摘要
硅灰石矿物作为一种常用的化工原料,经常需要测定其各个主次成分的含量。使用玻璃熔片-X射线荧光光谱法同时对硅灰石的CaO、SiO_(2)、TFe_(2)O_(3)、Al_(2)O_(3)、MgO、K_(2)O、Na_(2)O、MnO、TiO_(2)、P_(2)O_(5)进行分析,熔融法制样可以消除试样的粒度效应和矿物效应。在常用的四硼酸锂+偏硼酸锂混合熔剂中加入少量氟化锂后,熔体流动性更好,熔样时间和温度相应减少,脱模剂用量更少。标准曲线通过理论α系数校正方法校正。分析结果表明:各成分含量在标准工作曲线中标准样品的含量范围内时,测定结果和化学、ICP-MS方法测定结果相符。在方法的精密度实验中,主成分CaO、SiO_(2)的含量相对标准偏差为0.21%~0.24%;其他低含量成分相对标准偏差为0.55%~4.64%。
For wollastonite is a common chemical raw material,it is often necessary to analyze the content of its main and secondary components.In this paper,CaO,SiO_(2),TFe_(2)O_(3),Al_(2)O_(3),MgO,K_(2)O,Na_(2)O,MnO,TiO_(2),P_(2)O_(5) contents of wollastonite are analyzed with glass melt-X-ray fluorescence spectroscopy,and the molten sample treatment method can eliminate the particle size effect and mineral effect of the sample.After a small amount of lithium fluoride is added to the commonly used lithium tetraborate-biased lithium boric acid mixture flux,the melt fluidity is better,the melting time and temperature are reduced accordingly,and the amount of release agent is less.The analysis error can be effectively reduced.The standard curve is checked by the theoreticalαcoefficient correction method.The analysis result shows that when the content of each component is within the range of the standard sample in the standard working curve,the analysis results are consistent with those of the chemistry and ICP-MS methods.In the precision experiment of the method,the relative standard deviation of the main component contents of CaO and SiO_(2) is in the range of 0.21%-0.24%.The relative standard deviation of other low component contents is in the range of 0.55%-4.64%.
作者
黄治榕
唐碧玉
田松
HUANG Zhirong;TANG Biyu;TIAN Song(China Nonferrous Metals(Guilin)Geology and Mining Co.,Ltd.,Guilin 541004,Guangxi,China)
出处
《矿产与地质》
2022年第3期681-684,共4页
Mineral Resources and Geology
基金
广西科学研究与技术开发计划项目(桂科AD20325011)资助。
关键词
X射线荧光光谱法
硅灰石
混合熔剂
X-ray fluorescence spectrometry
wollastonite
mixed flux
