GB/T 20255.6-2008 specifies the general requirements of flame atomic absorption spectroscopy (AAS) method in chemical analysis of cemented carbide. This standard specifies the scope of application of flame atomic absorption spectroscopy (AAS) method for cemented carbide analysis, and regulates the collection, preparation and preservation of samples to ensure that the samples can represent the overall characteristics. Detail the selection, calibrating and maintenance points of the instrument to ensure the accuracy of measurement. At the same time standardize the measurement environmental conditions, such as temperature, humidity, etc., and also provide data processing and result representation methods. Provide a unified standard for the determination of cemented carbide composition by flame atomic absorption spectroscopy (AAS), which helps to improve the standardization and reliability of detection.