Category Archives: β-lactams

Validation of a new method based on salting-out assisted liquid-liquid extraction and UHPLC-MS/MS for the determination of betalactam antibiotics in infant dairy products

Posted on 7 March, 2017 by fqm302

In this work a new multiresidue method has been developed for the determination of 15 betalactam antibiotics in infant milk and yogurt based on follow-on milk by ultra-high performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS). The separation was achieved in 6 min, … Continue reading →

Posted in Mass spectrometry, Milk, P12-AGR-1647, SALLE, UHPLC, Yogurt, β-lactams | Tagged , , | Comments Off on Validation of a new method based on salting-out assisted liquid-liquid extraction and UHPLC-MS/MS for the determination of betalactam antibiotics in infant dairy products

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

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 →

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Analysis of cephalosporin residues in environmental waters by capillary zone electrophoresis with off-line and on-line preconcentration

Posted on 1 August, 2012 by fqm302

A sensitive and reliable method using capillary zone electrophoresis with UV-diode array detection (CZE-DAD) has been developed and validated for trace determination of cephalosporin antibiotics in spring water, groundwater and river water matrices. Due to the lack of sensitivity of … Continue reading →

Posted in Antibiotics, CZE, Cephalosporins, LVSS, SPE, UV-vis, Water | Tagged | Comments Off on Analysis of cephalosporin residues in environmental waters by capillary zone electrophoresis with off-line and on-line preconcentration

Convenient solid phase extraction of cephalosporins in milk using a molecularly imprinted polymer

Posted on 26 June, 2012 by fqm302

In this paper, a molecularly imprinted polymer (MIP) for cephalosporin molecules (cephalexin (CFL) and cephapirin (CFP)), was prepared by non covalent molecular imprinting approach and applied to solid phase extraction (SPE). For MIP synthesis, a tributylammonium cefadroxil salt (TBA–CFD) was … Continue reading →

Posted in Cephalosporins, MIPs, Milk | Tagged | Comments Off on Convenient solid phase extraction of cephalosporins in milk using a molecularly imprinted polymer