紫外光作用下冰相中α-萘酚的光转化  

Photoconversion of α-Naphthol under UV Irradiation in Ice

作　　者：薛洪海[1] 郭志新[1] 王云凤[1] 李林璘[1] 李哲[1] 康春莉[1] 

机构地区：[1]吉林大学环境与资源学院,长春130012

出　　处：《吉林大学学报（理学版）》2011年第6期1157-1161,共5页Journal of Jilin University:Science Edition

基　　金：国家自然科学基金(批准号:20577014;41073063)

摘　　要：采用室内模拟实验研究紫外光作用下α-萘酚的冰相光转化规律,考察了其影响因素,分析了光转化产物,并推断了反应机制.实验结果表明:在紫外光作用下,冰相中α-萘酚可以发生光转化,其转化率随α-萘酚初始浓度的增加而降低,随光强的增大和超声时间的延长而增加;天然松花江水中α-萘酚的光转化较纯水中快;强酸性或强碱性条件有利于α-萘酚的光转化;加入NO3-,NO2-,HCO3-,Fe2+,Fe3+和Mn2+均促进了α-萘酚的光转化,Cl-对α-萘酚光转化的影响不明显.通过GC-MS检测出冰相中α-萘酚的4种光转化产物,推测其光转化途径为缩合、氧化和还原反应.We investigated the photoconversion laws of α-naphthol in laboratory simulation experiments in ice under UV irradiation, studied the impact factors, analyzed the photoproducts, and deduced reaction mechanisms. The results show that α-naphthol could be photoconverted under UV irradiation in ice, and the conversion rate increased with the decreasing of initial concentration of α-naphthol, and increased with the increasing of light intensity and ultrasonic time. The photoconversion rate of α-naphthol in natural Songhua River water was faster than that in distilled water. Strong acidic or basic conditions were beneficial to the photoconversion of α-naphthol. Added NO^3-, NO^2-, HCO^3-, Fe^2＋, Fe^2＋, and Mn^2＋ all promoted the photoconversion of α-naphthol. C1^- had no significant impact on the photoconversion of α-naphthol. Four photoproducts were determined by GC-MS in the photoconversion of α-naphthol, and the proposal photoconversion pathways of α-naphthol were condensation, oxidation and reduction reactions.

关 键 词：Α-萘酚 光转化 冰 

分 类 号：X132[环境科学与工程—环境科学]