GB/T 20255.1-2006 Determination of calcium, potassium, mg and sodium in cemented carbide by flame atomic absorption spectroscopy (AAS). The standard details the Sample Handling steps to dissolve the target element into the solution. The element is atomized by a Flame atomization device, and the light spectrum meter measures its absorption of specific wavelengths of light (Absorbance). According to the respective standard Linear dispersion, the content of each element is accurately calculated by Absorbance. From sample preparation to result calculation, every step is strictly regulated. This standard provides a key basis for the quality control of cemented carbide, helps to optimize the production process, and is widely used in cemented carbide production, testing and other related fields.