GB/T 24230-2009 The Titrimetric method is used to determine the chromium content in chromium ores and chromium concentrates. It is suitable for all kinds of chromium ores and chromium concentrate samples. After the Sample Handling, the chromium element is in a titratable state, and the chromium content is calculated according to the amount of the titrant by reacting with a specific titrant. The standard specifies the requirements of Burette and other instruments, and specifies the preparation of reagents. Detailed description of Sample Handling steps, covering the analysis of ores and concentrates, and the elimination of interference elements. Standardized titration operation process, including titration speed control and end point judgment. According to this standard, the chromium content can be accurately determined, providing key data for chromium ore resource evaluation and metallurgical industry production, and helping related industries to control and process optimization.