Kinetic Determination of Paracetamol using a Novel Belousov-Zhabotinskii Oscillating System Catalyzed by a Tetraazamacrocyclic Complex

A new analytical method for determination of paracetamol is proposed. This method is based on a novel B-Z oscillating system, which involves a Tetraazamacrocyclic Complex [CuL](ClO4)2as catalyst and malic acid as the substrate. The ligand L in the complex is 5,7,7,12,14,14-hexamethyl-1,4,8,11-tetraazacyclotetradeca-4,11-diene. By perturbation mount of paracetamol on the B-Z system, there is a linear relationship between the changes in the oscillation amplitude and the logarithm of paracetamol concentration in the range 5×10-7to 2×10-4M, with a correlation coefficient of 0.99743. The effects of influential variables, such as the concentration of reaction components, temperature and on the determinations were studied. The probable mechanism involving the perturbation of paracetamol on the oscillating chemical system was also discussed.

STUDY ON THE FREQUENCY CHARACTERISTIC OF PHOTOCHEMICAL OSCILLATORY SYSTEM

As a typical oscillating chemical system, the frequency characteristic of photochemical oscillatory system is analyzed by a reliable oscillation frequency spectrum (OFS) approach. The results show that every periodic signal have a special OFS. The relative standard deviation (RSD) values of frequencies of four relative oscillating signals which belong to photochemical oscillatory system are extracted. They have multi-frequency characteristic. OFS successfully realizes the extraction and calculation of photochemical oscillatory system. OFS can be used to analyze the frequency of complex periodic signal accurately and be suitable for many areas.