在Suwannee河富里酸溶液中扑热息痛的光解行为  

PHOTODEGRADATION OF PARACETAMOL IN PRESENCE OF HUMIC SUBSTANCES

作　　者：高颖[1] 杨曦[1] 刘钰[1] 

机构地区：[1]南京大学环境学院,污染控制与资源化研究国家重点实验室,南京210093

出　　处：《环境化学》2008年第4期432-435,共4页Environmental Chemistry

基　　金：国家自然科学基金项目(50578074,20207004)

摘　　要：以中压汞灯为光源模拟阳光,研究了扑热息痛(ACT)在Suwannee河富里酸(SRFA)溶液中的光解行为,探讨了不同浓度的腐殖质、ACT、硝酸盐、碳酸盐、二价铁离子和pH值对ACT光解的影响,采用GC/MS技术鉴定了ACT的光解产物,并探讨其在腐殖质体系中可能的光解途径.结果表明,增加溶液中的腐殖质、硝酸盐、二价铁离子浓度和pH值能促进ACT的光解,而增加水体中的ACT和碳酸盐浓度则会抑制ACT的光解.The photodegradation of paracetamol （ACT） in the solution of Suwannee river fulvic acid （SRFA）was studied with a medium pressure mercury lamp as the simulated solar irradiation source. The effects of different concentrations of humic acid, ACT, nitrate, carbonate, Fe （ Ⅱ ） and pH value on the degradation kinetics of ACT was researched. The degradation products were identified with the GC/MS analysis. Possible degradation pathway of ACT in SRFA solution was promoted. The results revealed that, the degradation of ACT was promoted by increasing levels of humic acid, nitrate, Fe（ Ⅱ ）and pH value, while inhibited by increasing the initial concentration of ACT and the presence of carbonate ion in the solution.

关 键 词：扑热息痛 腐殖质 光解 活性氧自由基 

分 类 号：X132[环境科学与工程—环境科学]