摘要
本文研究了离子选择性电极法测定单氟磷酸钠型牙膏中的有效氟和总氟含量的方法。样品的水解时间、稀释度及水解酸度对测定结果均有极大影响。该法简便快速,变异系数1. 5~3．4%,回收率92．0~100．8%,与蒸馏——滴定法无显著性差异。
Abstract: The method for the determination of effective and total fluoride contents in toothpaste containing monofluoroposphate (MFP) by a ion-selective electrode is investigated. The time and acidity for hydrlysis of MFP and dilute degree of the pastes have great effect on the experimental results. This method is simple, precise and accurate with coefficient of variation 1.5-3.4% and the rate of recovery 92.0-100.8%. It is no significant differences with that of steam distillation-titrimetmetry.
出处
《日用化学工业》
CAS
CSCD
北大核心
1992年第3期37-40,共4页
China Surfactant Detergent & Cosmetics
