Photodegradation of imidacloprid

被引：144
|
作者：
Wamhoff, H [1 ]
Schneider, V [1 ]
机构：
[1] Univ Bonn, Kekule Inst Organ Chem & Biochem, D-53121 Bonn, Germany
来源：
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY | 1999年 / 47卷 / 04期
关键词：
imidacloprid; Confidor insecticide; HPLC; quantification; TiO2;
D O I：
10.1021/jf980820j
中图分类号：
S [农业科学];
学科分类号：
09 ;
摘要：
The photolytic decomposition of the insecticide imidacloprid (1) in HPLC grade water and of imidacloprid as the formulated product Confider insecticide in tap water was studied using HPLC methodology. The structures of several degradates have been determined in aquatic medium, and the DT50 values of imidacloprid and Confider have been measured. In addition, the influence of TiO2 on the photodegradation of Confider was studied. The photoproduct 1-(6-chloro-3-pyridinyl)methyl-2-imidazolidinone (5) has been identified as the main degradate in each of the three series of experiments by several analytical techniques. The photolytic half-lives for imidacloprid under the conditions of this study were 43 min in HPLC grade water, 126 min formulated as Confider in tap water, and 144 min formulated as Confider in tap water in the presence of TiO2.
引用
收藏
页码：1730 / 1734
页数：5
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