Chemistry Letters
Online ISSN : 1348-0715
Print ISSN : 0366-7022
ISSN-L : 0366-7022
Characteristic L-shape Absorbance-time Curve in Indicator Reaction for the Determination of Catalyst
Keiji TakahataToshimasa NagoshiShukuro Igarashi
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1997 Volume 26 Issue 9 Pages 865-866

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Abstract

The simultaneous decomposition reaction of a catalyst and indicator shows the characteristic L-shape absorbance-time curve. This reaction system provides the kinetic behavior (i.e., the chemical amplification) and the equilibrium behavior. Also, it becomes possible to have a highly-sensitive determination of a catalyst without the limitation of measuring time. This new concept of sensing was realized using the 5,10,15,20-tetrakis(4-sulfophenyl)porphine (indicator) / iron-chlorophyllin complex (catalyst) / peroxomonosulfate [KHSO5] (oxidant) system and copper-phthalocyanine-tetrasulfonate / hemoglobin / KHSO5 system.

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© 1997 The Chemical Society of Japan
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