This part of GB/T20899 specifies the method for determining the amount of gold in gold ore. This section applies to the determination of gold content in gold ores.
GB/T 20899.1-2019 history
2019GB/T 20899.1-2019 Methods for chemical analysis of gold ores—Part 1:Determination of gold content
2007GB/T 20899.1-2007 Methods for chemical analysis of gold ores Part 1: Determination of gold contents