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Zoekresultaten - 35 results
Sample preparation methods for elemental analysis in electronic cigarette aerosols: a critical review
selected, a wide variability in sample preparation was observed, specifically variations in aerosol generation characteristics and collection techniques. Despite the widespread use of methods as filters and ...
Chromatographic fingerprint development for the detection of tobacco varieties in commercial tobacco products
(UHPLC) with diode-array detection (DAD). Additionally, the study examined whether this method could be transferred to a UHPLC-system with mass spectrometry as the detection technique. Method: During method ...
Evaluating MIR and NIR Spectroscopy Coupled with Multivariate Analysis for Detection and Quantification of Additives in Tobacco Products.
Abstract: The detection and quantification of additives in tobacco products are critical for ensuring consumer safety and compliance with regulatory standards. Traditional analytical techniques, like gas ...
Validation of an animal-free analytical method for the detection of bacterial endotoxins in human vaccines
assays are suitable for all vaccines tested, although the most appropriate technique of endotoxins quantification depends on the type of vaccine. Health Topics: Effectiveness and safety of vaccines, ...
Spectroscopic approaches for conformity analysis of e-liquids
modelling. Next to baseline correction, classical preprocessing techniques like standard normal variate (SNV), derivatives and scaling were explored. In a first step, supervised modelling, using partial least ...
Praktijkrichtlijn voor het opzetten van een kwaliteitssysteem in de erkende laboratoria voor pathologische anatomie werkzaam binnen het kader van het Erkenningsbesluit
opzetten van een kwaliteitshandboek in de erkende laboratoria voor klinische biologie werkzaam binnen het kader van het Erkenningsbesluit (versie 3:2017)Le “Guide technique d’accréditation en anatomie et ...
Analysis of illegal peptide drugs via HILIC-DAD-MS.
been developed to detect and quantify these peptides. The emerging of more polar peptides however requires the introduction of other separation techniques. Therefore, we set out to develop and validate ...
Chemometrics and chromatographic fingerprints to classify plant food supplements according to the content of regulated plants.
targeted plants and chemometric classification techniques in order to extract the important information from the fingerprints and determine the presence of the targeted plants in plant food supplements in an ...
Detection of regulated herbs and plants in plant food supplements and traditional medicines using infrared spectroscopy.
a series of self-made triturations of the targeted plants. After pretreatment of the spectral data chemometric classification techniques were applied to both data sets (IR and NIR) separately and the ...
Zona pellucida gene mRNA expression in human oocytes is related to oocyte maturity, zona inner layer retardance and fertilization competence.
changes and intrinsic oocyte competence were successfully documented. As such PLM and CC gene expression are confirmed as valuable noninvasive techniques to evaluate oocyte competence. STUDY FUNDING ...