Analysis of Cu and Zn in brass alloy by using ICP-OES, AAS, SEM techniques

Abstract

The objective of this study was to analyze brass alloy and perform a single laboratory evaluation of all techniques to see if these methods can obtain reliable results compared to the certified values for each element. Samples of brass alloy were analyzed to determine the concentration of elements such as Cu and Zn. Sample was weighted (10 mg) and then was dissolved in 1 ml of aqua regia (3 HCl: 1 HNO3) and left for 24 hours until complete dissolution then transferred into a 100 ml voltumetric flask and made up with ultrapure Millipore H2O to produce different types of concentrations. Clearly, has been found that the calibration curves for each element of brass sample is extremely linear (R2 = 0.999) by using different techniques. In addition, the ICP-OES can give a more reliable result than other methods.