Category Archives: Sample treatment

Determination of tetracyclines in human urine samples by capillary electrophoresis in combination with field amplified sample injection.

A sensitive method using CZE‐UV detection has been developed for the determination of five tetracycline antibiotics in human urine samples. To improve the sensitivity of the method, an on‐line preconcentration strategy, named field‐amplified sample injection, has been developed, based on … Continue reading

Posted in CZE, Dilute and shoot, FASI, P12-AGR-1647, Tetracyclines, UV-vis, Urine | Tagged , | Comments Off on Determination of tetracyclines in human urine samples by capillary electrophoresis in combination with field amplified sample injection.

Evaluation of a selective approach for the determination of 5-nitroimidazoles in aquaculture products by capillary liquid chromatography using molecularly imprinted solid-phase extraction

Capillary liquid chromatography with UV detection is proposed for the determination of 5-nitroimidazole residues in aquaculture products. The separation was carried out in a C18 column at 20 °C, using a mobile phase consisting of water and acetonitrile, at 7 μL/min and … Continue reading

Posted in 5-nitroimidazoles, Aquaculture products, Capillary HPLC, Crab, MIPs, P12-AGR-1647, Prawn, Salmon, Velvet swimming crab | Tagged , , | Comments Off on Evaluation of a selective approach for the determination of 5-nitroimidazoles in aquaculture products by capillary liquid chromatography using molecularly imprinted solid-phase extraction

Determination of Fusarium toxins in functional vegetable milks applying salting-out-assisted liquid–liquid extraction combined with ultra-high-performance liquid chromatography tandem mass spectrometry

Vegetable milks are considered as functional foods due to their physiological benefits. Although the consumption of these products has significantly increased, they have received little attention in legislation with regard to contaminants. However, they may contain mycotoxins resulting from the … Continue reading

Posted in AGL2015-70708-R, Mass spectrometry, Mycotoxins, SALLE, UHPLC, Vegetable milks | Tagged , , | Comments Off on Determination of Fusarium toxins in functional vegetable milks applying salting-out-assisted liquid–liquid extraction combined with ultra-high-performance liquid chromatography tandem mass spectrometry

Simple determination of aflatoxins in rice by ultra-high performance liquid chromatography coupled to chemical post-column derivatization and fluorescence detection

A fast and simple analytical method was developed and characterized for the determination of aflatoxins (B1, B2, G1 and G2) in rice. The procedure is based on a simple solid-liquid extraction without further clean-up, and analysis by ultra-high performance liquid … Continue reading

Posted in AGL2015-70708-R, Aflatoxins, Fluorescence, Rice, Solid-liquid extraction, UHPLC | Tagged , | Comments Off on Simple determination of aflatoxins in rice by ultra-high performance liquid chromatography coupled to chemical post-column derivatization and fluorescence detection

A high-throughput UHPLC method for the analysis of 5-nitroimidazole residues in milk based on salting-out assisted liquid–liquid extraction.

A novel salting-out assisted liquid–liquid extraction (SALLE) method has been developed for the extraction of eight 5-NDZ antibiotics from milk samples prior to their analysis by UHPLC. An exhaustive study of the parameters involved in the SALLE procedure has been … Continue reading

Posted in 5-nitroimidazoles, Milk, P12-AGR-1647, SALLE, UHPLC, UV-vis | Tagged , , | Comments Off on A high-throughput UHPLC method for the analysis of 5-nitroimidazole residues in milk based on salting-out assisted liquid–liquid extraction.

Coupling sweeping-micellar electrokinetic chromatography with tandem mass spectrometry for the therapeutic monitoring of benzimidazoles in animal urine by dilute and shoot.

A new method based on micellar electrokinetic chromatography-tandem mass spectrometry (MEKC-MS/MS) has been developed for the identification and simultaneous quantification of thirteen benzimidazoles in animal urine. In order to obtain an appropriate separation with the highest sensitivity, different electrophoretic parameters … Continue reading

Posted in Anthelmintic, Benzimidazoles, Biological fluids, Dilute and shoot, Electrophoresis, MEKC, Mass spectrometry, P12-AGR-1647, Sweeping, Urine | Tagged , , | Comments Off on Coupling sweeping-micellar electrokinetic chromatography with tandem mass spectrometry for the therapeutic monitoring of benzimidazoles in animal urine by dilute and shoot.

Characterization of carbamate pesticides in natural water from Cameroon.

With the increased use of chemicals in agriculture for crop protection and improvement of yield, the contamination of water is currently a serious health concern. This study used solid-phase extraction with ultra-high-performance liquid chromatography–tandem mass spectrometry to evaluate the presence … Continue reading

Posted in Carbamates, Mass spectrometry, P12-AGR-1647, Pesticides, SPE, UHPLC, Water | Tagged , , | Comments Off on Characterization of carbamate pesticides in natural water from Cameroon.

Evaluation of hydrophilic interaction liquid chromatography–tandem mass spectrometry and extraction with molecularly imprinted polymers for determination of aminoglycosides in milk and milk-based functional foods.

An analytical method for the determination of eleven aminoglycosides in different types of milk and milk-based functional products has been optimized and validated. A hydrophilic interaction chromatography (HILIC) column was proposed for the separation of analytes by ultra-high performance liquid … Continue reading

Posted in AGL2015-70708-R, Aminoglycosides, HILIC, MIPs, Mass spectrometry, Milk, P12-AGR-1647 | Tagged , , | Comments Off on Evaluation of hydrophilic interaction liquid chromatography–tandem mass spectrometry and extraction with molecularly imprinted polymers for determination of aminoglycosides in milk and milk-based functional foods.

Evaluation of a multiresidue capillary electrophoresis-quadrupole-time-of-flight mass spectrometry method for the determination of antibiotics in milk samples.

A selective and rapid method has been developed to determine 15 antibiotic residues (eight tetracyclines and seven quinolones) in milk samples by capillary zone electrophoresis coupled with quadrupole time-of-flight mass spectrometry (CZE-Q-TOF-MS). The use of this hybrid mass spectrometer allowed … Continue reading

Posted in Antibiotics, CZE, Food, Mass spectrometry, Milk, P12-AGR-1647, Quinolones, SPE, Tetracyclines | Tagged , , | Comments Off on Evaluation of a multiresidue capillary electrophoresis-quadrupole-time-of-flight mass spectrometry method for the determination of antibiotics in milk samples.

Evaluation of a multiresidue capillary electrophoresis-quadrupole-time-of-flight mass spectrometry method for the determination of antibiotics in milk samples.

A selective and rapid method has been developed to determine 15 antibiotic residues (eight tetracyclines and seven quinolones) in milk samples by capillary zone electrophoresis coupled with quadrupole time-of-flight mass spectrometry (CZE-Q-TOF-MS). The use of this hybrid mass spectrometer allowed … Continue reading

Posted in Antibiotics, CZE, Mass spectrometry, Milk, P12-AGR-1647, Quinolones, SPE, Tetracyclines | Tagged , , | Comments Off on Evaluation of a multiresidue capillary electrophoresis-quadrupole-time-of-flight mass spectrometry method for the determination of antibiotics in milk samples.