Laser mass spectrometry of diquaternary ammonium salts

1984 ◽  
Vol 56 (6) ◽  
pp. 866-871 ◽  
Author(s):  
Tuan A. Dang ◽  
Robert J. Day ◽  
David M. Hercules
Keyword(s):  
Mass Spectrometry ◽  
Ammonium Salts ◽  
Laser Mass Spectrometry ◽  
Diquaternary Ammonium

Thermospray Mass Spectrometry of Diquaternary Ammonium Salts

1984 ◽  
Vol 23 (11) ◽  
pp. 892-893 ◽  
Author(s):  
Günter Schmelzeisen-Redeker ◽  
Ulrich Giessmann ◽  
Franz-Wilhelm Röllgen
Keyword(s):  
Mass Spectrometry ◽  
Ammonium Salts ◽  
Thermospray Mass Spectrometry ◽  
Diquaternary Ammonium

Solid state chemical ionization for characterization of organic compounds by laser mass spectrometry

Talanta ◽  
1989 ◽  
Vol 36 (1-2) ◽  
pp. 117-124 ◽  
Author(s):  
Kesagapillai Balasanmugam ◽  
Somayajula Kasi Viswanadham ◽  
David M. Hercules
Keyword(s):  
Mass Spectrometry ◽  
Solid State ◽  
Organic Compounds ◽  
Chemical Ionization ◽  
Laser Mass Spectrometry ◽  
State Chemical

Nano- and Femtosecond Laser Mass Spectrometry of Organic Molecules and Cluster

2009 ◽  
Author(s):  
Osama Abdel Rahman ◽  
Jürgen Grotemeyer ◽  
Tetuso Iguchi ◽  
Kenichi Watanabe
Keyword(s):  
Mass Spectrometry ◽  
Femtosecond Laser ◽  
Organic Molecules ◽  
Laser 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.

ChemInform Abstract: BASE-PROMOTED REACTIONS OF BICYCLIC MONO- AND DIQUATERNARY AMMONIUM SALTS

1974 ◽  
Vol 5 (18) ◽  
pp. no-no
Author(s):  
S. H. PINE ◽  
J. CHENEY ◽  
B. CATTO ◽  
J. D. PETERSEN
Keyword(s):  
Ammonium Salts ◽  
Diquaternary Ammonium
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