University of North Florida
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Stuart Chalk, Ph.D.
Department of Chemistry
University of North Florida
Phone: 1-904-620-1938
Fax: 1-904-620-3535
Email: schalk@unf.edu
Website: @unf

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Y. Onari

Abbrev:
Onari, Y.
Other Names:
Address:
Mie Ind. Res. Inst., Tsu, Mie 514, Japan
Phone:
NA
Fax:
NA
Email:

Citations 4

"Flow Injection Analysis Of Aqueous Ozone Based On The Ozone Decoloration Reaction Of 1-(2-hydroxy-5-sulfophenylazo)-2-napthol"
Chem. Express 1989 Volume 4, Issue 6 Pages 369-372
Onari, Y.

Abstract: The determination of ozone (O3) in water based on the decoloration reaction of 1-(2-hydroxy-5-sulfophenylazo)-2-naphthol was examined by using flow injection analysis (FIA) technique. The precision of FIA signal was good and the rapid determination (120 samples/h) of sub mg/L - mg/L levels of aqueous O3 were obtained. (SFS)
Ozone Water Spectrophotometry Indirect

"Spectrophotometric Determination And FIA Of Aqueous Ozone Based On The Decolorization Reaction Of The 2-(5-bromo-2-pyridylazo)-5-(N-propyl-N-sulfopropylamino)aniline-iron(II) Complex"
Bunseki Kagaku 1994 Volume 43, Issue 8 Pages 635-639
Onari, Y.

Abstract: The degree of decolorization at 560 nm of the 3-[3-amino-4-(5-bromo-2-pyridylazo)-N-propylanilino]propanesulfonic acid-Fe(II) complex varied linearly with the concentration of O3 (apparent ε = 3604), and the detection limit was 30 µg/l. An FIA manifold for determination on the same principle is illustrated. The RSD (n = 5) at 1.47 mg/l of O3 was 0.48%, and the sampling rate was 40 per h. Normal components of drinking water did not interfere.
Ozone Water Spectrophotometry Interferences

"Application Of The Flow Injection Analysis Based On Iodometry To The Determination Of Ozone Decomposition Rate"
Bull. Chem. Soc. Jpn. 1987 Volume 60, Issue 8 Pages 3074-3076
Yasuo Onari

Abstract: The determination of ozone decomposition rate by flow injection analysis (FIA) was investigated. Under the conditions studied a sampling rate was about 43 samples/h, and the pseudo-first-order kinetic plot of the obtained data showed a good linearity. This FIA method seems to be useful for kinetic measurement of ozone decomposition in water.
Ozone Water Spectrophotometry Kinetic

"Determination Of Ozone Decomposition Rate By Flow Injection Technique"
Anal. Sci. 1988 Volume 4, Issue 6 Pages 645-648
Y. Onari

Abstract: The flow injection analysis (FIA) of dissolved ozone was investigated by employing 2% potassium iodide-0.1% starch aqueous solution as a reagent. The sampling rate and the detection limit were improved compared with values obtained with potassium iodide aqueous solution as the reagent. The sampling frequency and the reproducibility of FIA signal were 105 samples h-1 and RSD=0.28% (2.12 mg L-1 O3; n=5), respectively. The S/N of FIA signal was good (0.24 mg L-1 O3; S/N, 7.0), and the sub mg L-1 levels of ozone were easily detected. The kinetic order of ozone decomposition in water was examined by using this FIA. Application to the determination of ozone decomposition rate was achieved.
Ozone Water Spectrophotometry Catalysis Kinetic