GB/T 6730.58-2017 Determination of vanadium content in focused iron ore. The standard adopts flame atomic absorption spectroscopy (AAS) method, which is suitable for natural iron ore, iron concentrate, etc. It specifies the reagents, instruments and equipment required for the experiment, and details the preparation and analysis steps of the sample, including weighing, dissolve, bandwidth evaluation, etc. The determination range (mass fraction) is accurately divided, which can meet the detection needs of different content of vanadium, providing a reliable and unified method for the determination of vanadium content in iron ore, and helping to control the mass of iron ore.