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Hiroshi Kawabe

Osaka University of Pharmaceutical Sciences

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Featured researches published by Hiroshi Kawabe.

Analyst | 1986

Applications of xanthene derivatives in analytical chemistry. Part LVII. Spectrophotometric determination of minocycline using gallium and Eosin

Itsuo Mori; Yoshikadzu Fujita; Hiroshi Kawabe; Kinuko Fujita; Takeshi Tanaka; Atsuko Kishimoto

A spectrophotometric method for the determination of micro-amounts of minocycline (MINO) as a tetracycline derivative in weakly acidic media is proposed. It is based on the formation of a ternary complex between Eosin (sodium 2,4,5,7-tetrabromofluorescein), gallium and MINO in the presence of poly(vinyl alcohol). Under optimum conditions, minocycline hydrochloride (MINO.HCl) was determined in the range 0–40 µg in 10 ml of solution at 545 nm. The apparent molar absorptivity of MINO.HCl was 1.1 × 105 l mol–1 cm–1 with a Sandell sensitivity of 0.0047 µg cm–2 MINO.HCl. The method was applied to the determination of MINO.HCl in pharmaceutical preparations.

Bulletin of the Chemical Society of Japan | 1986

Spectrophotometric determination of scandium(III) with o-hydroxyhydroquinonephthalein in cationic micellar media

Itsuo Mori; Yoshikazu Fujita; Kinuko Fujita; Atsuko Usami; Hiroshi Kawabe; Yozo Koshiyama; Takeshi Tanaka

Chemical & Pharmaceutical Bulletin | 1986

Application of o-Hydroxyhydroquinonephthalein-Iron(III) : Complex to Determination of Organic Compounds Containing Phosphorus

Yoshikazu Fujita; Itsuo Mori; Kinuko Fujita; Takeshi Tanaka; Yozo Koshiyama; Hiroshi Kawabe

Chemical & Pharmaceutical Bulletin | 1986

Color reaction among gallein, thorium(IV) and lanthanum(III) in the coexistence of amphoteric and nonionic surfactants, and its application to the determination of these ions

Itsuo Mori; Yoshikazu Fujita; Kinuko Fujita; Takeshi Tanaka; Yozo Koshiyama; Hiroshi Kawabe

Chemical & Pharmaceutical Bulletin | 1985

DETERMINATION OF PENICILLINS WITH MERCUROCHROME

Itsuo Mori; Yoshikazu Fujita; Kinuko Fujita; Shoko Kitano; Hiroshi Kawabe; Yozo Koshiyama; Takeshi Tanaka; Soyoko Miyawaki; Yuri Nagao; Kenichi Nagai

Bulletin of the Chemical Society of Japan | 1986

Color Reaction among Pyrogallol Red, Thorium(IV) and Samarium(III), and Its Application to the Determination of These Metals

Itsuo Mori; Yoshikazu Fujita; Kinuko Fujita; Shoko Kitano; Itsuko Ogawa; Hiroshi Kawabe; Yozo Koshiyama; Takeshi Tanaka

Chemical & Pharmaceutical Bulletin | 1986

Spectrophotometric determination of papaverine hydrochloride by using a membrane filter preconcentration technique with 2,4,5,7-tetrachlorofluorescein and palladium(II)

Itsuo Mori; Yoshikazu Fujita; Hiroshi Kawabe; Kinuko Fujita

Analytical Sciences | 1985

Determination of Titanium(IV) with o-Hydroxyhydroquinonephthalein and Hydrogen Peroxide1

Itsuo Mori; Yoshikazu Fujita; Hiroshi Kawabe; Kinuko Fujita; Yozo Koshiyama; Takeshi Tanaka; Nobuyuki Kawado

Chemical & Pharmaceutical Bulletin | 1989

Determination of β-lactam antibiotics in water by fluorescence quenching of mercurochrome, and application for simple investigation of potency

Itsuo Mori; Yoshikazu Fujita; Kinuko Ikuta; Shoko Kitano; Hiroshi Kawabe; Yoshihiro Nakahashi; Keiji Kato; Yoshihiko Inamori

Bulletin of the Chemical Society of Japan | 1986

Spectrophotometric determination of gentamicin by using a membrane filter preconcentration technique with o-hydroxyhydroquinonephthalein and uranium (VI).

Itsuo Mori; Yoshikazu Fujita; Kinuko Fujita; Takeshi Tanaka; Hiroshi Kawabe; Yozo Koshiyama

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Itsuo Mori

Osaka University of Pharmaceutical Sciences

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Yoshikazu Fujita

Osaka University of Pharmaceutical Sciences

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Kinuko Fujita

Osaka University of Pharmaceutical Sciences

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Takeshi Tanaka

Kyoto Pharmaceutical University

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Yozo Koshiyama

Osaka University of Pharmaceutical Sciences

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Shoko Kitano

Osaka University of Pharmaceutical Sciences

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Keiji Kato

Osaka University of Pharmaceutical Sciences

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Kinuko Ikuta

Osaka University of Pharmaceutical Sciences

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Yoshihiko Inamori

Osaka University of Pharmaceutical Sciences

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Yoshihiro Nakahashi

Osaka University of Pharmaceutical Sciences

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