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首页> 外文期刊>Eurasian Journal of Analytical Chemistry >New Approach for the Determination of Fluorine in Glass
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New Approach for the Determination of Fluorine in Glass

机译：测定玻璃中氟的新方法

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摘要

The properties of glass critically depend on glass composition. Apart from silica, calcium and aluminium; fluorine is also an essential constituent of the glass, since it enhances several properties of glass. In view of the increasing use of fluorine in glasses, it is necessary to have a rapid, accurate and cost effective method for the determination of fluorine in glass. Keeping the above facts a simple and rapid method has been developed for the quantitative estimation of fluorine in glass materials. The method proposed is based on extraction of fluorine from the glass sample by decomposing the glass sample with fusion mixture of sodium carbonate and zinc oxide. The fluorine is extracted with distilled water and is determined by using lanthanum chloride as titrant. The accuracy of the method has been established by analyzing five replicates of Standard Reference Material of NBS 91 and four different glass samples. The standard deviation has been calculated by analyzing five replicates of each glass sample and reference material by the method proposed. The method proposed is reproducible and the standard deviation in the determination of five replicates is found to 1.3%.
机译：玻璃的性能主要取决于玻璃的组成。除二氧化硅，钙和铝外;氟也是玻璃的基本成分，因为它增强了玻璃的多种性能。鉴于玻璃中氟的使用日益增加，有必要提供一种快速，准确和经济有效的方法来测定玻璃中的氟。保持上述事实，已经开发出一种简单而快速的方法来定量估计玻璃材料中的氟。提出的方法基于通过用碳酸钠和氧化锌的熔融混合物分解玻璃样品从玻璃样品中提取氟。用蒸馏水萃取氟，并使用氯化镧作为滴定剂进行测定。通过分析NBS 91标准参考物质的五个重复样品和四个不同的玻璃样品，可以确定该方法的准确性。通过采用建议的方法分析每个玻璃样品和参考材料的五个重复样品，可以计算出标准偏差。所提出的方法是可重现的，发现五个重复样品的标准偏差小于1.3％。

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