Photochemical reaction between biphenyl and N(III) in the atmospheric aqueous phase.

Abstract

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 H2ONO+ (k1), HONO (k2) and NO2- (k3) were k1 = (0.058 ± 0.005 L mol-1 s-1), k2 = (0.12 ± 0.06 L mol-1 s-1) and k3 = (0.0019 ± 0.0003 L mol-1 s-1), 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 × 109 L mol-1 s-1. The products analysis suggested that Bp-OH adduct could be nitrated by N (III) and NO2 to generate nitro-compounds.

DOI: 10.1016/j.chemosphere.2016.10.010

Cite this paper

@article{Ma2017PhotochemicalRB, title={Photochemical reaction between biphenyl and N(III) in the atmospheric aqueous phase.}, author={Jianzhong Ma and Chengzhu Zhu and Jun Lu and Tao Wang and Shuheng Hu and Tian-hu Chen}, journal={Chemosphere}, year={2017}, volume={167}, pages={462-468} }