University of North Florida
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Stuart Chalk, Ph.D.
Department of Chemistry
University of North Florida
Phone: 1-904-620-1938
Fax: 1-904-620-3535
Email: schalk@unf.edu
Website: @unf

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Commercial product

Classification: Commercial product -> surfactant

Citations 2

"Determination Of Alkylamines By High Performance Liquid Chromatography With Post-column Fluorescence Derivatization"
Anal. Chim. Acta 1988 Volume 212, Issue 1-2 Pages 155-163
I. R. C. Whiteside and P. J. Worsfold, E. H. McKerrell

Abstract: For the determination of primary alkylamines in the presence of secondary alkylamines, samples were subjected to HPLC on a column (15 cm x 4.6 mm) of a styrene - divinylbenzene copolymer (5 µm) with methanol as mobile phase (0.5 mL min-1). Primary amines in the eluate were derivatized at 45°C with 58 mM phthalaldehyde and 58 mM 2-mercaptoethanol in ethyl acetate (0.5 mL min-1), the solution was mixed with ethyl acetate (0.5 mL min-1) in two knitted PTFE tubes (100 cm x 0.8 mm) and the fluorescence was measured at 431 nm in a 7 µL flow cell (excitation at 340 nm). The detection limit of decylamine was 0.18 mM. Procedures are also described for the selective determination of secondary amines [by derivatization with 7-chloro-4-nitrobenzofurazan and fluorimetry at 525 nm (excitation at 480 nm)] after masking of primary amines and for non-selective determination of primary and secondary amines. The procedures were used to analyze Synprolam 35DM surfactant, containing 98% of tertiary amines and 1% each of primary and secondary amines.
Amines, alkyl HPLC Fluorescence Heated reaction Post-column derivatization Knotted reactor

"A Comparative Evaluation Of Continuous-flow Fast Atom Bombardment And Ion Spray Ionization Techniques For The Simultaneous Determination Of Alkyltrimethylammonium Surfactants By Mass Spectrometry"
Rapid Commun. Mass Spectrom. 1998 Volume 12, Issue 6 Pages 281-284
Silvia A. Coran *, Massimo Bambagiotti-Alberti, Valerio Giannellini, Gloriano Moneti, Giuseppe Pieraccini, Andrea Raffaelli

Abstract: This study compares the performances of two mass-spectrometric ionization techniques, i.e. fast-atom bombardment (FAB) and ion-spray ionization (ISI), in the simultaneous quantitation of dodecyl-, tetradecyl- and hexadecyltrimethylammonium halides in aqueous media. Continuous-flow FAB and flow injection analysis (FIA)-ISI, both in selected-ion monitoring and selected-reaction monitoring modes, were evaluated. Quantitation was performed by dilution with deuterium-labeled homologues synthesized by a simple procedure. A comparison of the data indicated FIA-ISI as the more sensitive (limit of detection = 10 ppb). Good linearity, precision and accuracy were obtained by the tested techniques in the concentration. range 0.125-4.0 ng µL-1. Hair softeners, commercial surfactant mixtures and hematol. lysing reagents were used as test samples.
Surfactants, alkyltrimethylammonium Mass spectrometry Mass spectrometry Method comparison