Résultats de la recherche - 62 results
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 ...
Identification of potential migrants from printing inks used on paper and board food contact materials
health identification identification of unkowns identify Impact INFORMATION Instrument Instruments International IS liquid chromatography Mass Mass Spectrometry method methods Migration Mode ON Paper ...
A rapid and environmental friendly determination of the dithiocarbamate metabolites ethylenethiourea and propylenethiourea in fruit and vegetables by ultra high performance liquid chromatography tandem mass spectrometry.
Chromatography, High Pressure Liquid Drug Stability Ethylenethiourea Fruit Fungicides, Industrial Linear Models Pesticide residues Reproducibility of Results Sensitivity and Specificity Tandem Mass Spectrometry ...
Rapid analysis of melamine residue in milk, milk products, bakery goods and flour by ultra-performance liquid chromatography/tandem mass spectrometry: From food crisis to accreditation
extraction step with a solution of acetonitrile-water, ultrasound treatment and a liquid-liquid extraction with dichloromethane for fat removal. The purified extract is further diluted before injection on ...
Rapid method for the confirmatory analysis of chrysoidine in aquaculture products by ultra-performance liquid chromatography-tandem mass spectrometry.
in aquaculture products with ultra-performance liquid chromatography-tandem mass spectrometry (UPLC- MS / MS) is presented. Muscle tissues were made alkaline with sodium hydroxide and extracted with ...
Validation of a liquid chromatography-mass spectrometric assay for tacrolimus in peripheral blood mononuclear cells.
per 10 cells. TAC was extracted by a liquid-liquid extraction in basic medium (NH4OH) with 1-chlorobutane, and ascomycin was used as internal standard. After evaporation of the supernatant under ...
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.
European European Commission EVALUATION Hydrolysis Interference IS Lead Less liquid chromatography Liver Mass Mass Spectrometry method observed RANGE Reproducibility result results Sample Solvents Tandem ...
Determination of bixin and norbixin in meat using liquid chromatography and photodiode array detection
and norbixin, in meat tissue is described. Liquid-solid extraction was carried out using acetonitrile. Analysis was by HPLC with photodiode array detection using two fixed wavelengths (458 and 486 nm). ...
A modified sample preparation for acrylamide determination in cocoa and coffee products
introducing a protein precipitation step with Carrez I and II solutions and a liquid-liquid extraction with ethyl acetate in combination with solid-phase extraction during the sample clean-up. A limit of ...
Compounding of vitamin A, D3, E and K3 supplements for cystic fibrosis patients: formulation and stability study
Keywords: administration & dosage ALL alternative an article AS at Belgian Belgium Capsules chemistry CHILDREN Cholecalciferol Chromatography,High Pressure Liquid Combination Cystic Fibrosis d DRUG Drug ...