环境工程学报2012，Vol.6Issue(8)：2555-2559,5.
酪氨酸氯化过程中光谱变化特征及消毒副产物的生成规律
Spectrum changes and disinfection by-product formation during chlorination of tyrosine
摘要
Abstract
The changes of residual chlorine, UV absorbance values, fluorescence spectrum and 4-hydroxy- benzyl cyanide （4-HBC） concentration after chlorination of tyrosine solution were investigated. The results showed that residual chlorine firstly increased with increasing chlorine doses, then decreased with increasing chlorine doses, and finally increased again. The values of UV254, UV274, UV280 and formation of 4-HBC in- creased with increasing chlorine doses from 0 to 0.5 mmol C12/L, and then decreased sharply with increasing chlorine doses from 0.5 ~ 1 mmol C12/L. The changes of UV absorbance values suggested that low dose of chlo- rine induced formation of unsaturated bonds in chlorinated tyrosine solution, while high dose of chlorine de- creased the unsaturated bonds. By measuring fluorescent spectroscopy of chlorinated tyrosine, fluorescence inten- sity of the band maximum was found to increase sharply with the addition of sodium chlorine at 0.05 mmol C1J L, indicating that chlorination with low doses can produce substances with stronger fluorescence intensity than tyrosine. However, the fluorescence intensity decreased to non-detected with the increase of chlorine doses from 0.5 - 1 mmol C12/L, suggesting that chlorine at high doses would decrease the fluorescent structure of tyrosine.关键词
氯消毒/酪氨酸/余氯/紫外吸光度值/三维荧光光谱/对羟基苯乙腈Key words
chlorination/tyrosine/residual chlorine/UV absorbance/fluorescence spectra/4-hydroxybenzyl cyanide分类
资源环境引用本文复制引用
丁亚楠,李轶,吴乾元,胡洪营..酪氨酸氯化过程中光谱变化特征及消毒副产物的生成规律[J].环境工程学报,2012,6(8):2555-2559,5.基金项目
国家杰出青年科学基金项目 （）
国家高科技研究发展计划（863）项目 （）
