Determination of lead in seawater by flow-injection on-line preconcentration-electrothermal atomic absorption spectrometry after coprecipitation with iron(III) hydroxideNAKAJIMA, Junichi; HIRANO, Yoshihiro; OGUMA, Koichi et al.Analytical sciences. 2003, Vol 19, Num 4, pp 585-588, issn 0910-6340, 4 p.Article

Sensitive determination of molybdenum in steel by flow injection-on-line ion-exchange preconcentration-ICP-atomic emission spectrometrySEKI, Tatsuya; OGUMA, Koichi; ISHIBASHI, Yoichi et al.Tetsu-to-hagané. 2003, Vol 89, Num 9, pp 939-942, issn 0021-1575, 4 p.Article

Simultaneous spectrophotometric determination of uranium and thorium by flow injection analysis using selective maskingHIRANO, Yoshihiro; OGAWA, Yuichi; OGUMA, Koichi et al.Analytical sciences. 2003, Vol 19, Num 2, pp 303-307, issn 0910-6340, 5 p.Article

On-line preconcentration and determination of traces of lead in river-water and seawater by flow injection-flame atomic absorption spectrometry and ICP-mass spectrometrySEKI, Tatsuya; HIRANO, Yoshihiro; OGUMA, Koichi et al.Analytical sciences. 2002, Vol 18, Num 3, pp 351-354, issn 0910-6340Article

Direct determination of vanadium in hair by graphite furnace atomic absorption spectrometry using air ashing in the graphite furnaceHIRANO, Yoshihiro; YAMAMURA, Kei; OGUMA, Koichi et al.Analytical sciences. 2001, Vol 17, Num 11, pp 1351-1354, issn 0910-6340Article

Flow-injection simultaneous determination of iron(III) and copper(II) and of iron(III) and palladium(II) based on photochemical reactions of thiocyanato-complexesOGUMA, Koichi; YOSHIOKA, Osamu.Talanta (Oxford). 2002, Vol 58, Num 6, pp 1077-1087, issn 0039-9140, 11 p.Conference Paper

Determination of traces of cadmium in natural water samples by flow injection on-line preconcentration-graphite furnace atomic absorption spectrometryHIRANO, Yoshihiro; NAKAJIMA, Junichi; OGUMA, Koichi et al.Analytical sciences. 2001, Vol 17, Num 9, pp 1073-1077, issn 0910-6340Article

On-column derivatization using redox activity of porous graphitic carbon stationary phase: An approach to enhancement of separation selectivity of liquid chromatographySHIBUKAWA, Masami; UNNO, Akihiro; MIURA, Tsutomu et al.Analytical chemistry (Washington, DC). 2003, Vol 75, Num 11, pp 2775-2783, issn 0003-2700, 9 p.Article

Effects of phase-forming cations and anions on the partition of ionic solutes in aqueous polyethylene glycol-inorganic salt two-phase systemsSHIBUKAWA, Masami; MATSUURA, Katsunori; SHINOZUKA, Yasushi et al.Analytical sciences. 2000, Vol 16, Num 10, pp 1039-1044, issn 0910-6340Article

Simultaneous determination of vanadium(IV) and vanadium(V) by flow injection analysis using kinetic spectrophotometry with Xylenol OrangeOGUMA, Koichi; YOSHIOKA, Osamu; NORO, Junji et al.Talanta (Oxford). 2012, Vol 96, pp 44-49, issn 0039-9140, 6 p.Conference Paper

Separation selectivity of aqueous polyethylene glycol-based separation systems : DSC, LC and aqueous two-phase extraction studiesSHIBUKAWA, Masami; ICHIKAWA, Ryoichi; BABA, Takayuki et al.Polymer (Guildford). 2008, Vol 49, Num 19, pp 4168-4173, issn 0032-3861, 6 p.Article

High-surface-area SiO₂-ZrO₂ prepared by depositing silica on zirconia in aqueous ammonia solutionSATO, Satoshi; TAKAHASHI, Ryoji; SODESAWA, Toshiaki et al.Journal of catalysis (Print). 2000, Vol 196, Num 1, pp 190-194, issn 0021-9517Article

Silica gel with continuous macropores prepared from water glass in the presence of poly(acrylic acid)YACHI, Akiyuki; TAKAHASHI, Ryoji; SATO, Satoshi et al.Journal of non-crystalline solids. 2005, Vol 351, Num 4, pp 331-339, issn 0022-3093, 9 p.Article

Liquid chromatography and differential scanning calorimetry studies on the states of water in polystyrene-divinylbenzene copolymer gelsBABA, Takayuki; SHIBUKAWA, Masami; HEYA, Tomoyuki et al.Journal of chromatography. 2003, Vol 1010, Num 2, pp 177-184, issn 0021-9673, 8 p.Article

Determination of uranium in seawater by flow-injection preconcentration on dodecylamidoxime-impregnated resin and spectrophotometric detectionOGUMA, Koichi; SUZUKI, Toshihiro; SAITO, Kyoichi et al.Talanta (Oxford). 2011, Vol 84, Num 5, pp 1209-1214, issn 0039-9140, 6 p.Conference Paper

Population Analysis of Structural Properties of Giant Liposomes by Flow CytometryNISHIMURA, Kazuya; HOSOI, Tomohiro; SUNAMI, Takeshi et al.Langmuir. 2009, Vol 25, Num 18, pp 10439-10443, issn 0743-7463, 5 p.Article