Kinetics and mechanism of amitraz hydrolysis in aqueous media by HPLC and GC-MS

被引：42

作者：

Corta, E ^{[1
]}

Bakkali, A ^{[1
]}

Berrueta, LA ^{[1
]}

Gallo, B ^{[1
]}

Vicente, F ^{[1
]}

机构：

[1] Univ Basque Country, Fac Sci, Dept Analyt Chem, Bibao 48080, Spain

来源：

TALANTA | 1999年 / 48卷 / 01期

关键词：

amitraz; hydrolysis; kinetics; HPLC;

D O I：

10.1016/S0039-9140(98)00237-9

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

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. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：189 / 199

页数：11