X射线荧光光谱法测定铁基合金中合金组分的通用工作曲线的制作——基本参数(FP)法虚拟合成标准样品的应用  

Preparation of Universal Working Curves Used in XRFS Determination of Alloying Elements in Fe-Based Alloy——Application of FP-Virtual Synthetic Standard Sample

作　　者：唐侠 葛颖新[2] 张庸 

机构地区：[1]沈阳黎明发动机公司技术中心,沈阳110043 [2]沈阳产品质量监督检验院,沈阳110022

出　　处：《理化检验（化学分册）》2015年第5期680-685,共6页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

摘　　要：应用基本参数(FP)法虚拟合成标准样品制作了X射线荧光光谱法测定不同类型的铁基合金中的26种元素的通用工作曲线。选择最佳的仪器工作条件和合理的待测元素的分析线系,测定了9种元素、受共存元素重叠干扰的校正系数,用瑞利散射线扣除背景及通道材料的影响。在设定虚拟合成标准样品中各元素的含量,并算得在此设定值下的理论荧光强度后,用FP法计算各元素在其定值下的最终强度,从而完成了FP法工作曲线。应用此虚拟合成单标工作曲线对多种标准样品进行测定,证明该工作曲线可用于各种类型的铁基合金的分析。The FP-virtual synthetic standard sample was applied to the preparation of universal working curves used in XRFS determination of 26 elements in a variety of Fe-based alloys. Optimum working conditions of the instrument and rational analytical spectral lines of the elements determined were chosen in the study. Correction coefficients of spectral overlapping of 9 elements with their coexisting elements were determined, and interferences caused by background and channel materials were eliminated by the Rayleigh scattering. After supposition of the contents of the alloying elements of the virtual synthetic standard sample and calculated values of their fluorescence intensity, their final fluorescence intensity were calculated by the algorithm of FP and the FP working curves were obtained finally. The working curves of virtual synthetic standard sample were used in analysis of varieties of standard samples. It was proved that the FP working curves were feasible to be used universally in the XRFS analysis of varieties of Fe-based alloys.

关 键 词：X射线荧光光谱法 铁基合金 基本参数法 虚拟合成标准样品 

分 类 号：O657.34[理学—分析化学]