Category Archives: Chromatography

QuEChERS-based method for the determination of carbamate residues in aromatic herbs by UHPLC-MS/MS

Posted on 16 September, 2016 by fqm302

A new reliable, fast and highly sensitive method based on ultra-high performance liquid chromatography tandem mass spectrometry has been developed and validated for the determination of 28 carbamates in aromatic herbs. A modified QuEChERS-based method was optimized for the extraction … Continue reading →

Posted in AGL2015-70708-R, Aromatic herbs, Carbamates, Mass spectrometry, QuEChERS, UHPLC | Tagged | Comments Off on QuEChERS-based method for the determination of carbamate residues in aromatic herbs by UHPLC-MS/MS

Rapid and simple UHPLC-ESI-MS/MS method for the screening of propyl propane thiosulfonate, a new additive for animal feed

Posted on 4 July, 2016 by fqm302

Allium derivative propyl propane thiosulfonate (PTSO) is a new additive for animal feed which improves animal health when used as an alternative to antibiotic growth promoters. Despite the effort of the European Union to ensure the control of animal feed … Continue reading →

Posted in Animal feed, Mass spectrometry, PTSO, UHPLC | Tagged | Comments Off on Rapid and simple UHPLC-ESI-MS/MS method for the screening of propyl propane thiosulfonate, a new additive for animal feed

Development of a QuEChERS-based extraction method for the determination of destruxins in potato plants by UHPLC–MS/MS

Posted on 15 December, 2015 by fqm302

Ultra high performance liquid chromatography–tandem mass spectrometry (UHPLC–MS/MS) with electrospray ionization has been proposed for the determination of fifteen natural destruxins (A, B, C, D, E, Ed, Ed1, A2, B2, D2, E2, Cl, DesmA, DesmB, and DH-A), secondary metabolites with … Continue reading →

Posted in Destruxins, Mass spectrometry, Metabolites, Mycotoxins, Plants, Potato plant, QuEChERS, UHPLC | Tagged | Comments Off on Development of a QuEChERS-based extraction method for the determination of destruxins in potato plants by UHPLC–MS/MS

Hollow-fiber liquid-phase microextraction combined with capillary HPLC for the selective determination of six sulfonylurea herbicides in environmental waters

Posted on 15 October, 2013 by fqm302

A three-phase hollow-fiber liquid-phase microextraction combined with a capillary LC method using diode array detection was proposed for the determination of six sulfonylurea herbicides, triasulfuron, metsulfuron-methyl, chlorsulfuron, flazasulfuron, chlorimuron-ethyl, and primisulfuron-methyl, in environmental water samples. Different factors that can affect … Continue reading →

Posted in Capillary HPLC, Hollow-fiber liquid-phase microextraction, Sulfonylurea, UV-vis, Water | Tagged , , | Comments Off on Hollow-fiber liquid-phase microextraction combined with capillary HPLC for the selective determination of six sulfonylurea herbicides in environmental waters

Ultrasound-assisted surfactant-enhanced emulsification microextraction for the determination of carbamates in wines by ultra-high performance liquid chromatography–tandem mass spectrometry

Posted on 14 October, 2013 by fqm302

A new sensitive multiresidue method based on ultra-high performance liquid chromatography–tandem mass spectrometry (UHPLC–MS/MS) has been developed for the detection, confirmation and quantification of twenty five carbamates in wine samples. The separation was achieved in 5.5 min, using a Zorbax Eclipse … Continue reading →

Posted in Carbamates, Mass spectrometry, UASEME, UHPLC, Wine | Tagged , | Comments Off on Ultrasound-assisted surfactant-enhanced emulsification microextraction for the determination of carbamates in wines by ultra-high performance liquid chromatography–tandem mass spectrometry

Simple methodology for the determination of mycotoxins in pseudocereals, spelt and rice

Posted on 4 September, 2013 by fqm302

Nowadays the interest and consumption of pseudocereals is increasing due to their nutritional properties. Like cereals and oilseeds, pseudocereal seeds are susceptible to fungal growth and mycotoxin contamination; however these matrices have received little attention in literature. A sensitive, simple … Continue reading →

Posted in Mass spectrometry, Pseudocereals, QuEChERS, Rice, Spelt, UHPLC | Tagged | Comments Off on Simple methodology for the determination of mycotoxins in pseudocereals, spelt and rice

Ion-paired extraction of cephalosporins in acetone prior to their analysis by capillary liquid chromatography in environmental water and meat samples

Posted on 2 August, 2013 by fqm302

Ion-pair extraction of cephalosporins from aqueous solution into acetone by the addition of ammonium sulfate to a 1:2 (v/v) acetone–water solvent was carried out followed by their determination using reversed-phase capillary liquid chromatography. The analytes included are cephoperazone, cefquinome, cephalexin, … Continue reading →

Posted in Capillary HPLC, Cephalosporins, Meat, SALLE, UV-vis, Water | Tagged , | Comments Off on Ion-paired extraction of cephalosporins in acetone prior to their analysis by capillary liquid chromatography in environmental water and meat samples

A new approach in sample treatment combined with UHPLC-MS/MS for the determination of multiclass mycotoxins in edible nuts and seeds

Posted on 15 May, 2013 by fqm302

A sensitive, simple and rapid method for the determination of fourteen mycotoxins in nuts and seeds (including almonds, peanuts, sunflower seeds, pumpkin seeds, walnuts, macadamia nuts, pistachios, hazelnuts and pine nuts) has been developed using ultra-high performance liquid chromatography coupled … Continue reading →

Posted in DLLME, Mass spectrometry, Nuts, QuEChERS, Seeds, UHPLC | Tagged | Comments Off on A new approach in sample treatment combined with UHPLC-MS/MS for the determination of multiclass mycotoxins in edible nuts and seeds

Multiclass mycotoxin analysis in Silybum marianum by ultra high performance liquid chromatography–tandem mass spectrometry using a procedure based on QuEChERS and dispersive liquid–liquid microextraction

Posted on 26 February, 2013 by fqm302

Ultra high performance liquid chromatography–tandem mass spectrometry (UHPLC–MS/MS) has been proposed for the determination of 15 mycotoxins in milk thistle (Silybum marianum), including aflatoxins, fumonisins, trichothecenes, ochratoxin A, citrinin, sterigmatocystin and zearalenone. The mycotoxins were detected by electrospray ionization in … Continue reading →

Posted in DLLME, Mass spectrometry, Milk thistle, Mycotoxins, QuEChERS, UHPLC | Tagged | Comments Off on Multiclass mycotoxin analysis in Silybum marianum by ultra high performance liquid chromatography–tandem mass spectrometry using a procedure based on QuEChERS and dispersive liquid–liquid microextraction

Advances in the determination of β-lactam antibiotics by liquid chromatography

Posted on 15 August, 2012 by fqm302

β-lactam antibiotics have been the most widely used antimicrobial drugs for more than 80 years and still constitute the most important group of antibiotics. Their extensive use in veterinary medicine practices as growth promoters, and chemotherapeutic and/or prophylactic agents causes numerous … Continue reading →

Posted in Antibiotics, Chromatography, Drugs, Review, β-lactams | Tagged , | Comments Off on Advances in the determination of β-lactam antibiotics by liquid chromatography