T
Tetsutaro Yoshinaga
Researcher at Kyushu Institute of Technology
Publications - 33
Citations - 398
Tetsutaro Yoshinaga is an academic researcher from Kyushu Institute of Technology. The author has contributed to research in topics: Absorption spectroscopy & Alkali metal. The author has an hindex of 11, co-authored 33 publications receiving 367 citations. Previous affiliations of Tetsutaro Yoshinaga include Kyushu Kyoritsu University & Gunma University.
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Journal ArticleDOI
Rapid Determination of Anionic Surfactants by Improved Spectrophotometric Method Using Methylene Blue
Masaaki Koga,Yasushi Yamamichi,Yasuyo Nomoto,Maki Irie,Toshifumi Tanimura,Tetsutaro Yoshinaga +5 more
TL;DR: In this article, a rapid and simple method for the determination of anionic surfactants in tap water has been developed, which requires only one half of sample (50 ml), one tenth of the extraction solvent (chloroform=5 ml), and one sixth of the analytical time compared with the official analytical method.
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The recovery of lithium from geothermal water in the Hatchobaru area of Kyushu, Japan.
TL;DR: In this article, the recovery of lithium from geothermal water at Hatchobaru in Kyushu, Japan, was investigated using coprecipitation method using aluminium salts, which achieved an almost complete recovery of Li by the removal of calcium ions and polymerized silica.
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Alkaline dechlorination of poly(vinyl chloride) in organic solvents under mild conditions
Tetsutaro Yoshinaga,Makoto Yamaye,Taketoshi Kito,Tomoyuki Ichiki,Masahiko Ogata,Jie Chen,Hiroshi Fujino,Toshifumi Tanimura,Takeshi Yamanobe +8 more
TL;DR: In this article, a mild alkaline hydrolysis of poly(vinyl chloride) (PVC) in an organic solvent was conducted with a satisfactory degree of dechlorination (DD).
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Deprotonation processes of ellagic acid in solution and solid states
Miki Hasegawa,Mayumi Terauchi,Yuko Kikuchi,Akiko Nakao,Jun Okubo,Tetsutaro Yoshinaga,Hiroshi Hiratsuka,Michio Kobayashi,Toshihiko Hoshi +8 more
TL;DR: In this paper, the electronic absorption and polarized absorption spectra were measured at various pH conditions for ellagic acid, and it was shown that ellagic acids exist in a 7:3 mixture of ethanol and water as free in the pH region less than 0.5.
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Electronic absorption spectra of pyrene and hydropyrenes.
TL;DR: In this article, the absorption spectra of the samples in the non-stretched poly(vinyl alcohol) films were divided into two component spectra polarized along the long (x) and short (z) axes of the molecular plane.