The effects of sample preparation and chromatographic method differences on the
classification and recovery of metabolic biomarkers from UPLC‐MS measurements on urine …

Currently, liquid chromatography-mass spectrometry (LC-MS) is one of the most important
analytical technologies for detecting hundreds of metabolites in the field of metabolomics. A …

We assessed the quantitative performances of a classical method for profiling urinary
organic acids: ethyl acetate extraction/oxime-trimethylsilyl derivatization/GC-MS. Twenty …

The abnormal organic acids in urine are closely related with physiological metabolism. To
determinate the low-molecular-mass metabolites in human biological fluids, although there …

A method for the determination of the organic acids directly in the urine employing
derivatization with trimethyloxonium tetrafluoroborate as a methylating agent and sequential …

A computer system (MSSMET), using methylene unit retention indices for an off‐line reverse
library search analysis of selected ion chromatograms from gas‐liquid chromatographic …

A multipurpose sampler (Gerstel MPS), designed for liquid large volume, gaseous and
headspace samples was used for the GC–MS analysis of organic volatiles in human urine …

A new combined gas chromatography and mass spectrometry (GC–MS) method has been
developed suitable for the urine sample treatment in aqueous phase with ethyl …

Background: Urinary organic acids are water-soluble intermediates and end products of the
metabolism of amino acids, carbohydrates, lipids, and a number of other metabolic …

A novel derivatization method for gas chromatography/mass spectrometry (GC/MS)-based
metabolomics was developed, based on solid-phase analytical derivatization (SPAD) with …