4-氯苯酚在水溶液中的光化学反应(Ⅰ)单线态氧和自由基的产生  

PHOTOREACTION OF 4 CHLOROPHENOL IN AQUATIC SOLUTIONS (Ⅰ) GENERATION OF SINGLE OXYGEN AND FREE RADICAL

作　　者：郁志勇[1] 王文华[1] 彭安[1] 王淑琴[1] 徐维并[1] 

机构地区：[1]中国科学院生态环境研究中心

出　　处：《环境科学学报》1997年第3期312-316,共5页Acta Scientiae Circumstantiae

基　　金：国家自然科学基金

摘　　要：在模拟太阳光照射下，４氯苯酚（４ＣＰ）浓度迅速降低，反应过程对应着产生大量的单线态氧和自由基．金属离子Ｆｅ２＋、Ｆｅ３＋、Ａｌ３＋能够加速这一过程，尤以Ｆｅ２＋、Ｆｅ３＋的影响更明显；在模拟太阳光照射下，向４ＣＰ体系加入的富里酸（ＦＡ），对４ＣＰ浓度降低略起抑制作用，这表明二者之间存在相互作用．但当再加入金属离子Ｆｅ２＋、Ｆｅ３＋、Ａｌ３＋后，能够加速４ＣＰ浓度降低，尤以Ｆｅ２＋、Ｆｅ３＋的影响更显著．Exposed to simulated sunlight, the concentration of 4 CP reduced rapidly. During this process, a large amount of single oxygen ( 1O 2) and free radicals (ROO·,HO·) were generated. Metal ions, such as Fe 2+ , Fe 3+ , and Al 3+ , especially Fe 2+ and Fe 2+ could accelerate this process. Under simulated sunlight, the fulvic acid (FA) added into 4 CP system could restrain the reduction of the 4 CP concentration, indicating that there was an interaction between FA and 4 CP. After metal ions (Fe 2+ , Fe 3+ , Al 3+ ) were added, they could accelerate the reduction of 4 CP concentration.

关 键 词：4-氯苯酚 单线态氧 光化学反应 水溶液 

分 类 号：X132[环境科学与工程—环境科学]