Electrochemical behavior of methylparathion under UV irradiation

Citation
Ja. Manzanilla-cano et al., Electrochemical behavior of methylparathion under UV irradiation, INT J ENV A, 80(2), 2001, pp. 115-127
Citations number
27
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Environment/Ecology
Journal title
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
ISSN journal
0306-7319 → ACNP
Volume
80
Issue
2
Year of publication
2001
Pages
115 - 127
Database
ISI
SICI code
0306-7319(2001)80:2<115:EBOMUU>2.0.ZU;2-1
Abstract
The electrochemical behavior of methylparathion under UV irradiation was mo nitored by polarography in an aqueous medium (pH 6.5) at 254 and 366 nm, an d the effects of atmospheric oxygen and TiO2 On methylparathion were also l ooked at. Dissapearance of the methylparathion and appearance of two major electroactive degradation products were observed. The reaction rate constan ts for the process ranged from 3.55 x 10(-5) to 5.69 x 10(-5) s(-1), and th e reaction showed pseudo-first-order kinetics. The methylparathion transfor mation did not depend on the experimental conditions. Spectroscopic and ele ctrochemical data suggest the presence of p-nitrobenzoic acid as a common e lectroactive product.