Chemical Stability and Compatibility - Yittrium count not stable
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admin
Total posts: 529
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Thanks for the information. |
Brian Alexander, PhD
Total posts: 18
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As your data are ratios, it's important to know exactly how the software is calcualting the Y count ratio. One approach would be for the software to compare the Y counts in a reference solution (often a blank or calibration standard) to the Y counts in the unknown (sample) solution. The data you present would be consistent with this approach, and would effectively represent instrument drift as the analytical run proceeds. A second internal standard approach is to normalize the counts for the element being measured to the Y counts in the same solution, i.e., the software divides the Ca counts (for example) in a given solution by the Y counts in the same solution. If you can determine how the software is calculating the Y count ratio, then it would be possible to diagnose the root cause of any trends you may be observing. |