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Vol. 32 No. 2 (2020): Vol 32 Issue 2

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Kinetics of Micellar Effect of Non-Ionic Surfactant on Oxidative Degradation of Ciprofloxacin

https://doi.org/10.14233/ajchem.2020.22343
Ajaya Kumar Singh
Department of Chemistry, Government Vishwanath Yadav Tamaskar Postgraduate Autonomous College, Durg-491001, India
Alpa Shrivastava
Department of Chemistry, Indira Gandhi Government Arts, Commerce and Science College, Vaishali Nagar, Bhilai, Durg-490020, India
Dilip R. Shrivastava
Department of Chemistry, Dr. Khoobchand Baghel Government Arts and Science Postgraduate Autonomous College, Bhilai-490020, India
Rajmani Patel
Department of Chemistry, Hemchand Yadav University, Durg-491001, India
Neerja Sachdev
Department of Chemistry, Government Vishwanath Yadav Tamaskar Postgraduate Autonomous College, Durg-491001, India

Corresponding Author(s) : Alpa Shrivastava

alpashubhe@yahoo.com

Asian Journal of Chemistry, Vol. 32 No. 2 (2020): Vol 32 Issue 2

Abstract

Oxidative degradation kinetics of leading fluoroquinolone family drug ciprofloxacin (CIP) by chloramine-T (CAT) in TX-100 micelle media was studied spectrophotometrically at 275 nm and 298 K. In pseudo-first-order conditions the rate constant (kobs) decreased regularly with increasing [TX-100]. To understand the self-organizing activities of TX-100, CMC values in varying reaction conditions had been evaluated. The role of non-ionic surfactant in the oxidative degradation process of ciprofloxacin by chlorinating agent chloramine-T is explained in terms of mathematical model explained by Menger-Portnoy. The reaction showed first to zero order dependence on [CAT] and fractional order on [CIP]. Increasing [H+] decreased the rate of reaction. The effect of ionic strength and solvent polarity of the medium in reaction conditions were studied. The effects of added salts [HSO4Na], [KCl], [KNO3] and [K2SO4] had also been studied. The stoichiometry of the reaction determined was 1:2 and the oxidation products were identified by LC-EI-MS. The analysis of degradation product of ciprofloxacin evidently reveals that the piperazine moiety is active site for oxidation in the reaction. Activation parameters were studied to propose appropriate mechanism for the reaction.

Keywords

Ciprofloxacin Chloramine-T Triton X-100 Oxidative degradation Micelle
Singh, A. K., Shrivastava, A., Shrivastava, D. R., Patel, R., & Sachdev, N. (2019). Kinetics of Micellar Effect of Non-Ionic Surfactant on Oxidative Degradation of Ciprofloxacin. Asian Journal of Chemistry, 32(2), 359–368. https://doi.org/10.14233/ajchem.2020.22343
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