GSMA, UMR CNRS 7331, Université de Reims Champagne Ardenne, U.F.R. Sciences Exactes et Naturelles Moulin de la Housse, BP 1039, 51687 Reims, France; Equipe de Génie de l'Environnement et de Biotechnologie, ENSA, Université Ibn Zohr, BP 1136, Agadir, Morocco.
GSMA, UMR CNRS 7331, Université de Reims Champagne Ardenne, U.F.R. Sciences Exactes et Naturelles Moulin de la Housse, BP 1039, 51687 Reims, France.
Chemosphere. 2015 Sep;134:301-6. doi: 10.1016/j.chemosphere.2015.04.046. Epub 2015 May 15.
This article is concerned with the study of the photochemical degradation of bupirimate adsorbed on a quartz surface by atmospheric oxidants, namely ozone and OH radicals. OH oxidation experiments were conducted relative to two reference compounds, terbuthylazine and (4-chlorophenyl)(3,4-dimethoxyphenyl) methanone. Meanwhile, ozone oxidation experiments were performed in the absolute mode and were interpreted by both, the Surface Layer Reaction and the Gas Surface Reaction models of heterogeneous reactions. The obtained results show that the rate constants for the reactions between bupirimate and OH radicals and ozone are (cm(3)molecule(-1)s(-1)): (1.06 ± 0.87) × 10(-12) and (5.4 ± 0.3) × 10(-20), respectively. As a consequence, for the experimental conditions used in this study, the lifetime of bupirimate at quartz like surface/atmosphere interfaces is several months against ozone and a tenth of days against OH-radical.
这篇文章研究了大气氧化剂（臭氧和 OH 自由基）吸附在石英表面上的双丙环唑的光化学降解。进行了 OH 氧化实验，涉及两种参考化合物，特丁津和（4-氯苯基）（3,4-二甲氧基苯基）甲酮。同时，在绝对模式下进行了臭氧氧化实验，并通过非均相反应的表面层反应和气体表面反应模型进行了解释。得到的结果表明，双丙环唑与 OH 自由基和臭氧之间的反应速率常数分别为（cm(3)molecule(-1)s(-1))：（1.06 ± 0.87）× 10(-12)和（5.4 ± 0.3）× 10(-20)。因此，对于本研究中使用的实验条件，双丙环唑在石英样表面/大气界面上的半衰期为几个月对臭氧，对 OH-自由基为十天的十分之一。
