联苯与大气水相中N(III)的光化学反应。
Photochemical reaction between biphenyl and N(III) in the atmospheric aqueous phase.
作者信息
Ma Jianzhong, Zhu Chengzhu, Lu Jun, Wang Tao, Hu Shuheng, Chen Tianhu
机构信息
School of Resource and Environmental Engineering, Hefei University of Technology, Hefei 230009, PR China; Institute of Atmospheric Environment & Pollution Control, Hefei University of Technology, Hefei 230009, PR China.
School of Resource and Environmental Engineering, Hefei University of Technology, Hefei 230009, PR China; Institute of Atmospheric Environment & Pollution Control, Hefei University of Technology, Hefei 230009, PR China.
出版信息
Chemosphere. 2017 Jan;167:462-468. doi: 10.1016/j.chemosphere.2016.10.010. Epub 2016 Oct 14.
The photochemical reaction between biphenyl (Bp) and N(III) under irradiation at 365 nm UV light was investigated. The results showed that Bp conversion efficiency was strongly influenced by N (III) concentration, Bp initial concentration and pH. Species-specific rate constants determined by reaction of Bp with HONO (k), HONO (k) and NO (k) were k = (0.058 ± 0.005 L mol s), k = (0.12 ± 0.06 L mol s) and k = (0.0019 ± 0.0003 L mol s), respectively. Laser flash photolysis studies confirmed that OH radical deriving from the photolysis of N(III) attacked aromatic ring to form Bp-OH adduct with a rate constant of 9.4 × 10 L mol s. The products analysis suggested that Bp-OH adduct could be nitrated by N (III) and NO to generate nitro-compounds.
研究了联苯（Bp）与N（III）在365nm紫外光照射下的光化学反应。结果表明，Bp的转化效率受N（III）浓度、Bp初始浓度和pH值的强烈影响。通过Bp与HONO（k）、HONO（k）和NO（k）反应测定的物种特异性速率常数分别为k =（0.058±0.005 L mol⁻¹ s⁻¹）、k =（0.12±0.06 L mol⁻¹ s⁻¹）和k =（0.0019±0.0003 L mol⁻¹ s⁻¹）。激光闪光光解研究证实，N（III）光解产生的OH自由基攻击芳环，以9.4×10⁹ L mol⁻¹ s⁻¹的速率常数形成Bp-OH加合物。产物分析表明，Bp-OH加合物可被N（III）和NO硝化生成硝基化合物。
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