Open AccessKinetics of dechlorination of atrazine using tin (SnII) at neutral pH conditions
Author(s) -
Vijay Kumar,
Simranjeet Singh
Publication year - 2020
Publication title -
applied chemical engineering
Language(s) - English
Resource type - Journals
ISSN - 2578-2010
DOI - 10.24294/ace.v3i1.575
Subject(s) - chemistry , atrazine , kinetics , chlorine , tin , reaction rate constant , attenuated total reflection , metabolite , triazine , nuclear chemistry , infrared spectroscopy , organic chemistry , pesticide , biochemistry , physics , quantum mechanics , agronomy , biology
Atrazine is a broad spectrum herbicide of triazine family. It is a chlorine-containing molecule and it can persist in environment. Chemical and biochemical techniques are the main techniques used to decompose the chemicals. In pre-sent study, the dechlorination of atrazine (Atr) via reaction with Sn(II) ion under aqueous media at neutral pH condi-tions was studied. The observed dechlorinated metabolite was 4-Ethylamino-6-isopropylamino-[1,3,5]triazin-2-ol. Identification of dechlorinated product of Atr was performed by using spectroscopic (FTIR) and mass (ESI-MS) spectrometric analysis. The kinetics of the dechlorination of Atr was measured by using pseudo-first order kinetics. The observed reaction constants was, kobs = 6.11x10-2 (at 430 mg/ L of Atr), and kobs = 6.14 x10-2 (at 215 mg/ L of Atr). The calculated half-life (t1/2) period was, t1/2 = 0.204 d (at 430 mg/ L of Atr), and t1/2 = 0.205 d (at 215 mg/ L of Atr).