电位滴定法测定牙膏中的氟  

Determination of Fluorine in Toothpaste by Potentiometric Titration Method

作　　者：赖冬梅[1] 

机构地区：[1]成都理工大学,四川成都610059

出　　处：《四川有色金属》2004年第4期43-44,共2页Sichuan Nonferrous Metals

摘　　要：研究了氟的分析方法比色法、离子色谱法、离子选择电极法。进而建立了测定牙膏中氟的新方法,利用氟离子选择电极,根据电位突跃来判断终点的电位滴定法。回收率为95%～103%,相对标准偏差RSD为0.5%～1.3%。In this work,some analytical methods for determination of fluorine,such as colorimetric analysis,ion chromato graphy and ion-selective electrode analysis have been researched.A new method for determinating fluorine in toothpaste was established.It is a potentiometric titration method by use of the fluorine ion-selective electrode and the end-point of titration is judged according as potential jump.

关 键 词：牙膏 电位滴定法 新方法 终点 离子选择电极法 研究 回收率 氟离子选择电极 离子色谱法 测定 

分 类 号：TF713.3[冶金工程—钢铁冶金] TQ658.41[化学工程—精细化工]