有关磷矿石中全磷及有效磷的定量分析多采用化学法。地质部门通常采用光谱比较法进行磷的半定量测定。由于五氧化二磷在碳弧小穴电极中蒸发的分馏现象严重,受组分变化的影响也大,分析结果重现性和准确度差。因此,矿物中五氧化二磷的光谱定量方法国内至今未见报导。 Phosphate rock phosphate and phosphorus in the quantitative analysis of the use of more chemical methods. Geological departments usually use spectral comparison method for semi-quantitative determination of phosphorus. Due to the serious fractionation of phosphorus pentoxide by evaporation in the carbon arc cavity electrode, it is also greatly affected by the change of composition, and the analysis results are poor in reproducibility and accuracy. Therefore, the spectrometry method of phosphorus pentoxide in mineral has not been reported in China so far.