title: Kinetics and mechanism of amitraz hydrolysis in aqueous media by HPLC and GC-MS.
abstract: Degradation processes of amitraz in aqueous media have been studied by spectrophotometry, HPLC and GC-MS. Amitraz undergoes hydrolysis reactions at any pH, but towards the acidic pH range hydrolysis proceeds at a faster rate. Depending on the pH value, different products of the hydrolysis have been identified. The main degradation products are 2,4-dimethylaniline at very acidic pH values (pH<3), N-(2,4-dimethylphenyl)-N'-methylformamidine and 2,4-dimethylphenylformamide at less acidic media (pH 3-6) and 2,4-dimethylphenylformamide at basic pH. The mechanisms of the different hydrolysis processes have been elucidated.
authors.affiliation: Department of Analytical Chemistry, Faculty of Sciences, University of the Basque Country, P.O. Box 644, 48080 Bibao, Spain.
authors.forename: E
authors.initials: E
authors.lastname: Corta
authors.forename: A
authors.initials: A
authors.lastname: Bakkali
authors.forename: L A
authors.initials: LA
authors.lastname: Berrueta
authors.forename: B
authors.initials: B
authors.lastname: Gallo
authors.forename: F
authors.initials: F
authors.lastname: Vicente