Category Archives: Sample treatment

Monitoring of cyanotoxins in water from hypersaline microalgae colonies by ultra high performance liquid chromatography with diode array and tandem mass spectrometry detection following salting-out liquid-liquid extraction.

Posted on 10 December, 2019 by fqm302

In this study two different analytical approaches have been developed to determine the presence of several cyanotoxins in saline water samples from a continental salt marsh. A salting-out assisted liquid-liquid extraction (SALLE) has been used in combination with ultra-high performance … Continue reading →

Posted in Cyanotoxins, Mass spectrometry, RTI2018-097043-B-I00, SALLE, UHPLC, UV-vis, Water | Tagged , , , | Comments Off on Monitoring of cyanotoxins in water from hypersaline microalgae colonies by ultra high performance liquid chromatography with diode array and tandem mass spectrometry detection following salting-out liquid-liquid extraction.

Plant-based milks: unexplored source of emerging mycotoxins. A proposal for the control of enniatins and beauvericin using UHPLC-MS/MS

Posted on 3 December, 2019 by fqm302

Mycotoxins have become one of the most common contaminants reported worldwide. Current legislation has established maximum levels only for some well-known mycotoxins; however, there are many other “emerging mycotoxins” for which there is no regulation, as enniatins and beauvericin. An … Continue reading →

Posted in AGL2015-70708-R, Enniatins, Mass spectrometry, SALLE, UHPLC, Vegetable milks | Tagged , , | Comments Off on Plant-based milks: unexplored source of emerging mycotoxins. A proposal for the control of enniatins and beauvericin using UHPLC-MS/MS

Screening of extraction properties of nanofibers in a sequential injection analysis system using a 3D printed device.

Posted on 15 February, 2019 by fqm302

A novel application of the three-dimensional printing technology for the automation of solid phase extraction procedures in a low-pressure sequential injection analysis system is presented. A 3D printed device was used as a housing for nanofiber membranes in solid phase … Continue reading →

Posted in Sequential injection analysis, automated SPE | Comments Off on Screening of extraction properties of nanofibers in a sequential injection analysis system using a 3D printed device.

In-house validation of a rapid and efficient procedure for simultaneous determination of ergot alkaloids and other mycotoxins in wheat and maize

Posted on 26 November, 2018 by fqm302

A fundamental step in addressing the global problem of mycotoxins is the development of highly sensitive, multi-class extraction and detection methods. This constitutes a field of research that has in recent years enjoyed a steady advance. Such methods, generally based … Continue reading →

Posted in AGL2015-70708-R, Maize, Mass spectrometry, SALLE, UHPLC, Wheat | Tagged , , | Comments Off on In-house validation of a rapid and efficient procedure for simultaneous determination of ergot alkaloids and other mycotoxins in wheat and maize

Aspergillus section Flavi and aflatoxins in dried figs and nuts in Algeria

Posted on 18 June, 2018 by fqm302

The presence of Aspergillus section Flavi and aflatoxin (AF) contamination was investigated in 112 samples of peanuts, almonds and dried figs collected in Algeria. The occurrence of aflatoxin B1 (AFB1), B2 (AFB2), G1 (AFG1) and G2 (AFG2) in different commodities has been determined with … Continue reading →

Posted in AGL2015-70708-R, Aflatoxins, Dried fruit, HPLC, Mycotoxins, Nuts, Photo-induced, Solid-liquid extraction | Tagged , | Comments Off on Aspergillus section Flavi and aflatoxins in dried figs and nuts in Algeria

Development and validation of a QuEChERS method for the analysis of 5-nitroimidazole traces in infant milk-based samples by ultra-high performance liquid chromatography-tandem mass spectrometry

Posted on 14 June, 2018 by fqm302

QuEChERS (Quick, Easy, Cheap, Effective, Rugged and Safe) methodology in combination with UHPLC–MS/MS is proposed for the determination of 5-nitroimidazole (5-NDZ) residues in infant milk-based products. Chromatographic separation was accomplished in a C18 Zorbax Eclipse Plus RRHD (50 × 2.1 mm, 1.8 μm) column … Continue reading →

Posted in 5-nitroimidazoles, AGL2015-70708-R, Infant foods, Mass spectrometry, P12-AGR-1647, QuEChERS, UHPLC | Tagged , , | Comments Off on Development and validation of a QuEChERS method for the analysis of 5-nitroimidazole traces in infant milk-based samples by ultra-high performance liquid chromatography-tandem mass spectrometry

Green and simple analytical method to determine benzimidazoles in milk samples by using salting-out assisted liquid-liquid extraction and capillary liquid chromatography

Posted on 29 May, 2018 by fqm302

A green and simple multiresidue method using capillary liquid chromatography (CLC) with UV-diode array detection (DAD) has been developed for the determination of sixteen benzimidazoles (BZs) and its metabolites in milk samples. The separation was achieved in <32 min, using a … Continue reading →

Posted in AGL2015-70708-R, Benzimidazoles, Capillary HPLC, Milk, P12-AGR-1647, SALLE, UV-vis | Tagged , , | Comments Off on Green and simple analytical method to determine benzimidazoles in milk samples by using salting-out assisted liquid-liquid extraction and capillary liquid chromatography

Optimization of a modified QuEChERS method for the determination of tetracyclines in fish muscle by UHPLC–MS/MS.

Posted on 20 March, 2018 by fqm302

In this work a sample treatment based on a modified QuEChERS method combined with ultra-high-performance liquid chromatography–tandem mass spectrometry (UHPLC–MS/MS) was proposed to determine the residues of five common tetracyclines in fish muscle samples. The separation was achieved in less … Continue reading →

Posted in Mass spectrometry, Panga, QuEChERS, Salmon, Tetracyclines, UHPLC | Tagged , , | Comments Off on Optimization of a modified QuEChERS method for the determination of tetracyclines in fish muscle by UHPLC–MS/MS.

Ultra-high performance liquid chromatography with fluorescence detection following salting-out assisted liquid–liquid extraction for the analysis of benzimidazole residues in farm fish samples

Posted on 14 March, 2018 by fqm302

Ultra-high performance liquid chromatography (UHPLC) coupled with fluorescence detection (FL) has been proposed for the first time to determine thirteen benzimidazoles (BZs) in farmed fish samples. In order to optimize the chromatographic separation, parameters such as mobile phase composition and … Continue reading →

Posted in AGL2015-70708-R, Anthelmintic, Aquaculture products, Benzimidazoles, Fluorescence, P12-AGR-1647, SALLE, Sea bass, Sea bream, Trout, UHPLC | Tagged , , | Comments Off on Ultra-high performance liquid chromatography with fluorescence detection following salting-out assisted liquid–liquid extraction for the analysis of benzimidazole residues in farm fish samples

Simple and rapid determination of 5-nitroimidazoles and metabolites in fish roe samples by salting-out assisted liquid-liquid extraction and UHPLC-MS/MS.

Posted on 23 February, 2018 by fqm302

A novel multiresidue method is proposed for the determination of 12 5-nitroimidazoles and their metabolites in fish roe samples using UHPLC-MS/MS. A salting-out assisted liquid-liquid extraction procedure was performed prior to sample analysis. The separation of compounds was accomplished using … Continue reading →

Posted in 5-nitroimidazoles, Fish roe, Mass spectrometry, P12-AGR-1647, SALLE, UHPLC | Tagged , , | Comments Off on Simple and rapid determination of 5-nitroimidazoles and metabolites in fish roe samples by salting-out assisted liquid-liquid extraction and UHPLC-MS/MS.