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Measurement and Results - Certification and validation of reference materials
How do we know that the tested (certified) elements are really the ones present in the standards? And how are the concentrations tested?
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admin
Total posts: 529
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The presence of the certified elements is verified using validated spectroscopic methods, which generally are ICP techniques. The concentrations are certified using gravimetric preparations from certified reference materials, and these concentrations are subsequently verified using the validated ICP methods. |