摘要
水杨酸 (SA)、2 ,5 二羟基苯甲酸 (GA)和对 氨基苯甲酸 (PABA)的荧光光谱相互重叠。用交替三线性分解二阶校正法对PABA共存下的SA和GA进行了同时荧光测定 ,SA和GA的回收率分别为 (1 0 1 2± 1 9) %和 (97 1 6±1 0 4 ) %。
The fluorescence spectra of salicylic acid and gentisic acid and p-aminobenzoic acid were strongly overlapped, which did not permit their direct determination without previous separation by conventional methods. In this paper, a method was proposed for simultaneous determination of salicylic acid and gentisic acid in the presence of p-aminobenzoic acid by using both excitation-emission fluorescence and second-order calibration based on alternating trilinear decomposition method. The average recoveries of salicylic acid and gentisic acid were (101.2±1.9)% and (97.16±1.04)%, respectively.
出处
《分析试验室》
CAS
CSCD
北大核心
2002年第2期44-47,共4页
Chinese Journal of Analysis Laboratory
基金
国家自然科学基金 (2 9975 0 0 7)
厦门大学现代分析科学教育部重点实验室课题基金资助
关键词
交替三线性分解算法
同时测定
2
5-二羟基苯甲酸
水杨酸
Excitation-emission fluorescence
Alternating trilinear decomposition
Second-order calibration
Salicylic acid
