GB/T 6730.55-2004 For the determination of tin content in iron ore, the flame atomic absorption spectroscopy (AAS) method is used. The iron ore sample is pretreated to convert the tin element into a solution state. The tin atomization is achieved with the help of the Flame atomization device, and the absorption degree of tin atoms to specific wavelengths of light is determined by the light spectrum instrument, which is called Absorbance. By establishing a standard Linedispersion, the tin content in iron ore is accurately calculated based on Absorbance. This standard provides a key technology for the mass detection of iron ore, which helps to evaluate the quality of the ore. It is widely used in related industries such as iron ore mining, processing and steel production.