This standard specifies the determination methods for silver, copper, iron, lead, antimony and bismuth in gold. The gold content was determined by impurity reduction method. This standard applies to the simultaneous determination of silver, copper, iron, lead, antimony and bismuth in pure gold (99.95% to 99.99%). The measurement range is shown in Table 1.
GB/T 11066.5-1989 history
2008GB/T 11066.5-2008 Methods for chemical analysis of gold.Determination of silver, copper, iron, lead , antimony and bismuth contents.Atomic emission spectrometry
1989GB/T 11066.5-1989 Gold--Determination of silver, copper, lead, and bismuth contents--Emission spectrographic method