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Performance comparison of narrow-bore and capillary liquid-chromatography for non-targeted metabolomics profiling by HILIC-QTOF-MS.
Talanta
August 2023
Dr. Margarete Fischer-Bosch-Institute of Clinical Pharmacology, Stuttgart, Germany and University of Tuebingen, Tuebingen, Germany. Electronic address:
Clinical metabolomics studies often have to cope with limited sample amounts, thus miniaturized liquid chromatography (LC) systems are a promising alternative. Their applicability has already been demonstrated in various fields, including a few metabolomics studies that mainly used reversed-phase chromatography. However, hydrophilic interaction chromatography (HILIC), which is widely used in metabolomics due to its particular suitability for the analysis of polar molecules, has rarely been tested for miniaturized LC-MS analysis of small molecules.
View Article and Find Full Text PDF[Determination of Haloacetic Acids, Disinfection Byproducts, in Tap Water with Reversed-Phase Ultra-Performance Liquid Chromatography-High Resolution Mass Spectrometry].
Sichuan Da Xue Xue Bao Yi Xue Ban
May 2022
Department of Public Health Laboratory Science, West China-PUMC C.C.Chen Institute of Health, West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu 610041, China.
Objective: To establish a method for quantitative analysis of haloacetic acids (HAAs), disinfection byproducts, in tap water with reversed-phase ultra-performance liquid chromatography-quadrupole-orbitrap high resolution mass spectrometry.
Methods: Tap water samples were collected and 0.70 g/L ascorbic acid was added to eliminate residual chlorine.
Development and application of a fast ultra-high performance liquid chromatography-trapped ion mobility mass spectrometry method for untargeted lipidomics.
J Chromatogr A
June 2022
Department of Pharmacy, University of Salerno, Via Giovanni Paolo II 132, Fisciano, SA, Italy.
The alteration of lipid profile in biological specimens, such as plasma, mirrors abnormalities in their homeostasis and offers pivotal information for disease comprehension. Fast analytical methods are needed to highlight changes in plasma lipid profile and deliver rapid results. In this study we developed a fast reversed phase ultra high performance liquid chromatography-trapped ion mobility mass spectrometry (RP-UHPLC-TIMS-MS) method for untargeted lipidomics.
View Article and Find Full Text PDFA comparative study of two HPLC methods for dissolved monosaccharide analysis in seawater using 2-amino benzamide and 2-amino pyrazine as pre-column derivatization reagents.
Talanta
November 2021
Dokuz Eylül University, Institute of Marine Sciences and Technology, Inciralti, 35340, Izmir, Turkey.
Two reversed-phase HPLC methods for molecular analysis of dissolved free monosaccharides in seawater were investigated comparatively by optimizing chromatographic separations and pre-column derivatization reactions. Monosaccharides derivatized with 2-amino benzamide or 2-amino pyrazine, and reduced with 2-picoline borane or 2-dimethylamino borane. According to results of optimization, separation performance, and detection limits, 2-amino benzamide method gave better results than 2-amino pyrazine method.
View Article and Find Full Text PDFEnantioselective and simultaneous determination of lactate and 3-hydroxybutyrate in human plasma and urine using a narrow-bore online two-dimensional high-performance liquid chromatography system.
J Sep Sci
March 2018
Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan.
For the enantioselective and simultaneous analysis of lactate and 3-hydroxybutyrate, a validated online two-dimensional high-performance liquid chromatography system using 4-nitro-7-piperazino-2,1,3-benzoxadiazole as a fluorescent derivatization reagent has been developed. For the reversed-phase separation in the first dimension, a Capcell Pak C18 ACR column (1.5 × 250 mm, particle size 3 μm) was used, and the target fractions were isolated by their hydrophobicity.
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