CHM 4354 Study Guide - Chalcopyrite, Standard Solution, Final Solution
Document Summary
Elemental analysis of minerals by inductively coupled plasma. Inductively couple plasma optical emission (icp-oes) and mass spectrometry (icp-ms) are continuously used for instrumental analysis. Here we attempt to undergo analysis of chalcopyrite (cufes2), pyrite (fes2), and a mineral mixture to determine their compositions using the icp. Portions of varying quantities are made for each of the three analytes of interest: 15 different mineral mixture samples, 4 different chalcopyrite samples, and 4 different. Icp takes the measured intensity, of the ejected photons from the excited analytes as they go to ground state, and calculates the concentration of the analyte present. Difference in response of the two elements to instrumental parameters such as rf power, nebulizer flow, and potential spectral interferences were also analyzed. %chalcopyrite composition in the mineral mixture was found to be: 3. 0mg portions (24. 43%), 10. 0mg portions (29. 67%), and 50mg portions (27. 52%). Variance increases as the inverse of the sample mass increases.
