玫瑰红作用下γ-六氯环己烷在冰相中的光敏化降解

发布时间：2018-02-03 17:25

本文关键词： γ-六氯环己烷玫瑰红冰光降解　出处：《高等学校化学学报》2017年05期 　论文类型：期刊论文

【摘要】：考察了在玫瑰红(RB)存在下γ-六氯环己烷(γ-HCH)在冰中的光降解.结果表明,光敏剂RB通过其激发态[RB]~*及其产生的~1O_2~*加速了γ-HCH的光降解,RB浓度是影响光降解率最显著的因素;γ-HCH在较低初始浓度下的光敏化降解更快;无机盐离子的种类和浓度可以改变冰表面上类液层(LLL)的比例从而影响γ-HCH的光解.通过分析γ-HCH光降解产物提出了RB存在时冰中γ-HCH的光降解作用机理.
[Abstract]:The photodegradation of 纬 -HCH (纬 -HCH) in ice in the presence of rose-red red (RBB) was investigated. The results showed that the excited state of Guang Min RB was determined by its excited state. [The photodegradation of 纬 -HCH was accelerated by RB * and its production, and the concentration of RB was the most significant factor affecting the photodegradation rate of 纬 -HCH. The degradation of 纬 -HCH was faster when the initial concentration of 纬 -HCH was lower. The species and concentration of inorganic salt ions can change the LLLLL of the liquid like layer on the ice surface. The photodegradation mechanism of 纬 -HCH in ice was proposed by analyzing the photodegradation products of 纬 -HCH.
【作者单位】：吉林大学地下水资源与环境教育部重点实验室;太原工业学院环境与安全工程系;吉林建筑大学松辽流域水环境教育部重点实验室;
【基金】：国家自然科学基金(批准号:41073063,41403101)资助~~
【分类号】：O644.1;X132
【正文快照】： 由于全球蒸馏作用和挥发性及半挥发性有机物的大气长程传输,永久性或临时性的冰已成为环境污染物重要的汇集物,特别是持久性有机污染物(POPs)可通过吸附和分配等方式与冰进行强相互作用.这些污染物及其二次反应产物经过融化过程进入水生和陆地生态系统,对生态环境产生不利影响

【相似文献】