GB/T 3884.7-2012 《Methods for chemical analysis of copper concentrates - Part 7: Determination of lead content - Na2EDTA titration method》 Related products

This standard specifies the method for the determination of lead content in copper concentrates, which is applicable to samples with lead content in the range of 5.00% to 13.00%. During the determination process, the sample is first dissolved with nitric acid and sulfuric acid, and the lead is settled in the form of lead sulfate, so as to separate from Miscellaneous interfering elements. After settling, the lead is dissolved with acetic acid-Sodiumacetate buffer solution, and with xylenol orange as the indicator, it is titrated with Na2EDTA standard titration solution to determine the content of lead. The required reagents and the preparation method of the solution are listed in detail in the standard, which ensures the accuracy and Repeatability of the determination.