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Résultats de la recherche - 13 results
Development of a reliable UHPLC-MS/MS method for simultaneous determination of zearalenone and zearalenone-14-glucoside in various feed products
Frontiers in Chemistry, Volume 10 (2022) Keywords: feed products HLB cartridges ultra-high-performance liquid chromatography–tandem mass spectrometry Zearalenone zearalenone-14-glucoside Abstract: A reliable ...
Development and validation of a microfluidic multiplex immunoassay for the determination of levels and avidity of serum antibodies to tetanus, diphtheria and pertussis antigens.
microfluidic channels of the assay cartridges of the system. The developed assay showed very good sensitivity, specificity, and intra- and inter-assay coefficients of variation (CV s for the different antigens ...
Optimization and validation of an analytical method for the quantification of short- and medium-chained chlorinated paraffins in food by gas chromatography-mass spectrometry
Fractionation using silica cartridges efficiently removed a number of potentially interfering halogenated compound classes from sample extracts while retaining 96% of ∑ SCCP s and 99% of ∑ MCCP s. Limits of ...
Development and Validation of a UHPLC-ESI-MS/MS Method for Quantification of Oleandrin and Other Cardiac Glycosides and Evaluation of Their Levels in Herbs and Spices from the Belgian Market
urine were diluted with acidified water and purified on Oasis® HLB SPE cartridges. Limits of quantification were in the range of 1.5–15 ng/g for herbs and 0.025–1 ng/mL for urine. The mean recovery of ...
Performance of a Cartridge-Based Assay for Detection of Clinically Significant Human Papillomavirus (HPV) Infection: Lessons from VALGENT (Validation of HPV Genotyping Tests).
performance. Through VALGENT, we assessed the performance of the cartridge-based Xpert HPV assay (Xpert HPV), which detects 14 high-risk (HR) types and resolves HPV16 and HPV18 /45. Samples from women attending ...
Analysis of glyphosate residue in liver by UPLC-MS/MS
a solid phase extraction (SPE) on a Weak Anion Exchange cartridge. The glyphosate is eluted by basified methanol and then dried with a nitrogen stream. One milliliter of water is added in the tube before ...
Multi-dye residue analysis of triarylmethane, xanthene, phenothiazine and phenoxazine dyes in fish tissues by ultra-performance liquid chromatography-tandem mass spectrometry.
tandem solid phase extraction using weak and strong cation exchange cartridges. Extracts were analysed by UPLC- MS (n) operating in the positive electrospray ionisation mode (ESI +). The fourteen dyes were ...
Analysis of chlormequat residue in milk by UPLC-MS/MS
precipitate protein, respectively. This step was followed by a solid phase extraction (SPE) of the aqueous phase on a Weak Cation Exchange cartridge. The chlormequat was eluted by using ammonium acetate, before ...
Clean up strategy for the analysis of PAH in food of animal origin
clean-up step. Phenyl and C18 cartridges were used as chemical filters: the DACC Acetonitrile eluate was directly loaded. In the opposite, normal phase such as silica and SupeIMIP® required a solvent ...
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). ...