S
Shoji Motomizu
Researcher at Okayama University
Publications - 340
Citations - 6591
Shoji Motomizu is an academic researcher from Okayama University. The author has contributed to research in topics: Detection limit & Aqueous solution. The author has an hindex of 40, co-authored 339 publications receiving 6318 citations.
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Journal ArticleDOI
Spectrophotometric determination of phosphate in river waters with molybdate and malachite green
TL;DR: In this article, the molar absorptivity was 7.8 × 104 l mol 1 cm 1 at 650 nm and the absorbance of the reagent blank was about 0.02, and its relative standard deviation was less than 10%.
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Determination of total and dissolved amount of iron in water samples using catalytic spectrophotometric flow injection analysis.
TL;DR: The amounts of free iron were detected using a catalytic action of Fe(III) and Fe(II) on the oxidation of N,N-dimethyl-p-phenylenediamine in the presence of hydrogen peroxide.
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Determination of trace heavy metals in herbs by sequential injection analysis-anodic stripping voltammetry using screen-printed carbon nanotubes electrodes
Uthaitip Injang,Peeyanun Noyrod,Weena Siangproh,Wijitar Dungchai,Shoji Motomizu,Orawon Chailapakul +5 more
TL;DR: The present method offers high sensitivity and high throughput for on-line monitoring of trace heavy metals and can be used for the automatic and sensitive evaluation of heavy metals contaminated in herb items.
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Development of novel reagent for Hantzsch reaction for the determination of formaldehyde by spectrophotometry and fluorometry
TL;DR: A novel reagent, acetoacetanilide (AAA), was introduced to the determination of formaldehyde based on Hantzsch reaction, and a simple and highly sensitive fluorometric method was achieved by using AAA.
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Trace and ultratrace analysis methods for the determination of phosphorus by flow-injection techniques.
Shoji Motomizu,Zhen-Hai Li +1 more
TL;DR: The detection method based on the chemiluminescence of luminal oxidized with molybdophosphoric acids is probably the most sensitive of all the detection methods reported so far: LOD of the method is as low as 1nM.