目的：建立一种测定右旋糖酐铁片、右旋糖酐铁分散片中铁含量的X射线荧光光谱法。方法：采用能量色散型X射线荧光光谱法测定10批次右旋糖酐铁片、右旋糖酐铁分散片中铁元素含量。元素分析谱线为Fe KA，测量电压为20 kV，电流为254 μA，介质为空气，测量体积为10 mL，测试时间为200 s。结果：铁元素计数率的比值在5~100 μg·mL^-1浓度范围内存在良好线性关系（R²>0.9999），平均回收率为100.65%，检出限为0.358 μg·mL^-1，定量限为1.19 μg·mL^-1。测定了3个厂家共10批样品，结果均在99.0%~100.5%，和原标准使用的方法（直接滴定法或原子吸收法）测定结果比较，无显著性差异。结论：本方法操作简便，精密度高，准确可靠，可用于快速测定右旋糖酐铁片、右旋糖酐铁分散片中铁的含量。

Objective： To establish a method for determination of the content of iron in iron dextran tablets and iron pextran dispersible tablets by X-ray fluorescence spectrometry. Methods： The content of iron in 10 batches of iron dextran tablets and iron dextan dispersible tablets was determined by energy dispersive X-ray fluorescence spectrometry. The spectrum of elemental analysis are Fe KA. The voltage is 20 kV， the current is 254 μA， the medium is air， the measured volume is 10 mL， and the measured time is 200 s. Results： The ratio of iron element counting has a good linearity （R²>0.9999）in the concentration ranged of 5 to 100 μg·mL^-1. The average recoveries was 100.65%. The limit of detection was 0.358 μg·mL^-1， and the limit of quantitation was 1.19 μg·mL^-1. The contents of 10 batches of samples from three pharmaceutical factories were determined， all ranging from 99.0% to 100.5%. Compared with the results obtained by the methods specified in the original standard （direct titration method or atomic absorption method）， no significant difference was observed. Conclusion： This method is simple，accurate， and reliable， which could be utilized for the rapid determination of the content of iron in iron dextran tablets and dispersion tablets.