采用盐酸-氢氟酸-硝酸混酸溶解样品,通过溶样酸的选择、共存离子对铁的干扰、仪器工作条件选择及精密度、准确度试验等一系列条件试验,建立钛及钛合金中铁的原子吸收光谱(FAAS)测定方法,并与其他方法(1,10-二氮杂菲分光光度法、ICP-AES法)进行了数据对比试验。实验结果表明:该方法分析速度快,具有较高的准确度与精密度,通过对TC6(0.443%)与TC10(0.706%)标样中的铁分别进行多次测定,RSD为0.1%,加料回收率为97%～101%。 Hydrochloric acid-hydrofluoric acid-nitric acid mixed acid was used to dissolve the sample. A series of conditions tests such as the choice of acid to be dissolved, the interference of coexisting ions to iron, the working condition of the instrument, precision and accuracy test, Atomic Absorption Spectrometry (FAAS) determination method, and with other methods (1,10 - phenanthroline spectrophotometry, ICP-AES method) data comparison test. The experimental results show that the method has the advantages of fast analysis, high accuracy and precision. The iron content in TC6 (0.443%) and TC10 (0.706%) samples were determined several times with RSD of 0.1% The recovery rate was 97% ~ 101%.