熔融制样-X荧光光谱法测定冶金石灰主次成分

Determination of Major and Minor Components in Metallurgical Lime with Fusion Sample Preparation-X-ray Fluorescent Spectrometry

采用熔融制样-X射线荧光光谱分析法测定冶金石灰中氧化钙、二氧化硅、氧化镁、磷、硫的含量。通过分析熔剂、脱模剂、稀释比、熔融时间、熔融温度等因素对测定结果的影响,确定了最佳实验条件,同时采用标准样品及自制合适含量的标准样品进行了各元素校准工作曲线的绘制,其相关系数均达到0.999以上。采用实验方法测定实验样品,结果表明各元素测定值与理论值满足允许差要求,精密度实验中各元素相对标准偏差均小于5%,具有较高的准确度及精密度。该方法在进行熔融样品制备时不需要灼烧减量的操作,大大简化了实验流程,有效提高了工作效率,具有一定的推广应用价值。

The contents of calcium oxide,silicon dioxide,magnesium oxide,phosphorus and sulfur in metallurgical lime are determined by means of fusion sample preparation-X-ray fluorescent spectrometry.The optimum experimental conditions are determined by analyzing the influences of such factors as fusing agent,release agent,dilution ratio,melting time and temperature on the determination results.Meanwhile,the calibration curves of each element are drawn with standard samples and self-made standard samples with appropriate contents as well as the correlation coefficients are all over 0.999.The experimental samples are determined with test methods.The results showed that the measured and theoretical values of each element could meet the requirements of tolerances as well as relative standard deviations of each element in precision experiment were all less than 5%,which was with higher accuracy and precision.The operation of loss on ignition is not needed for preparing fusion samples in this method so that the experimental processes are greatly simplified and work efficiency is effectively improved,which is with certain promotional and application values.