Kinetic determination of pyrogallol by a novel oscillating chemical reaction catalyzed by a tetraazamacrocyclic complex

Determination of Alizarin Red S using a novel B-Z oscillation system catalyzed by a tetraazamacrocyclic complex

“…The potential dropped sharply to the minimum value and then increased to normal oscillation levels. This phenomenon is quite similar to that of the determination of hydroquinone [36] and pyrogallol [27]. The relationship between the changes of the oscillation amplitude and the logarithm of Alizarin Red S concentrations fits a polynomial relationship and the system resumes from the perturbation rapidly, so a new method could be expected to exploit this behavior for determining Alizarin Red S.…”

“…The ligand, L, in the complex is 5,7,7,12,14,14-hexamethyl-1,4,8,11-tetraazacyclotetradeca-4,11-diene . Based on this new B-Z oscillating system, Ag + [21] and pyrogallol [27] were determined by perturbations of analyte on the oscillating system. Alizarin Red S is widely used as an acid-base indicator, biological colourings, metallic coloring agent, and mordant dye.…”

Entropy Flow of Chemical Oscillating Reactions Involving Amino Acids

“…Oscillation techniques have attracted more and more interest in recent years due to their high selectivity and sensitivity to chemical composition [1,2]. In order to understand the characteristics of chemical oscillating reactions in organisms, simulations of oscillating behaviors of organisms are of great significance to understand ourselves and reveal the movement of organisms.…”

Determination of catechol based on an oscillating chemical reaction involving a macrocyclic complex as catalyst

“…An example of a macrocyclic complex-catalyzed oscillating reaction [15] is the system of NaBrO 3 -H 2 SO 4 -Malic acid-[CuL] (ClO 4 ) 2 , where the ligand L in the complex [CuL] (ClO 4 ) 2 is 5,7,7,12,14,14-hexemethyl-1,4,8,11-tetraazacyclotetradeca-4,11-diene. As the [CuL](ClO 4 ) 2 -catalyzed oscillating system has been used for kinetic determination of Ag + [16] and pyrogallol [17], we have surveyed the effect of catechol perturbation.…”