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RSS FeedsMolecules, Vol. 26, Pages 7035: Being Uncertain in Chromatographic Calibration—Some Unobvious Details in Experimental Design (Molecules)

 
 

21 november 2021 13:20:04

 
Molecules, Vol. 26, Pages 7035: Being Uncertain in Chromatographic Calibration—Some Unobvious Details in Experimental Design (Molecules)
 


This is an introductory tutorial and review about the uncertainty problem in chromatographic calibration. It emphasizes some unobvious, but important details influencing errors in the calibration curve estimation, uncertainty in prediction, as well as the connections and dependences between them, all from various perspectives of uncertainty measurement. Nonuniform D-optimal designs coming from Fedorov theorem are computed and presented. As an example, all possible designs of 24 calibration samples (3–8, 4–6, 6–4, 8–3 and 12–2, both uniform and D-optimal) are compared in context of many optimality criteria. It can be concluded that there are only two independent (orthogonal, but slightly complex) trends in optimality of these designs. The conclusions are important, as the uniform designs with many concentrations are not the best choices, contrary to some intuitive perception. Nonuniform designs are visibly better alternative in most calibration cases.


 
61 viewsCategory: Biochemistry, Chemistry, Molecular Biology
 
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