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Multidimensional chromatographic fingerprinting combined with chemometrics for the identification of regulated plants in suspicious plant food supplements
for shifts in retention times using correlation optimized warping), partial least squares – discriminant analysis was applied to construct classification models. Two approaches for modelling were ...
Development of a sample preparation method for the GC-analysis of e-cigarette refill liquids
components. The e-liquid was dissolved in water, to shift the equilibrium of the target components towards the headspace and to enhance the retention of the matrix components. The optimal headspace temperature ...
Analysis of chlormequat residue in milk by UPLC-MS/MS
injection on an UPLC- MS / MS system (Waters premier). Due to his ionic characteristic, no retention is observed on classical C18 column. The reverse phase polymethacrylate Shodex RS pak DE413 (150 × 4.6 mm) ...
A proteomics approach for the quantification of Staphylococcus aureus enterotoxins a and b in several matrices using uplc-msms analysis.
endogenous tryptic peptides and show the same chemical behavior as the endogenous peptides. Both the endogenous peptide and its respective IS should elute from the column at the same retention time, assuring ...
Identification of potential migrants from printing inks used on paper and board food contact materials
substances can be used. One approach is to focus on pre-selected target analytes, with known fragmentation patterns and retention times. In the presented work, a screening method for more then 120 analytes was ...