A novel chemiluminescent method for the determination of salicylic acid in bactericidal solutions

被引：13

作者：

Cui, H ^{[1
]}

Li, SF ^{[1
]}

Li, F ^{[1
]}

Sun, YG ^{[1
]}

Lin, XQ ^{[1
]}

机构：

[1] Univ Sci & Technol China, Dept Chem, Hefei 230026, Anhui, Peoples R China

来源：

ANALYTICAL AND BIOANALYTICAL CHEMISTRY | 2002年 / 372卷 / 04期

基金：

中国国家自然科学基金;

关键词：

FIA; chemiluminescence; cerium(IV); salicylic acid; Tween; 20;

D O I：

10.1007/s00216-001-1124-7

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

A new flow-injection procedure has been developed for the determination of salicylic acid based on the enhancement of the chemiluminescence from the cerium(IV)-Tween 20 reaction by salicylic acid in acidic medium. The method is simple, selective and sensitive with a detection limit of 2.5x10(-9) g mL(-1). It is applicable to the determination of salicylic acid in the concentration range of 4.0x10(-9)-1.1x10(-6) g mL(-1). The relative standard deviation (RSD) is 0.85% for 4.0x10(-7) g mL(-1) salicylic acid (n=11). The method has been successfully applied to the determination of salicylic acid in bactericidal solutions. Furthermore, it is suggested that light emission from cerium(IV)-Tween 20 reaction is probably because of the formation of singlet oxygen O-1(2)* and the emitter is excited oxygen molecular pairs O-2((1)Delta(g))O-2((1)Sigmag(-)).

引用

页码：601 / 604

页数：4

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