty-one amino acids were derivatized with fluorescamine (FLA) under basic conditions (pH 9) and the extraction of the amino acid-FLA derivatives was…”
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Determination of Ultratrace Amounts of Ruthenium(III) by the Delayed Autocatalytic Reaction Using Citric Acid by KATO, Jun, OHNO, Osamu, IGARASHI, Shukuro

“…A method for determination of ultratrace amounts (ppq levels) of ruthenium(III) was developed using a copper(II)-phthalocyanine-3,4′,4″,4′′′-tetrasulfonic…”
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