Characteristic L-shape Absorbance-time Curve in Indicator Reaction for the Determination of Catalyst
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The simultaneous decomposition reaction of a catalyst and indicator shows the characteristic <I>L</I>-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 [KHSO<SUB>5</SUB>] (oxidant) system and copper-phthalocyanine-tetrasulfonate / hemoglobin / KHSO<SUB>5</SUB> system.
- Chemistry Letters
Chemistry Letters 1997(9), 865-866, 1997-09
The Chemical Society of Japan