TITLE:
Voltammetric Behavior of Tembotrione Using Silver/Amalgam Electrode
AUTHORS:
Milica Jović, Dragan Manojlović, Dalibor Stanković, Anđelija Milić, Milica Sentić, Goran Roglić
KEYWORDS:
Pesticide; Tembotrione; Cyclic Voltammetry; Voltammetric Behavior; Silver/Amalgam Electrode
JOURNAL NAME:
American Journal of Analytical Chemistry,
Vol.4 No.1,
January
22,
2013
ABSTRACT: Tembotrione is herbicide which belongs to the triketone
group of herbicides. It’s registered as a selective, post-emergence
herbicide developed for the control of a broad spectrum broadleaf and grassy
weeds in corn. There is little information about tembotrione because of his
short presence in the market. Due to its ever wider application, it is
important to know the details of its chemical characteristics and redox
processes, including biogeochemical transformation and migration after
application to agricultural land, which could contribute to its efficient and
safer application. In this paper we examined voltammetric behavior of tembotrione using
Silver/Amalgam (Ag/Hg) electrode. For the investigation of electrochemical
behavior we used the cyclic voltammetry technique, with conventional
three-electrode cell and electrochemical workstation. During the experiment
pH values of solution varieties while constant concentration of tembotrione
was maintained. Cyclic voltammograms were recorded at pH values 6, 8, 10 and
12, at which tembotrione was electrochemically active. At this pH values two
signals were observed. Optimum pH value, at which the current intensity
was greatest, was 12. Obtained results provide relevant information on the
electrochemical behavior of tembotrione, which can serve as a basis for the
development of electrochemical techniques for the removal and degradation of
this pesticide in the environment.