GB/T 8151.18-2012 Determination of zinc content in zinc concentrates by ion exchange-Na ² EDTA Titrimetric method, which is suitable for all kinds of zinc concentrates. Sample Handling of zinc concentrates is first formed into a solution, and zinc ions are separated from Miscellaneous interference ions through an ion exchange column, and then the zinc ions in the Strong acid type ion exchanger through the exchange column are titrated with Na ² EDTA standard solution. The standard specifies the requirements of ion exchange column and other equipment and Burette, and specifies the preparation of reagents. Detail the steps of Sample Handling, including sample dissolve and ion exchange operation points. Standardize the titration operation process, according to this standard, the amount of zinc can be accurately determined, providing key data support for zinc concentrate mass evaluation and subsequent processing technology.