微波灼烧-X射线荧光光谱法测定还原铁中5种成分

介绍了微波快速灼烧技术在X射线荧光光谱法分析还原铁中5种成分的应用。实验表明:采用微波灼烧技术对还原铁样品进行预氧化，还原铁样品烧损值近－30%时，相对标准偏差小于0.15%; 采用X射线荧光光谱法对微波灼烧后的还原铁样品进行测定，当TFe、SiO₂、CaO、P₂O₅、Al₂O₃含量分别为89.96%、2.29%、0.11%、0.16%、0.78%时，其相对标准偏差分别为0.20%、4.1%、1.6%、1.4%、5.0%；还原铁样品的TFe含量在80％以上时，其测定结果的允许差在±0.5%以内，其它成分的X射线荧光光谱法分析结果与化学湿法分析结果也相符。

Detemination of five components in reduction iron by X-ray fluorescence spectrometry with microwave ignition

The application of microwave ignition technology in the determination of reduction iron by X-ray fluorescence spectrometry was introduced in the paper.The experiment indicated that the ignition loss of reduction iron sample was almost-30% with relative standard deviation less than 0.15% when microwave ignition technology was used to pre-oxidize reduction iron sample.X-ray fluorescence spectrometry was applied in the determination of reduction iron sample which was pretreated with microwave ignition technology.The results of TFe,SiO2,CaO,P2O5 and Al2O3 were 89.96%,2.29%,0.11%,0.16% and 0.78% respectively,and the relative standard deviation were 0.20%,4.1%,1.6%,1.4% and 5.0%,respectively.When TFe content of the reduced iron sample was higher than 80%,the relative error of determination result was within ±0.5%.For other components,the determination results of proposed method were also consistent with those of wet chemical analysis.