应用化学 ›› 1988, Vol. 0 ›› Issue (3): 32-38.

• 研究论文 • 上一篇    下一篇

菲涂在颗粒物上与NO2的反应

高士祥, 杨文襄, 徐晓白   

  1. 中国科学院生态环境研究中心, 北京
  • 收稿日期:1987-03-03 修回日期:1988-01-04 出版日期:1988-06-10 发布日期:1988-06-10

STUDY ON THE CHEMICAL REACTIONS OF PHENANTHRENE WITH NO2 ON PARTICULATES

Gao Shixiang, Yang Wenxiang, Xu Xiaobai   

  1. Research Center for Eco-Environmental Sciences, Academia Sinica
  • Received:1987-03-03 Revised:1988-01-04 Published:1988-06-10 Online:1988-06-10

摘要: 本文研究菲涂在硅胶或烟尘上与NO2的暗反应和光化学反应,藉色谱和GC/MS分析反应产物.暗反应以取代反应为主,主要产物是硝基菲.光反应的产物为2,2′-二甲酰基联苯、亚硝基-2-甲酰基联苯等,在UV辐照下以光氧化裂解为主.菲涂在硅胶上或涂在烟尘上与NO2的暗反应的明显差异可能是由于吸附在硅胶上的水分子与菲对NO2的竞争反应.产物的Ames试验指出,无致突性的菲与NO2反应可较容易地生成有直接致突性的二次污染物,对人体健康更有危害.

关键词: 菲, 大气污染物, 光化学反应, NO2

Abstract: The reactions of phenanthrene coated on silica gel or on fly ash with NO2 are studied. GC and GC/MS analyses show that the main products on siqca gel in dark arc nitro-phenanthrencs, as a result of a dominate substitution reaction, while under UV irradiation 2,2′-diformyl dibenzene, nitroso-2-formyl dibenzene, etc. are formed due to photodegradation. There is a remarkable difference between the reactions on silica gel and on fly ash in dark. It may be the results of competitive reaction of water molecule and phenanthrene with NO2 on silica gel. Ames test of the reaction Products shows that the non-mutagenic phenanthrene undergoes transformation with NO2 into direct mutagenic secondary pollutant which is more harmful to the health of human than phenanthrene itself.

Key words: Phcnanthrene, Air pollutant, Photochemical reaction, NO2