阻抑鸡冠花红褪色动力学光度法测定痕量苯酚  

Kinetic Spectrophotometric Determination of Trace Phenol Based on Inhibitory Reaction of Amaranth

作　　者：李艳霞[1] 谢东坡[1] 庄鹏飞[1] 

机构地区：[1]周口师范学院化学系

出　　处：《光谱实验室》2010年第3期1226-1229,共4页Chinese Journal of Spectroscopy Laboratory

基　　金：河南省教育厅自然科学基金资助项目(2008B150024);周口师范学院青年科研基金资助项目(zknuqn200826)

摘　　要：在稀H2SO4介质中,痕量苯酚对KBrO3氧化鸡冠花红褪色反应有很强的阻抑作用。据此建立了阻抑动力学光度法测定痕量苯酚的新方法。在最佳条件下,方法的线性范围是0.0008-0.06μg/mL,检出限为2.97×10-10g/mL。In dilute sulfuric acid medium,trace phenol showed strong inhibition catalytic effect onthe oxidation reaction between amaranth and potassium bromate.Based on these phenomenon,a newkinetic spectrophotometric method of determination of trace amounts of phenol was established.Thedetection limit and the linear range of phenol are 2.97×10-10g/mL and 0.0008-0.06μg/mL,respectively.

关 键 词：苯酚 鸡冠花红 阻抑催化反应 动力学光度法 

分 类 号：O657.32[理学—分析化学]