环铂金电极-自动电位滴定法测定氧化型染发剂中过氧化氢的含量  

Determination of Hydrogen Peroxide in Oxidized Hair Dyes by Cyclic Platinum Electrode-Automatic Potentiometric Titration

作　　者：张仕云 谢静 刘凡 张子豪 ZHANG Shiyun;XIE Jing;LIU Fan;ZHANG Zihao(Guangzhou Customs District Technology Center,Guangzhou 510623,Guangdong,China)

机构地区：[1]广州海关技术中心,广东广州510623

出　　处：《香料香精化妆品》2025年第1期156-160,共5页Flavour Fragrance Cosmetics

摘　　要：对硫酸溶液比例、滴定速度、阈值、测量电位进行了优化,建立了环铂金电极-自动电位滴定法测定氧化型染发剂中过氧化氢含量的方法。优化后,染发剂中过氧化氢测试加标回收率为98.9%~100.5%,平均回收率为99.84%。称样量为2 g时,方法检出限为48μg/g,相对标准偏差(RSD,n=8)≤0.45%。方法操作简便,准确可靠,高效快速,可用于进出口染发剂样品中过氢化氢含量的检测。The proportion of sulfuric acid solution,titration rate,threshold value and measuring potential time were optimized to establish a method for the determination of hydrogen peroxide in oxidized hair dyes by cyclic platinum electrode-automatic potentiometric titration.Under the optimized conditions,the spiked recoveries of hydrogen peroxide in hair dyes ranged from 98.9%to 100.5%,and the average recovery was 99.84%.The detection limit of the method was 48μg/g with the relative standard deviation(RSD,n=8)≤0.45%at the sample mass of 2 g.The method is simple,accurate,reliable,efficient and rapid,and can be used for the determination of hydrogen peroxide in import and export hair dye samples.

关 键 词：过氧化氢 染发剂 自动电位滴定法 检测 

分 类 号：TQ658.34[化学工程—精细化工] O657.1[理学—分析化学]