Search
Search Results
-
Nitrogen stable isotope analysis of sulfonamides by derivatization-gas chromatography-isotope ratio mass spectrometry
The continuous introduction of micropollutants into the environment through livestock farming, agricultural practices, and wastewater treatment is a...
-
Ethylamine as new derivatization reagent differentiating reducing from non-reducing saccharides
Typical derivatization reagents for saccharides in high-performance thin-layer chromatography, like 2-naphthol sulfuric acid, aniline diphenylamine...
-
Isoniazid derivatization strategy of carboxyl-containing metabolites for LC-MS/MS-based targeted metabolomics
Metabolomics is a biochemical analysis tool for identifying metabolic phenotypes and used to reveal the pathogenic mechanisms of disease and to...
-
Comparing derivatization reagents for quantitative LC–MS/MS analysis of a variety of vitamin D metabolites
The present study systematically compares the sensitivity and selectivity of the analysis of multiple vitamin D metabolites after chemical...
-
Determination of aliphatic aldehydes C1–C5 with headspace solid phase microextraction in tap water: derivatization in-solution versus on-fiber
Short-chain aliphatic aldehydes are hazardous environmental pollutants and important biomarkers of various diseases. The development of effective...
-
Low-background interference detection of glyphosate, glufosinate, and AMPA in foods using UPLC-MS/MS without derivatization
The abuse of herbicides has emerged as a great threat to food security. Herein, a low-background interference detection method based on UPLC-MS was...
-
Molecularly imprinted dispersive micro solid-phase extraction and tandem derivatization for the determination of histamine in fermented wines
Histamine causes allergic reactions and can serve as an indicator for assessing food quality. This study designed and developed a dispersive micro...
-
In situ droplet-based on-tissue chemical derivatization for lipid isomer characterization using LESA
In this work, we present an in situ droplet-based derivatization method for fast tissue lipid profiling at multiple isomer levels. On-tissue...
-
Determination of phosphate in food based on molybdenum yellow derivatization coupled with resonance Rayleigh scattering method
This paper proposed a rapid, selective and sensitive molybdenum yellow derivatization coupled with Resonance Rayleigh scattering (MYD-RRS) method for...
-
β-Irradiation in the presence of 1,3-dialkylimidazolium ionic liquids causes covalent cellulose derivatization with simultaneous nitrogen incorporation
β-Irradiation (“e-beaming”) as well as swelling in ionic liquids, each process by itself, are common pretreatments in biorefinery scenarios. A...
-
Deep profiling of plasmalogens by coupling the Paternò–Büchi derivatization with tandem mass spectrometry
Plasmalogens are a special class of glycerophospholipids characterized by a vinyl ether bond (-C = C-O-) at the sn -1 position of the glycerol...
-
Structural characterization of N-acyl-homoserine lactones from bacterial quorum sensing using LC–MS/MS analyses after Paternò-Büchi derivatization in solution
Bacterial quorum sensing is a chemical language allowing bacteria to interact through the excretion of molecules called autoinducers, like N -acyl-homo...
-
In-Capillary Chiral Derivatization of Amino Acids
AbstractThe capabilities of in-capillary chiral derivatization of amino acids using ortho -phthalaldehyde and N -acetyl-L-cysteine are discussed. The...
-
Determination of Phenolic Compounds in Hypericum perforatum L. Aqueous Extracts by Gas Chromatography–Mass Spectrometry Using Solid-Phase Analytical Derivatization
AbstractWe studied the gas chromatographic determination and identification of phenolic compounds in aqueous extracts of St. John’s wort ( Hypericum...
-
Derivatization procedure of estradiol with a combination of MPDNP-F and 4-dimethylaminopyridine to generate product ion containing estradiol-skeleton for reliable determination of its serum/plasma concentrations by LC/ESI-MS/MS
The quantification of serum/plasma estradiol (E 2 ) is useful for the diagnosis, pathological analysis, and monitoring of the therapeutic efficacy of...
-
Stability of sample extracts of vitamin D3 metabolites after chemical derivatization for LC–MS/MS analysis
Liquid chromatography/tandem mass spectrometry (LC–MS/MS) is widely used to determine vitamin D 3 metabolites in biological samples. The ionization...
-
A novel reagent pre-column derivatization method for UHPLC-MS/MS to determine four α-dicarbonyl compounds in beer
The detection and analysis of α-dicarbonyl compounds (α-DCs) in food can guide the daily diet of patients with various chronic diseases. However,...
-
A Possible Method for the Derivatization of Cyclic Sulfides with Polydialkylsiloxanes for Subsequent Study by “Soft” Ionization Mass Spectrometry
AbstractIn develo** methods for the preliminary chemical modification of nonpolar sulfur-containing compounds for their subsequent effective study...
-
Plasma treatment of cellulose: investigation on molecular changes using spectroscopic methods and chemical derivatization
One interesting and sustainable method for the treatment of a large variety of surfaces is the atmospheric plasma technology. The use of plasma...
-
Spectral and theoretical analysis of derivatives of 1,2,3,3-tetramethyl-3H-indolium iodide (TMI), a highly selective derivatization reagent of cyanide, and their utility for the analysis of cyanide concentrations in beverages
We develop a specific derivatization gas chromatography–mass spectrometry (GC–MS) method for cyanide using 1,2,3,3-tetramethyl-3 H -indium iodide as...
