An Autocatalytic Constant Sensitivity Detection System for Catalysts and Infectors

Abstract

Mathematical model calculation shows that the shape of the reactant concentration-time curves of autocatalytic reaction system at their inflection time is similar to each other even for different initial concentrations of catalysts. It should be of great value as a theoretically infinite sensitivity detection system for catalysts or its infectors. This model has been demonstrated by the use of oxidative destruction of cobalt complexes of 2,4-(2-pyridylazo)benzenediolate and phthalocyaninetetrasulfonate with peroxomonosulfate in aqueous phosphate buffer solution (pH 7) at 25 °C.

Autocatalytic reaction on low-dimensional substrates

“…However, one of the most interesting applications of the Final Time is analytic [20,24]: as we will show, τ sensitively depends on N , that is on the initial amount of reactant. Hence, given a trace reactant, its determination can be achieved by means of spectrophotometric measures of τ .…”

3-Phenyl-3,3-ethylenedioxy-1-propyl Sulfonates as Acid Amplifiers To Enhance the Photosensitivity of Positive-Working Photoresists

“…For the autocatalytic reaction written in eq 1, where A and B denote the ketal 1a and TsOH, respectively, the disappearance of A to give product(s) C can be expressed as the eq 2 . Here, [A] 0 and [B] 0 are the initial concentrations of A and B, while [A] is the concentration of A at time = t .…”

Determination of Ultratrace Amounts of Ruthenium(III) by the Delayed Autocatalytic Reaction Using Citric Acid

“…The dashed lines in Fig. 3 indicate the absorption-time curve of reaction (1). In this case, though it had become feasible to determine 10 -9 M levels of ruthenium(III), it was impossible to determine less than 10 -9 M by measuring the time from the reaction beginning until the end.…”

“…1 With this reaction system, it is possible to determine a 10 -30 M trigger. In practice, however, such an analytical method has not yet been realized.…”