Search Results - "TAKAGAI, Yoshitaka"

Simple Radiometric Determination of Strontium-90 in Seawater Using Measurement of Yttrium-90 Decay Time Following Iron-Barium Co-precipitation by KONNO, Mitsuyuki, TAKAGAI, Yoshitaka

“…A radiometric quantitative methodology of 90Sr in seawater was developed using a measurement of the 90Y decay time following iron-barium co-precipitation. With…”
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Sequential Injection Analysis System Exploiting On-line Solid-phase Extraction for the Determination of Strontium and Nickel by Microwave Plasma Atomic Emission Spectrometry by AYALA, Alejandro, TAKAGAI, Yoshitaka

“…A sequential flow-based analysis system with on-line solid-phase extraction (SPE) columns coupled to microwave plasma atomic emission spectrometry (MP-AES) was…”
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Preparation of Highly Concentrated Uniform-Sized Silver Nanoparticles via Use of Thermoresponsive Zwitterionic Surfactants by Takagai, Yoshitaka, Nagasaku, Miyu, Nakagawa, Taichi, Takase, Tsugiko, Hinze, Willie L.

“…Despite the popular use of citrate for the reduction of silver ions, this process suffers from slow crystal growth and broad size distribution. The rapid and…”
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Online solid-phase extraction−inductively coupled plasma–quadrupole mass spectrometric quantification of 90Sr using 88Sr/86Sr isotope dilution method by Yanagisawa, Kayo, Odashima, Mizuki, Matsueda, Makoto, Furukawa, Makoto, Takagai, Yoshitaka

“…Due to the lack of a correlation with the natural Strontium (Sr) isotopes, it is difficult to apply the isotope dilution (ID) method to an artificial…”
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Isotope Dilution–Total Evaporation–Thermal Ionization Mass Spectrometric Direct Determination of Radioactive Strontium-90 in Microdrop Samples by Ito, Chihiro, Shimode, Ryoya, Miyazaki, Takashi, Wakaki, Shigeyuki, Suzuki, Katsuhiko, Takagai, Yoshitaka

“…Thermal ionization mass spectrometry (TIMS) was used to directly quantify an ultratrace of radioactive 90Sr in microliter droplet samples. No chemical…”
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Adsorption Behavior of Pu(IV), Am(III), Cm(III), and U(VI) on Desferrioxamine B-immobilized Micropolymer and Its Applications in the Separation of Pu(IV) by AOKI, Jo, OONUMA, Chisa, SUDOWE, Ralf, TAKAGAI, Yoshitaka

“…The adsorption properties of Pu(IV), Am(III), Cm(III), and U(VI) on desferrioxamine B-immobilized micropolymeric resin (DMPs) and adsorbed species were…”
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Synthesis and evaluation of different thio-modified cellulose resins for the removal of mercury (II) ion from highly acidic aqueous solutions by Takagai, Yoshitaka, Shibata, Atsushi, Kiyokawa, Shigemi, Takase, Tsugiko

“…The present resins o-benzenedithiol- and o-aminothiophenol-modified cellulosic resins were found to be very effective in removing mercury (II) ion from…”
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Development of Online Dilution System for Quantification of 90Sr Using Automatic Solid-phase Extraction Inductively Coupled Plasma Mass Spectrometry by YANAGISAWA, Kayo, MATSUEDA, Makoto, FURUKAWA, Makoto, TAKAGAI, Yoshitaka

“…In this paper, we propose an online dilution system for the rapid quantification of radioactive strontium-90 (90Sr) with inductively coupled plasma mass…”
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Synthesis and Evaluation of Reusable Desferrioxamine B Immobilized on Polymeric Spherical Microparticles for Uranium Recovery by Takagai, Yoshitaka, Abe, Miki, Oonuma, Chisa, Butsugan, Michio, Kerlin, William, Czerwinski, Ken, Sudowe, Ralf

“…Development of techniques for the separation and removal of uranium from wastewater and other sources is an active area of research because of the increasing…”
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Determination and Comparison of the Strontium-90 Concentrations in Topsoil of Fukushima Prefecture before and after the Fukushima Daiichi Nuclear Accident by Konno, Mitsuyuki, Takagai, Yoshitaka

“…To precisely understand the status of scattered strontium-90 (90Sr) after the 2011 accident at the Fukushima Daiichi Nuclear Power Plant (F1-NPP) of Tokyo…”
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Author Correction: A part per trillion isotope ratio analysis of 90Sr/88Sr using energy-filtered thermal ionization mass spectrometry by Wakaki, Shigeyuki, Aoki, Jo, Shimode, Ryoya, Suzuki, Katsuhiko, Miyazaki, Takashi, Roberts, Jenny, Vollstaedt, Hauke, Sasaki, Satoshi, Takagai, Yoshitaka

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Nanoparticle induced formation of self-assembled zwitterionic surfactant microdomains which mimic microemulsions for the in situ fabrication and dispersion of silver nanoparticles by Nakagawa, Taichi, Hibara, Akihide, Hinze, Willie L, Takagai, Yoshitaka

“…The effective synthesis of highly concentrated and stable spherical silver nanoparticles (Ag-NPs) enclosed within microdomains formed by the Ag-NP induced…”
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A part per trillion isotope ratio analysis of 90Sr/88Sr using energy-filtered thermal ionization mass spectrometry by Wakaki, Shigeyuki, Aoki, Jo, Shimode, Ryoya, Suzuki, Katsuhiko, Miyazaki, Takashi, Roberts, Jenny, Vollstaedt, Hauke, Sasaki, Satoshi, Takagai, Yoshitaka

“…Strontium-90 is a major radioactive nuclide released by nuclear accidents and discharge waste. Input of such radioactive nuclide into earth surface environment…”
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Determination of Characteristic vs Anomalous 135Cs/137Cs Isotopic Ratios in Radioactively Contaminated Environmental Samples by Zok, Dorian, Blenke, Tobias, Reinhard, Sandra, Sprott, Sascha, Kegler, Felix, Syrbe, Luisa, Querfeld, Rebecca, Takagai, Yoshitaka, Drozdov, Vladyslav, Chyzhevskyi, Ihor, Kirieiev, Serhii, Schmidt, Brigitte, Adlassnig, Wolfram, Wallner, Gabriele, Dubchak, Sergiy, Steinhauser, Georg

“…A contamination with the ubiquitous radioactive fission product 137Cs cannot be assigned per se to its source. We used environmental samples with varying…”
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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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Rapid Quantification of Radioactive Strontium-90 in Fresh Foods via Online Solid-Phase Extraction–Inductively Coupled Plasma–Dynamic Reaction Cell-Mass Spectrometry and Its Comparative Evaluation with Conventional Radiometry by Furukawa, Makoto, Takagi, Kyoko, Matsunami, Hisaya, Komatsuzaki, Yuko, Kawakami, Tomohiko, Shinano, Takuro, Takagai, Yoshitaka

“…This paper describes a rapid quantification method for radioactive strontium (90Sr) in fresh foods (perishable foods) and has been comparatively evaluated with…”
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Online Solid-Phase Extraction–Inductively Coupled Plasma–Quadrupole Mass Spectrometry with Oxygen Dynamic Reaction for Quantification of Technetium-99 by Matsueda, Makoto, Yanagisawa, Kayo, Koarai, Kazuma, Terashima, Motoki, Fujiwara, Kenso, Abe, Hironobu, Kitamura, Akihiro, Takagai, Yoshitaka

“…Quantification of pg/L levels (i.e., 0.6 mBq/L) of radioactive technetium-99 (99Tc) was achieved within 15 min in the presence of isobaric and polyatomic…”
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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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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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