(Invited) Liquid Chromatography/Mass Spectrometry Analysis of Effluent Water from Perfluoroalkylsulfonic Acid (PFSA) Membrane Degradation Studies at Accelerated Durability Test Conditions

2020 ◽  
Vol 98 (9) ◽  
pp. 377-394
Author(s):  
Michael Yandrasits ◽  
Andrei Komlev ◽  
Kyle Kalstabakken ◽  
Matthew Lindell ◽  
Michael Kurkowski
Keyword(s):  
Mass Spectrometry ◽  
Liquid Chromatography ◽  
Mass Spectrometry Analysis ◽  
Liquid Chromatography Mass Spectrometry ◽  
Effluent Water ◽  
Membrane Degradation ◽  
Durability Test ◽  
Spectrometry Analysis ◽  
Test Conditions ◽  
Accelerated Durability Test

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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