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Electroanalytical studies of chlorophylls and their determination
Author(s) -
Wang Naixing,
Di Pingping,
Yu Tangdi,
Chen Jianmin,
Deng Jiaqi
Publication year - 1991
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.1140030817
Subject(s) - polarography , chemistry , reaction rate constant , kinetics , detection limit , zero order , reaction rate , pulse (music) , order of reaction , kinetic energy , analytical chemistry (journal) , first order , chromatography , organic chemistry , voltage , catalysis , physics , mathematics , quantum mechanics
The differential pulse polarographic behavior and quantitation of chlorophylls have been investigated. The detection limit is 2.4 × 10 −7 M. The kinetics of the photolytic reaction of chlorophylls has been explored. Some kinetic parameters of the reaction system and the possibilities of a path for the photolytic reaction of chlorophylls have been measured and established. This reaction shows zero order kinetics with a rate constant of 3.3 × 10 −6 mol · dm −3 · hr −1 ; with the help of the Arrnhenius relation, the activation energies of this reaction were determined. The method was successfully applied to the determination of chlorophylls in toothpaste and several kinds of green leaves.