Fundación CEAM, C/Charles R. Darwin, 14, Parque Tecnológico , 46980 Paterna , Valencia , Spain.
Department of Agroecology , Aarhus University , DK-4200 Slagelse , Denmark.
Environ Sci Technol. 2018 Aug 21;52(16):9136-9144. doi: 10.1021/acs.est.8b02157. Epub 2018 Jul 30.
The gas-phase atmospheric degradation of prosulfocarb (a widely used thiocarbamate herbicide in winter cereals) at different NOx concentrations was investigated at the large outdoor European PHOtoREactor (EUPHORE) in Valencia, Spain. Photolysis under sunlight conditions and reaction with ozone were shown as unimportant. The rate constant for the reaction of prosulfocarb with OH radicals was determined as k = (2.9 ± 0.5) × 10 cm molecule s at 288 ± 10 K and atmospheric pressure by a conventional relative rate method. Significant ozone and aerosol formation was observed following the reaction of prosulfocarb with OH radicals, and the main detected carbon-containing gas-phase products were benzaldehyde, S-benzyl formyl(propyl)carbamothioate, and S-benzyl propanoyl(propyl)carbamothioate.
在西班牙巴伦西亚的大型户外欧洲光反应器（EUPHORE）中，研究了不同 NOx 浓度下代森联（一种广泛用于冬小麦的硫代氨基甲酸酯类除草剂）在气相中的大气降解情况。结果表明，阳光照射下的光解和与臭氧的反应并不重要。通过传统的相对速率法，在 288 ± 10 K 和大气压力下，确定了代森联与 OH 自由基反应的速率常数 k =（2.9 ± 0.5）×10cm3分子-1s-1。代森联与 OH 自由基反应后，观察到明显的臭氧和气溶胶形成，主要检测到的含碳气相产物为苯甲醛、S-苄基甲酰（丙基）氨基硫代甲酸酯和 S-苄基丙酰（丙基）氨基硫代甲酸酯。
