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Résultats de la recherche - 11 results
Development and validation of a quantitative UHPLC-MS/MS method for selected brominated flame retardants in food.
acetonitrile followed by a fast dispersive solid-phase extraction (dSPE) clean-up and extraction of the other BFR s with a mixture of hexane and dichloromethane (1:1, v/v) with subsequent clean-up using ...
Study of the possible migration risks of food contact materials for children under 3 years
dichloromethane (DCM)-n-hexane (1:1 and 1:3). The extracts resulting from the LLE step were analysed on GC-(EI) MS by monitoring specific ions for each analyte and for the internal standard. EtOAc-n-hexane (1:1) ...
In vitro mutagenicity and antimutagenicity of dichloromethane leaf extracts of seven Protea species using Ames test
Publication Type: Peer reviewed scientific article Authors: Makgapeetja, M.D.; Makhafola, T.J.; Pieters, L.; Luc Verschaeve; Elgorashi, E.E. Source: South African Journal of Botany, Volume 103, Number 326 (2016) Keywords: aflatoxin B1 Ames test Neutral Re ...
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 ...
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 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.
Thiocarbamates Thiourea Vegetables Abstract: Previous published methods for the analysis of ETU and PTU are time-consuming and furthermore use dichloromethane (DCM) for extraction or clean-up. This study details ...
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 ...
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). ...
Mutagenic and antimutagenic properties of extracts from South African traditional medicinal plants
Dichloromethane extracts medicinal plants Methanol extracts mutagenicity Health Topics: Health and environment Santé et environnement Gezondheid en milieu Service: Contaminants organiques et additifs Organische ...
GLC determination of pemoline in biological fluids153
avoided by acid hydrolysis of the drug to 5-phenyl-2,4-oxazolidinedione, which then can be easily isolated by two-phase extraction with dichloromethane, ether, or chloroform. Amide-imide tautomerism enables ...