采用能量色散X荧光光谱法测定煤灰成分,与化学分析法相比较则所需的设备相对简单且快速测得结果、操作更简单及更为经济有效。介绍采用能量色散(EDXRF)测定国能神优煤灰中多种灰成分的方法,针对灰样制备过程、基体效应、能谱模式等试验条件进行探讨,并通过多个煤灰标准样品进行核验,指出灰样制备过程采用研磨通过0.1mm标准筛后于(815±10)℃灼烧1h的标准方法进行,基体效应采用多元线性回归去除灰成分中硅与铝、磷与钙、钾与钙、铁钛钙间4种元素相互干扰情况,选择80kcps-480s能谱模式可通过多个煤灰标准样品检测,其结果与认定值的误差均在不确定度要求的范围内,数据准确,能够适用于目前实验室快速测定煤灰成分的要求。

The determination of coal ash composition using energy - dispersive X - ray fluorescence spectrometry(EDXRF) is compared with the chemical analysis method, which requires relatively simple equipment and can obtainresults quickly, with simpler operation and greater economic efficiency. This paper introduces the method of determi⁃ning multiple ash components in Guoneng Shenyou coal ash using EDXRF. The experimental conditions such as thepreparation process of the ash sample, matrix effect, and energy spectrum mode are discussed. The method is veri⁃fied by multiple coal ash standard samples. It is pointed out that the preparation process of the ash sample should becarried out by grinding through a 0. 1mm standard sieve and calcining at (815±10)℃ for 1 hour. The matrix effectis removed by multiple linear regression to eliminate the interference between silicon and aluminum, phosphorus andcalcium, potassium and calcium, and iron, titanium, and calcium in the ash components. The energy spectrummode of 80 kcps-480 s can be detected through multiple coal ash standard samples, and the results are within therange of uncertainty requirements compared to the recognized values. The data is accurate and can meet the currentlaboratory’ s requirements for rapid determination of coal ash components.