Zoekresultaten - 36 results
Analysis of benzophenone and 4-methylbenzophenone in breakfast cereals using ultrasonic extraction in combination with gas chromatography-tandem mass spectrometry (GC-MS(n)).
a mixture of dichloromethane and acetonitrile (1:1), followed by a clean-up of the extract using solid phase extraction with a silica cartridge. Finally, the extract was analysed by GC- MS (n). ...
Accuracy and reproducibility of automated estradiol-17beta and progesterone assays using native serum samples: results obtained in the Belgian external assessment scheme.
it is suggested that, for performance testing, results be compared whenever possible with a reference method. The linear relationship as assessed by comparing results with those obtained by ID- GC / MS ...
A downscaled multi-residue strategy for detection of anabolic steroids in bovine urine using gas chromatography tandem mass spectrometry (GC-MS3).
applied analysis method resulted in a procedure for which high performance liquid chromatographic (HPLC) fractionation prior to GC- MS (n) analysis was no longer required. Analytical results could be ...
The international validation of bio- and chemical-analytical screening methods for dioxins and dioxin-like PCBs: the DIFFERENCE project rounds 1 and 2
project DIFFERENCE is focussed on the development, optimisation and validation of screening methods for dioxin analysis, including bio-analytical and chemical techniques (CALUX, GC- LRMS / MS, GC Service: ...
Occurrence of Perillaldehyde and Other (Suspected) Genotoxic Flavoring Substances in Water-Based Beverages Consumed by Belgian Children
flavoring substance monitoring furan-2(5H)-one genotoxicity perillaldehyde SAFE GC/MS Abstract: Despite the extensive use of flavoring substances in food, their monitoring for regulatory purposes is currently ...
Determinants of persistent organic pollutant (POP) concentrations in human breast milk of a cross-sectional sample of primiparous mothers in Belgium
concentrations in breast milk samples were determined by GC- ECNI- MS and GC- EI- MS / MS depending on the analytes’ sensitivity. Associations between POP concentrations in breast milk and potential determinants ...