"GB/T 29651-2013 Manganese ores and manganese concentrates, Determination of total iron content, flame atomic absorption spectroscopy (AAS) method" is the Chinese national standard, which stipulates the method of determining total iron content in manganese ores and manganese concentrates by flame atomic absorption spectroscopy (AAS). The standard applies to manganese ores and manganese concentrates, and the accurate measurement of flame atomic absorption spectroscopy (AAS) method can effectively analyze the total amount of iron in the sample. This method has the advantages of simple operation, high sensitivity and good accuracy, which provides a scientific basis for the mass detection and trade of manganese ore and related products, ensures the accurate determination of iron content in ore, and is of great significance to the rational utilization of manganese ore resources and related industrial production.