Search results for "Hplc ms ms"

showing 4 items of 4 documents

A survey of mycotoxins in random street-vended snacks from Lagos, Nigeria, using QuEChERS-HPLC-MS/MS

2013

Abstract A survey in African snacks was carried out in order to evaluate the intake of 23 mycotoxins. The African snack samples were purchased from street vendors within Lagos metropolis (Nigeria) and evaluated for the presence of 23 mycotoxins using a modified QuEChERS procedure coupled with liquid chromatography-triple quadrupole linear ion trap mass spectrometer. The snacks included akara, baked coconut, coconut candy, donkwa, groundnut cake (kulikuli), lafun, milk curd (wara), fresh and dried tiger-nuts, and yam flour. Only three mycotoxins were detected in 23.8% of the studied snacks, and at concentrations ranging from 6 to 54 μg kg−1. The concentrations of aflatoxin B1 (AFB1) and AFB2…

CassavaAflatoxinCoconutMycotoxinsQuechersFood and drug administrationGroundnutchemistry.chemical_compoundHplc ms mschemistryFood scienceLC-MS/MSSnacksMycotoxinFood ScienceBiotechnologyMathematicsFood Control
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Multi-mycotoxin analysis in North African semolina samples using a modified QuEChERS-based extraction procedure and HPLC–MS/MS

2014

ChromatographyHplc ms msChemistryEnvironmental chemistryExtraction (chemistry)North africanGeneral MedicineToxicologyQuechersMulti mycotoxinToxicology Letters
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Advances in the analysis of legal and illegal drugs in the aquatic environment

2013

We review the current methods developed for the analysis of legal and illegal drugs (LIDs) and their metabolites in environmental samples. We discuss the advantages and the pitfalls of multi-class methods with emphasis on new strategies for sample preparation and recent technical developments. Finally, we present the applicability of these methods to the analysis of LIDs in protected environmental areas.

Drugs of abuseAquatic environmentEnvironmental chemistryLc ms msComputingMilieux_LEGALASPECTSOFCOMPUTINGBusinessUhplc ms msEnvironmental planningSpectroscopyAnalytical ChemistryThc coohTrAC Trends in Analytical Chemistry
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Mycotoxins in herbal teas marketed in Latvia and dietary exposure assessment

2019

The occurrence of 12 mycotoxins has been analysed by liquid chromatography - time of flight mass spectrometry in the batch of 60 herbal teas purchased from drugstores in Latvia. Among the dry tea samples, 90% were positive for one to eight mycotoxins. Enniatin B and deoxynivalenol (DON) were the most frequently detected mycotoxins in 55% and 45% of the samples, respectively. DON reached the highest level, from 129 µg kg-1 in herbal blend to 5,463 µg kg-1 in wormwood tea. Ochratoxin A (OTA) and aflatoxin B1 (AFB1) were found in 10% and 20% of the samples at the concentrations ranged between 2.99-30.3 µg kg-1 and 3.40-23.7 µg kg-1. Studies of the tea infusion process indicated that 32-100% of…

Ochratoxin AAflatoxinHplc tof msFood ContaminationBiologyToxicologyRisk AssessmentDietary Exposurechemistry.chemical_compoundTandem Mass SpectrometryHumansFood scienceMycotoxinZearalenoneChromatography High Pressure LiquidEnniatin BDietary exposurePublic Health Environmental and Occupational HealthReproducibility of ResultsMycotoxinsLatviaHplc ms mschemistryTeas HerbalFood AnalysisFood ScienceFood Additives & Contaminants: Part B
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