Fluoride‐containing bioactive glasses and glass‐ceramics in the SiO₂‐P₂O₅‐CaO‐CaF₂ system are of great interest for dental applications, where the precipitation of fluorapatite supports tooth remineralization. Fluorine quantification in those glasses is key to estimate thermal properties and crystallization tendency. This work presents a study on fluorine determination by laser induced breakdown spectroscopy (LIBS) in four melt‐derived glass powders with varying P₂O₅ concentrations. LIBS enables fluorine quantification with a reduced analysis time, minimal to no sample preparation, and high spatial resolution. The fluorine calibration curve was obtained from CaF₂ and SiO₂ mixtures as reference samples, and the fluorine loss upon glass melting has been determined as a function of P₂O₅ content. The P₂O₅‐free glass shows the lowest fluorine loss (13%), with HF volatilization likely being responsible for the loss. By contrast, the glass with the highest P₂O₅ content (11.33 wt%) exhibits the largest fluorine loss (55%), owing to additional mechanisms involving the volatilization of phosphorus species like POF₃.

中文翻译：

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激光诱导击穿光谱法（LIBS）测定生物活性玻璃中的氟损失

SiO ₂ -P ₂ O ₅ -CaO-CaF ₂系统中的含氟生物活性玻璃和玻璃陶瓷对于牙科应用非常重要，因为氟磷灰石的沉淀有助于牙齿再矿化。这些玻璃中的氟定量是估算热性能和结晶趋势的关键。这项工作提出了一种通过激光诱导击穿光谱法（LIBS）测定四种不同P ₂ O ₅浓度的熔融玻璃粉末中氟的研究。LIBS能够以减少的分析时间，最少的样品制备甚至不需要样品制备以及高空间分辨率实现氟的定量。氟校准曲线是从CaF ₂获得的并且将SiO ₂混合物作为参考样品，并且已经确定了玻璃熔融时的氟损失是P ₂ O ₅含量的函数。不含P ₂ O _5的玻璃显示出最低的氟损失（13％），其中HF的挥发可能是造成损失的原因。相比之下，由于涉及POF ₃等磷物质挥发的其他机理，具有最高P ₂ O ₅含量（11.33 wt％）的玻璃表现出最大的氟损失（55％）。