Ryozo Nakashima

Syntheses of azo dyes containing 4,5-diphenylimidazole and their evaluation as analytical reagents

Shozo Shibata, Masamichi Furukawa, Ryozo Nakashima · Analytica Chimica Acta · 1976 · 43 citations

Natural Sciences, Chemical Engineering, Chemistry +8

2-[2-(5-Bromopyridyl)azo]-5-dimethylaminophenol; a new sensitive reagent for cadmium

Shozo Shibata, Eijiro Kamata, Ryozo Nakashima · Analytica Chimica Acta · 1976 · 24 citations

Natural Sciences, Chemistry, Toxicology +8

The spectrophotometric determination of palladium with 4-[(5-chloro-2-pyridyl)azo]-1,3-diaminobenzene

Shozo Shibata, Yoshio Ishiguro, Ryozo Nakashima · Analytica Chimica Acta · 1973 · 23 citations

Natural Sciences, Chemistry, Analytical Chemistry +3

Dual-wavelength spectrophotometry

Shozo Shibata, Masamichi Furukawa, Ryozo Nakashima · Analytica Chimica Acta · 1976 · 19 citations

Determination of trace amounts of thorium and uranium in coal ash by inductively coupled plasma atomic emission spectrometry after extraction with 2-thenoyltrifluoroacetone and back-extraction with dilute nitric acid

Eijiro Kamata, Ryozo Nakashima, Masamichi Furukawa · Journal of Analytical Atomic Spectrometry · 1987 · 13 citations

Natural Sciences, Chemistry, Mining Engineering +17