摘要
根据苯甲酸与水杨酸在酸性条件下荧光光谱出现的差异,用同步荧光法同时测定其混合物中二组份。苯甲酸及水杨酸的检测限分别为0.24μg/mL和0.25μg/mL,相对标准偏差分别为1.3%和1.2%。方法用于商品杀菌防腐剂中苯甲酸与水杨酸的同时测定,结果满意。,Xinxiang,453002)Abstract:Basedontheevidentdifference,offluoreseencespetracharacteristicsbetweenbenzoicacidandsalicylicacidin1.0mol/LaqueousH2SO4solution,anewmethodhasbeenestablishedforsimultaneousdeterminationofbenzoicacidandsalicylicacidinmixturesbysynchronousflourimetry.Thedetectionlimitsofbenzoicacidandsalicylicacidare:0.24μg/mLand0.25μg/mL,respectively.Therelativestandarddevi?
Based on the evident difference, of fluoreseence spetra characteristics between benzoic acid and salicylic acid in 1.0mol/L aqueous H2SO4 solution, a new method has been established for simultaneous determination of benzoic acid and salicylic acid in mixtures by synchronous flourimetry. The detection limits of benzoic acid and salicylic acid are: 0.24μg/mL and 0. 25μg/mL, respectively. The relative standard deviation are: 1.3% and 1.2%, respectively. The method has been successfully used to analyse benzoic acid and salicylic acid in commercial preser vative and bactericide simultaneously.
出处
《分析科学学报》
CAS
CSCD
1995年第1期29-32,共4页
Journal of Analytical Science
关键词
荧光法
苯甲酸
水杨酸
同时测定
Synchronous fluorimetry
Benzoic acid
Salicylic acid
Simultaneous determination