scholarly journals A Simple Colorimetric Method to Quantify Total Fecal Oil Using Oil-soluble Dyes in Laboratory Animals and Its Correlation with Liquid Chromatography–Mass Spectrometry Analysis

2018 ◽  
Vol 34 (5) ◽  
pp. 623-626 ◽  
Author(s):  
Yura JANG ◽  
Jeongae LEE ◽  
Hesson CHUNG
Keyword(s):  
Mass Spectrometry ◽  
Liquid Chromatography ◽  
Colorimetric Method ◽  
Mass Spectrometry Analysis ◽  
Laboratory Animals ◽  
Liquid Chromatography Mass Spectrometry ◽  
Spectrometry Analysis ◽  
Chromatography Mass Spectrometry

scholarly journals Liquid chromatography–mass spectrometry analysis of dyes formed by in situ oxidative methods then purified by absorption and extraction from hair wefts

2020 ◽  
pp. 174751982097862
Author(s):  
M John Plater ◽  
Andrea Raab
Keyword(s):  
Mass Spectrometry ◽  
Liquid Chromatography ◽  
Complex Mixture ◽  
Ammonium Salts ◽  
Mass Spectrometry Analysis ◽  
Liquid Chromatography Mass Spectrometry ◽  
Spectrometry Analysis ◽  
Chromatography Mass Spectrometry ◽  
Didecyldimethylammonium Chloride

The dye mixtures formed from three commercial hair colour formers were purified by absorption onto human hair wefts, washed and dried, extracted with dichloromethane:trifluoroacetic acid (75:25) and then analysed by liquid chromatography–mass spectrometry. Only 1–2 dyes were identified from each complex mixture of commercial aromatic amines along with a broad UV absorption mainly consisting of mixtures of quaternary ammonium salts from shampoos and some surfactants. Mecetronium ethyl sulfate and didecyldimethylammonium chloride were the main ammonium salts.

scholarly journals LIQUID CHROMATOGRAPHY–MASS SPECTROMETRY ANALYSIS OF FRUITS OF AN ECONOMICALLY IMPORTANT PLANT SCHISANDRA CHINENSIS BAIL. FROM CHINA AND EAST RUSSIA

2018 ◽  
Vol 11 (9) ◽  
pp. 65
Author(s):  
Luferov An ◽  
Kartashova Nv ◽  
Strelyaeva Av ◽  
Kuznetcov Rm
Keyword(s):  
Mass Spectrometry ◽  
Liquid Chromatography ◽  
Mass Spectra ◽  
Mass Spectrometry Analysis ◽  
Schisandra Chinensis ◽  
Liquid Chromatography Mass Spectrometry ◽  
Spectrometry Analysis ◽  
Chromatography Mass Spectrometry ◽  
East Russia ◽  
Phytochemical Constituents

Objective: The study was carried out with an objective to characterize the possible bioactive phytochemical constituents from fruits of Schisandra chinensis Bail. by liquid chromatography–mass spectrometry analysis.Methods: Plant material was collected from Schisandra chinensis during August–October. The dried plant fruits were extracted with solvents using ethanol 95% extractor. The results of chromatography–MS analysis performed on the instrument Agilent Technologies established the presence of major and minor components. It was conducted a qualitative and quantitative comparison of infusions using software ChemStationE 02.00 and full library of mass spectra NIST 05.

scholarly journals Liquid chromatography–mass spectrometry analysis of cationic aniline dyes from the Technical University of Dresden Historical Collection of Dyes

2020 ◽  
Vol 44 (5-6) ◽  
pp. 326-335
Author(s):  
Michael John Plater ◽  
Andrea Raab ◽  
Horst Hartmann
Keyword(s):  
Mass Spectrometry ◽  
Liquid Chromatography ◽  
Complex Mixture ◽  
Mass Spectrometry Analysis ◽  
Liquid Chromatography Mass Spectrometry ◽  
Spectrometry Analysis ◽  
Left Hand ◽  
Chromatography Mass Spectrometry ◽  
Two Samples ◽  
Aniline Dyes

Liquid chromatography–mass spectrometry has been used to analyse a range of cationic aniline dyes from the 19th century. Mauveine from the Chandler museum is used as a standard for comparison. This consists of a typical W. H. Perkin mixture of mauveine A and B. Mauveine from a historic collection in Dresden is different and consists of mainly mauveine A and a monomethyl mauveine chromophore. Possible synthetic routes and its significance are discussed. Three samples of phenylated rosanilines have been analysed, and a list of 19 possible components compiled. An analysis by liquid chromatography–mass spectrometry works well on this complex mixture giving clear information on retention times and accurate mass molecular weights. Mono-, di- and triphenylrosanilines are present in two samples, and a third sample has mainly monophenylrosaniline. In each sample, a small amount of higher molecular weight homologues appear. The thin-layer chromatography plate, from left to right, has fuchsin or rosaniline then mono-, di- and triphenylrosaniline. The two spots on the right-hand side are blue, and the two spots on the left-hand side are red.

Sign in / Sign up

Export Citation Format

Share Document