GB/T 6730.14-1986 Introduces the determination of calcium and mg in iron ore by Atomic absirption spectrometer-tometry, AAS. This standard is based on the absorption characteristics of calcium and mg for specific wavelengths of light. Detailed equipment requirements for atomic absorption spectrophotometer. Standardize the collection and preparation of iron ore samples, including pulverization, acid dissolution and other steps. Describe the test process, from instrument preheating, calibrating, to wavelength selection and data reading. According to this standard, the calcium and mg content in iron ore can be accurately determined, providing key data for evaluating iron ore mass, guiding steel production and other related processes, and helping the industry control product quality.