Evaluation of the Impact of Sulfobutylether7-β-Cydodextrin on the Liquid Chromatography-Mass spectrometry Analysis of Biological Samples Arising from In Vivo Pharmacokinetic Studies

2015 ◽  
Vol 104 (4) ◽  
pp. 1561-1562 ◽  
Author(s):  
Nathania J. Leong ◽  
Richard J. Prankerd ◽  
David M. Shackleford ◽  
Michelle P. Mcintosh
Keyword(s):  
Mass Spectrometry ◽  
Liquid Chromatography ◽  
Biological Samples ◽  
Mass Spectrometry Analysis ◽  
Pharmacokinetic Studies ◽  
Liquid Chromatography Mass Spectrometry ◽  
Spectrometry Analysis ◽  
Chromatography Mass Spectrometry ◽  
The Impact

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.

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