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(-)).
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页码：601 / 604
页数：4
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