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
Website: @unf

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Classification: Vegetable -> sugar cane -> syrup

Citations 3

"Multi-site Detection In Flow Analysis. 3. Periodate Tubular Electrode With Low Inner Volume As A Relocatable Detector"
Anal. Chim. Acta 1994 Volume 285, Issue 3 Pages 293-299
José A. Gomez Neto, Ana Rita A. Nogueira, H. Bergamin Filho and Elias A. G. Zagatto*, José L. F. Costa Lima and Conceição B. S. M. Montenegro

Abstract: The membrane sensor comprised 30% PVC, 63% o-nitrophenyl octyl ether and 7% tetra-octylammonium periodate, with an inner volume of 45 µL. Its position could be changed with use of an electronic commutator, to which were attached the working and Ag/AgCl reference electrodes. Two configurations are described. In one, used for the determination of glycerol, the sensor could be moved to either of two identical channels. Glycerol solution (30 µL) were injected into a reagent carrier of 3 mM NaIO4, 0.5 M Na2SO4, 0.1 M acetic acid and 0.1 M sodium acetate (0.5 ml/min). The carrier passed through a coiled reactor (1 m x 0.7 mm i.d.) to the sensor, where unconsumed periodate was measured. Calibration graphs were linear for 0.05-0.2% glycerol. The commutator was switched to the parallel channel a few s after the peak maximum was reached, thus the sampling rate of 100/h was not affected by the wash-out time. For sucrose, the sensor was moved to a position downstream in the same channel. Calibration graphs were linear for 0.1-0.5% sucrose. Glycerol was determined in soaps and detergents, and sucrose was determined in sugar cane juice and syrups.
Glycerol Sucrose Electrode Sensor Apparatus Detector

"Kinetic Determination Of Fructose In The Presence Of Glucose By Ion-selective Electrode - Flow Injection Analysis"
Fenxi Huaxue 1994 Volume 22, Issue 1 Pages 67-70
He, Y.M.;Pan, C.H.;Xing, S.B.

Abstract: The method described by Gritzapis et al. (Anal. Abstr., 1989, 51, 12D74) based on the different reaction rates of fructose and glucose with 2,4-dinitrophenolate (I), was used to determine fructose in the presence of glucose. A FIA system (diagram given) consisted of a pump to deliver the carrier stream, sample and reagent injectors, a reaction coil (4 m x 0.5 mm i.d.), a PVC-I working electrode, a reference SCE, a flow cell and a pH S-4 intelligent pH meter. A 150 µL portion of the sample solution was injected into the carrier solution of 5 µM-I in 2 M NaOH and reacted with 0.2 or 2 mM I in 2 M NaOH at 30°C for 100 s. The potential was measured at intervals of 5 s. The recoveries ranged from 93.1-110.9%. The RSD (n = 6) was 5% when determining fructose in fructose/glucose syrup.
Fructose Electrode Electrode Kinetic

"Determination Of Reducing Sugars Separated By High Performance Liquid Chromatography With Post-column Coloration"
Sucr. Fr. 1988 Volume 129, Issue NA Pages 117-124
Deruy, G.;Lescure, J.P.

Abstract: A mixture of reducing sugars (from, e.g., sugar beet, cane syrup or molasses) was analyzed on a column of Bio-Rad HPX 87 C cation-exchange resin (Ca(II) form) with aqueous Ca acetate as mobile phase and post-column reaction with 4-aminobenzohydrazide; detection was at 410 nm. Calibration graphs were rectilinear for 50 to 2000 mg L-1 of fructose, glucose, galactose or lactose. Up to 10 g L-1 of sucrose (or other non-reducing sugar) could be determined with use of a Bio-Rad HPX 87 H cation-exchange column (H+ form) after the separation column.
Sugars, reducing HPLC Spectrophotometry Post-column derivatization