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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Triethylamine

  • IUPAC Name: N,N-diethylethanamine
  • Molecular Formula: C6H15N
  • CAS Registry Number: 121-44-8
  • InChI: InChI=1S/C6H15N/c1-4-7(5-2)6-3/h4-6H2,1-3H3
  • InChI Key: ZMANZCXQSJIPKH-UHFFFAOYSA-N

@ ChemSpider@ NIST@ PubChem

Citations 5

"Flow Injection Procedure For The Determination Of Tertiary Amines In Water And Seawater Using Chemiluminescence Detection"
Analyst 1989 Volume 114, Issue 12 Pages 1659-1661
J. Steven Lancaster, Paul J. Worsfold and A. Lynes

Abstract: Sample was injected into a stream of borate buffer (pH 11.0), which merged first with 1 mM rhodamine B and then with 1.64 mM NaOCl (all at 1 mL min-1); detection of chemiluminescence was by a photomultiplier tube. The calibration graph for triethylamine was rectilinear for 0.2 mM in water and 0.1 mM in seawater. Coefficients of variation were generally 2% (n = 5). The method can also be used to determine trimethyl- and tripropyl-amine. Quenching of the chemiluminescence occurs in the presence of a 10-fold excess of diethylamine or ethylamine.
Environmental Sea Chemiluminescence Buffer Quenching Indirect

"A Novel Assembly For Perfluorinated Ion-exchange Membrane-based Sensors Designed For Electroanalytical Measurements In Nonconducting Media"
Electroanalysis 1998 Volume 10, Issue 14 Pages 942-947
Rosanna Toniolo, Nicola Comisso, Gino Bontempelli *, Gilberto Schiavon, Stefano Sitran

Abstract: A perfluorinated ion-exchange membrane-based sensor suitable for electroanal. measurements in electrolyte-free media is described, which was assembled following a novel design enabling an easier preparation procedure. It was fabricated by inserting the terminal portion of a working Pt wire electrode into a Nafion tubing of suitable diameter and welding the wire thus wrapped to the bottom of a cell body by an insulating epoxy resin. The remainder upper part of the working electrode was covered by a Teflon tubing to avoid the elec. contact with the internal electrolyte introduced into the cell body, which was equipped with a counter and a reference electrode. As a result of this configuration, the actual working-electrode surface is the wire circumference contacted by the polyelectrolyte material at the bottom of the assembly which is exposed to the sample. The performance of this sensor was tested by cyclic voltammetry, amperometric monitoring and flow injection analysis for the electroanal. of a series of prototype analytes either dissolved in electrolyte-free water (H2O2, hydroquinone, ferricyanide, I- and Br-) or present in N2 atmospheres (triethylamine and O2). Detection limits for these analytes were estimated (s = 3), together with the corresponding ranges within which the responses display a linear dependence on the analyte concentration. The novel assembly is suitable only for the anal. in electrolyte-free liquid samples, while for the anal. of gaseous atmospheres, especially for flowing gases, ion-exchange membrane sensors prepared by the more usual procedure based on the use of working electrode materials embedded into a moist polyelectrolyte membrane should be preferred.
Sensor Ion exchange Electrode Electrode Nafion membrane Apparatus Detector

"Spectrophotometric Detection For Flow Injection Analysis Of Tertiary Alkylamines In Terms Of The Intermolecular Charge-transfer Interaction With Iodine"
Bull. Chem. Soc. Jpn. 1991 Volume 64, Issue 8 Pages 2613-2615
Bunji Uno,Kiho Nakajima and Satoshi Kawai

Abstract: Sample of triethylamine (I), tripropylamine (II), or tributylamine (III) in a carrier stream of CH2Cl2 (1 mL min-1) was merged with a 1 mL min-1 stream of a 10 mM solution of I in CH2Cl2 (flow diagram given). The absorbance of the reaction mixture was measured at 290 nm. The detection limit was 1.36 ng for I, 1.63 ng for II and 2.63 ng for III and calibration graphs were rectilinear. The method should be suitable for use as a post-column detector in HPLC analysis.
Spectrophotometry Organic phase detection Optimization

"Flow Jnection Technqiues. Monitoring Chemiluminescent Reactions By Flow Injection Analysis"
Proc. Anal. Div. Chem. Soc. 1979 Volume 16, Issue 9 Pages 262-264
J. L. Burguera and Alan Townshend

Abstract: The performance of an app. for monitoring chemiluminescent reactions by flow injection analysis was described using the chemiluminescence that occurs when Et3N is oxidized by BzOOH in Me2CO and the Co-catalyzed oxidation of luminol as examples. Efficient mixing and not too rapid removal of analyte from the cell are necessary. Thus the detection limits were 2.5 µg Et3N/0.5 mL sample and 10^-6 ppm Co.
Bioluminescence Chemiluminescence Apparatus Indirect Catalysis

"Determination Of Trimethylamine In Fish By Flow Injection Analysis"
Quim. Anal. 1994 Volume 13, Issue 2 Pages 78-81
Leon, A.;Chica, A.;Garcia Raurich, J.;Centrich, F.

Abstract: AOAC method 971.14 for the cited analysis was automated using FIA. Sample solution (40 µL) was injected into a carrier stream of water (0.64 ml/min) and merged with a stream of aqueous 30% formaldehyde (0.35 ml/min) before passing through a mixing coil (30 cm x 0.5 mm i.d.). The stream was merged with aqueous 30% KOH (0.35 ml/min) and mixed in a coil (30 cm x 0.5 mm i.d.). water was pumped to a displacement flask (1.74 ml/min) from which CHCl3 was drawn and merged with the stream before passing through an extraction coil followed by a phase separator. The organic phase (0.84 ml/min) was collected by aspiration and mixed with a stream of picric acid in CHCl3 (0.2 mg/ml; 0.84 ml/min) in a coil (30 cm x 0.5 mm i.d.). Colorimetric detection was performed at 410 nm. Results correlated with those obtained using the official method, although the automated method provided systematically lower results as a result of kinetic removal of interferents. The method was applied to fish extracted with 5% trichloroacetic acid (discussed).
Marine Spectrophotometry Sample preparation Interferences Standard method Phase separator Method comparison Organic phase detection