面粉中过氧化苯甲酰和苯甲酸同时测定的导数—比导数紫外分光光度法  

Derivative Ratio Derivative Ultraviolet Spectrophotometry for Simultaneous Determination of Benzoyl Peroxide and Benzoic Acid in Flour

作　　者：丁静[1] 陈小全[1] 任少红[1] 

机构地区：[1]泰山医学院化学与化学工程学院,山东省泰安市271000

出　　处：《职业与健康》2008年第9期841-843,共3页Occupation and Health

摘　　要：用导数—比导数紫外分光光度法同时测定面粉中过氧化苯甲酰和苯甲酸的含量,不需要样品的复杂处理,操作简单。测定的回收率及精密度均较高,二者的浓度范围分别在0～13和0～9mg/L之内,符合线性关系,回归相关系数r均达到0.999以上,该法测定结果可靠、准确。Derivative ratio derivative ultraviolet spectrophotometry is simple to operate in the simultaneous determination of benzoyl peroxide and benzoic acid in flour. The recovery rate and accuracy of the determination high, the concentration range of them were 0 - 13mg/L and 0 - 9mg/L respectively, it accorded with the linear correlations, the regression correlative coefficient r was above 0.999. This method was reliable and accurate.

关 键 词：导数-比导数光谱 面粉 过氧化苯甲酰 苯甲酸 

分 类 号：R115[医药卫生—公共卫生与预防医学]