Method for measuring iron content in titanium alloy

The invention relates to the technical field of metal iron detection, in particular to a method for determining the iron content in a titanium alloy. The method can conveniently detect the iron content, is low in cost, and comprises the following steps of (1) weighing 0.1 g of sample, putting into a 100mL steel dual-purpose bottle, adding 10mL of sulfuric acid, heating with soft fire until the sample is completely dissolved, cooling, adding 10mL of boric acid, diluting with water to a scale, and shaking up; (2) taking six 100mL volumetric flasks, respectively adding 10mL of the sample solution, then sequentially and accurately adding an iron calibration solution, respectively adding 30mL of water, 10mL of a hydroxylamine hydrochloride solution, 5mL of an ammonium citrate solution, 25mL ofan ammonium acetate solution and 1, 10-diazaphenanthrene, adding water to dilute to a scale, shaking up every time when one solution is added, and standing for 20-30 minutes for color development; (3)taking water as a referen