酚类化合物的光化学降解研究

Study on Degradation or Phenols by Photo-Catalysis

本文研究了紫外光（ＵＶ）、亚铁离子（Ｆｅ^（２＋）和过氧化氢（Ｈ_２Ｏ_２）相结合对酚类化合物的光化学降解作用，采用正交设计优化实验条件，多元线性回归分析数据。结果表明：影响光化学降解的因素从大到小依次为；ｐＨ、酚浓度、光照时间、过氧化氢的量和亚铁离子的量．采用该法处理实际水样，光照２０ｍｉｎ，其酚类化合物的降解百分数达９０．４％，并用ＧＣ－ＭＳ讨论了三种酚的降解历程。

Decomposition of phenols has been studied by the photo - catalysis of the system of ultraviolet light, hydrogen peroxide and ferrous ion.The experimental condition is optimized by orthogonal design and .the data are processed with multiple linear regression. The results indicate that the rank of factors, which have effect on removing phenols from great to small, is pH, the concentration of analyte, radiation time and the contents of hydrogen peroxide and ferrous ion. Phenols of sample could be removed up to 90.4% within 20 minutes in this way. The process of degradation phenols has been discussed with GC-MS.