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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Furfural

  • IUPAC Name: furan-2-carbaldehyde
  • Molecular Formula: C5H4O2
  • CAS Registry Number: 98-01-1
  • InChI: InChI=1S/C5H4O2/c6-4-5-2-1-3-7-5/h1-4H
  • InChI Key: HYBBIBNJHNGZAN-UHFFFAOYSA-N

@ ChemSpider@ NIST@ PubChem

Citations 3

"Flow Injection Determination Of HMF [5-hydroxymethylfurfural] In Honey By The Winkler Method"
Fresenius J. Anal. Chem. 1991 Volume 340, Issue 4 Pages 250-252
F. Salinas, A. Espinosa Mansilla, and J. J. Berzas Nevado

Abstract: Honey (~10 g) was dissolved in water (50 ml), the solution was filtered and the filtrate (150 µL) was injected into the carrier stream (H2O) of a flow injection system (described with diagram). The stream was mixed sequentially with aqueous 10% p-toluidine (Winkler reagent) and barbituric acid solution and passed through a mixing coil. The absorbance was measured at 550 nm; first derivatives were also calculated by computer. The calibration graph was rectilinear up to 98 µg g-1 of HMF and the coefficient of variation (n = 10) was ± 3 and ± 2.4% at 3.8 µg mL-1 of HMF for the conventional and first derivative methods, respectively. Sampling frequency was 35 h-1; furfuraldehyde interfered.
Food Spectrophotometry Spectroscopy Computer Filter Interferences

"Differential Kinetic Determination Of Furfural And Vanillin By Flow Injection Analysis"
Microchem. J. 1987 Volume 35, Issue 1 Pages 120-124
P. Linares, M. D. Luque De Castro and M. Valcarcel*

Abstract: The simultaneous determination was achieved by a single injection of sample solution into a reagent stream (1.3 mL min-1) of aqueous 4-aminophenol solution in trichloroacetic acid. The stream was split into two channels with different geometrical and hydrodynamic characteristics which merged before passing through the detector flow cell. The Schiff bases of the aldehydes were formed at different rates and both were monitored at 390 nm. The calibration graphs were rectilinear from 0.5 to 6.0 µg mL-1 for individual determinations and 0.5 to 4.0 µg mL-1 for simultaneous determinations. A coefficient of variation (n = 11) of <2% was obtained with 2 µg mL-1 of each analyte. The separation of 2-furaldehyde from vanillin was also carried out.
Spectrophotometry Kinetic Tecator

"Determination Of Furfural In An Oscillating Chemical Reaction Using An Analyte Pulse Perturbation Technique"
Anal. Bioanal. Chem. 2005 Volume 384, Issue 6 Pages 1438-1443
Jinzhang Gao, Hongxia Dai, Wu Yang, Hua Chen, Dongyu Lv, Jie Ren, Lei Wang

Abstract: A rapid and convenient method for the determination of furfural is presented that is based upon sequential perturbation of the Mn(II)-catalyzed B-Z oscillating system with different amounts of furfural using a continuous-flow stirred tank reactor (CSTR). When the sample was injected, the change in the amplitude and/or period was linearly proportional to the logarithm of the concentration of furfural over the range 3 x 10^-8~1 x 10^-5 mol L-;1. This method gave a detection limit of 3 x 10^-9 mol L-;1 under optimum conditions. Finally, the possible mechanism of furfural perturbation in the oscillating reaction is discussed. When the furfural was injected into the Mn(II)-catalyzed B-Z oscillating system, the change in the amplitude and/or period was linearly proportional to the logarithm of the concentration of furfural over the range 3 x 10^-8~1 x 10^-5 mol L-;1, with a detection limit of 3 x 10^-9 mol L-;1 under optimum conditions.
Mixing chamber Continuously stirred tank reactor Optimization Detection limit Reaction mechanism