流动注射化学发光测定水杨酸  

Determination of salicylic acid by a new flow injection chemiluminescence method

作　　者：谢成根[1] 李淮芬[1] 

机构地区：[1]皖西学院化学系,六安237012

出　　处：《分析试验室》2004年第7期61-62,共2页Chinese Journal of Analysis Laboratory

摘　　要：基于在甲醛存在下 ,水杨酸与KMnO4在酸性介质中直接化学发光反应 ,建立了测定水杨酸的流动注射化学发光的方法 ,该法测定水杨酸的线性范围为5 .0× 1 0 -7～ 1 .0× 1 0 -3 mol L ,检出限为 3.0× 1 0 -7mol L ,相对标准偏差为 2 0 %(水杨酸 5 .0× 1 0 -5mol L ,n =1 1 )。该法已应用于脚癣药水中水杨酸的测定。Chemiluminescence reaction of salicylic acid with potassium permanganate in the presence of formaldehyde as enhancer was investigated. A new chemiluminescence method for determination of salicylic acid with flow injection technique was developed. The linear range for salicylic acid was 5.0×10^(-7)～1.0×10^(-3) mol/L with a detection limit of 3.0×10^(-7) mol/L. The relative standard deviation was 2.0% for 5.0×10^(-5) mol/L salicylic acid in 11 repeated measurements. The method was used to determine the content of salicylic acid in liquid medicine with satisfactory results.

关 键 词：化学发光 KMNO4 水杨酸 甲醛 

分 类 号：O657.32[理学—分析化学]