对牙膏中各种氟化物分析方法的研究。
An investigation of methods proposed for the analysis of the various forms of fluoride in toothpaste.
作者信息
Cook W D
出版信息
Aust Dent J. 1981 Oct;26(5):299-303. doi: 10.1111/j.1834-7819.1981.tb05226.x.
Analytical methods for the determination of soluble fluoride, soluble fluorine and total fluorine derivatives in toothpaste were investigated. Potentiometric determinations of soluble fluoride in TISAB-toothpaste slurries were shown to be inaccurate. Based on recovery measurements, analyses for soluble fluoride and soluble fluorine derivatives in the supernatant liquid were found to be reliable provided the slurrying time was standardized. A gas chromatography method for the analysis of total fluorine, using the silane derivative fluoride, was compared with methods involving ashing and distillation prior to colorimetric or potentiometric analysis.
研究了测定牙膏中可溶性氟化物、可溶性氟和总氟衍生物的分析方法。结果表明，用离子强度调节剂（TISAB）-牙膏浆液电位法测定可溶性氟不准确。基于回收率测定，发现只要标准化制浆时间，上清液中可溶性氟化物和可溶性氟衍生物的分析结果就是可靠的。将一种使用硅烷衍生物氟化物分析总氟的气相色谱法，与比色或电位分析前涉及灰化和蒸馏的方法进行了比较。
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