- Bedoelde u
- valid phase extraction
Zoekresultaten - 9 results
Determination of caramel colorants' by-products in liquid foods by ultra-high-performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS).
Inspection France Furaldehyde Imidazoles Limit of Detection Molecular Structure Reproducibility of Results Solid phase extraction Spectrometry, Mass, Electrospray Ionization Tandem Mass Spectrometry Abstract: ...
Analysis of glyphosate residue in liver by UPLC-MS/MS
Glycine glyphosate herbicide herbivore Individuals injection IS IT Liver matrix method Mode Nitrogen ON Quantification regulation Residue separation Solid phase extraction SPE STANDARD Strategies Strategy ...
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
regulation Reproducibility Residue result results Solid phase extraction SPE Strategies Strategy surrogate System time Type UPLC use VALIDATION WATER waters Yield Abstract: Chlormequat is a plant growth ...
A proteomics approach for the quantification of Staphylococcus aureus enterotoxins a and b in several matrices using uplc-msms analysis.
high specificity of the method. The sample is then injected and analysed using online Solid Phase Extraction (SPE) – UPLC – MS / MS. Analytes of interest are trapped on the SPE-column, while e.g. ...
On-line solid-phase extraction with ultra performance liquid chromatography and tandem mass spectrometry for the detection of nicotine, cotinine and trans-3'-hydroxycotinine in urine to strengthen human biomonitoring and smoking cessation studies.
Liquid cotinine environmental exposure Humans Nicotine Reproducibility of Results Sensitivity and Specificity SMOKING Smoking cessation Solid phase extraction Tandem Mass Spectrometry Tobacco Smoke ...
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). ...
Optimization and validation of a liquid chromatography tandem mass spectrometry (LC/MSn) method for analysis of corticosteroids in bovine liver: evaluation of Keyhole Limpet beta-glucuronidase/sulfatase enzyme extract.
with Solid Phase Extraction (SPE) before analysis with LC / MS (n). Two different enzyme extracts (originating from Helix Pomatia and Keyhole Limpet) and three SPE elution solvents (ethyl acetate, ...
A modified sample preparation for acrylamide determination in cocoa and coffee products
presented in this work. For the sample pretreatment, different solvents, purification steps, and solid-phase extraction cartridges were evaluated. The analyses were carried out on a µ-Bondapak C18 column ...