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Recent Posts
- Assessing human exposure to pesticides and mycotoxins: optimization and validation of a method for multianalyte determination in urine samples.
- Capillary electrophoresis tandem mass spectrometry to determine multiclass cyanotoxins in reservoir water and spinach samples.
- Determination of bile acids in serum of pigs exposed to polychlorinated biphenyls by liquid chromatography-mass spectrometry.
- Mycotoxin occurrence in milk and durum wheat samples from Tunisia using dispersive liquid–liquid microextraction and liquid chromatography with fluorescence detection.
- Deeper insights into the effects of low dietary levels of polychlorinated biphenyls on pig metabolism using gas chromatography-high resolution mass spectrometry metabolomics.
Tags
Category Archives: UV-vis
Evaluation of dispersive liquid-liquid microextraction for the determination of patulin in apple juices using micellar electrokinetic capillary chromatography
Patulin (PAT) is a mycotoxin naturally found in fruits, including apples. Its occurrence as a natural contaminant of fruit juices is indicative of fruit quality in production. The European Union has set the maximum content of patulin in 50 μg/kg … Continue reading
Dispersive liquid-liquid microextraction prior to field-amplified sample injection for the sensitive analysis of 3,4- methylenedioxymetamphetamine, phencyclidine and lysergic acid diethylamide by capillary electrophoresis in human urine
A novel capillary zone electrophoresis (CZE) with ultraviolet detection method has been developed and validated for the analysis of 3,4-methylenedioxymethamphetamine (MDMA), lysergic acid diethylamide (LSD) and phencyclidine (PCP) in human urine. The separation of these three analytes has been achieved … Continue reading
Posted in Biological fluids, CZE, DLLME, Drugs, Electrophoresis, FASI, UV-vis, Urine
Tagged CE
Comments Off on Dispersive liquid-liquid microextraction prior to field-amplified sample injection for the sensitive analysis of 3,4- methylenedioxymetamphetamine, phencyclidine and lysergic acid diethylamide by capillary electrophoresis in human urine
Analysis of cephalosporin residues in environmental waters by capillary zone electrophoresis with off-line and on-line preconcentration
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 CE
Comments Off on Analysis of cephalosporin residues in environmental waters by capillary zone electrophoresis with off-line and on-line preconcentration
Determination of 5-nitroimidazoles and metabolites in environmental samples by micellar electrokinetic chromatography
A method based on micellar electrokinetic chromatography (MEKC) with UV detection has been developed for the determination of nine 5-nitroimidazoles (5-NDZs), including metabolites in river water samples. Due to the relative insensitivity of UV detection in MEKC, a solid-phase extraction … Continue reading
Determination of carbamates at trace levels in water and cucumber by capillary liquid chromatography
A sensitive and reliable method using capillary HPLC with UV-diode array detection (DAD) has been developed and validated for trace determination of carbamate pesticides in cucumber and environmental water samples. The analytes, including carbofuran, carbaryl, methiocarb, promecarb, benthiocarb and fenoxycarb, … Continue reading
Posted in Capillary HPLC, Carbamates, Chromatography, Food, Pesticides, SPE, UV-vis, Vegetables, Water
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Desarrollo de un método MEKC para la determinación de 5-nitroimidazoles en aguas de río
Los 5-nitroimidazoles (5-NDZs) son antimicrobianos con propiedades antibacterianas y antiprotozoarias. Debido a estas características se ha extendido su uso tanto como antibióticos humanos como veterinarios, mostrando eficacia contra la mayoría de bacterias anaerobias Gram negativas y algunas Gram positivas (Bacteroides … Continue reading
Posted in 5-nitroimidazoles, Drugs, MEKC, SPE, Trabajo fin máster, UV-vis, Water
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Evaluación de la microextracción líquido-líquido dispersiva para la determinación de patulina en zumos de manzana mediante electroforesis capilar
La contaminación microbiológica de los alimentos es la causa principal de las enfermedades de origen alimentario. Dentro de este tipo de contaminación destacan las micotoxinas, sustancias producidas por ciertos hongos pertenecientes principalmente a los géneros Aspergillus, Fusarium y Penicillium. Estas … Continue reading
Posted in DLLME, Juice, MEKC, Mycotoxins, Trabajo fin máster, UV-vis
Tagged CE
Comments Off on Evaluación de la microextracción líquido-líquido dispersiva para la determinación de patulina en zumos de manzana mediante electroforesis capilar
Use of dispersive liquid–liquid microextraction for the determination of carbamates in juice samples by sweeping-micellar electrokinetic chromatography
Dispersive liquid–liquid microextraction (DLLME) has been proposed for the extraction and preconcentration of 12 carbamate pesticides in juice samples, followed by their determination by micellar electrokinetic chromatography with diode-array detection. To improve sensitivity, an on-capillary sample concentration method based on … Continue reading
Posted in Carbamates, DLLME, Electrophoresis, Juice, MEKC, Stacking, UV-vis
Tagged CE
Comments Off on Use of dispersive liquid–liquid microextraction for the determination of carbamates in juice samples by sweeping-micellar electrokinetic chromatography
Trace determination of sulfonylurea herbicides in water and grape samples by capillary zone electrophoresis using large volume sample stacking
A sensitive and reliable method using capillary zone electrophoresis with UV-diode array detection has been developed and validated for trace determination of residues of sulfonylurea herbicides in environmental water samples and grapes from different origins. The analytes included are triasulfuron, … Continue reading
Posted in CZE, Electrophoresis, Food, Fruit, Pesticides, Stacking, Sulfonylurea, UV-vis, Water
Tagged CE
Comments Off on Trace determination of sulfonylurea herbicides in water and grape samples by capillary zone electrophoresis using large volume sample stacking
