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: Industrial -> electrolyte

Citations 3

"Determination Of Cyanide By A Flow Injection Analysis-atomic Absorption Spectrometric Method"
Analyst 1998 Volume 123, Issue 10 Pages 2103-2107
A. V. López Gómez and J. Martínez Calatayud

Abstract: A new flow injection analysis (FIA) procedure is proposed for the indirect atomic absorption spectrometric determination of cyanide. The FIA manifold is based on the insertion of the sample into a distilled water carrier, then the sample flows through a solid phase reactor filled with Ag iodide entrapped in polymeric resin beads. The calibration graph is linear over the range 0.2-6.0 mg L-1 of cyanide (correlation coefficient 0.9974), the detection limit is 0.1 mg L-1, the sample throughput is 193 h-1 and the relative standard deviation is 0.8%. The method is simple, quick and more selective than other published FIA procedures. The reproducibility obtained by using different solid phase reactors and solutions is in the range 2.2-3.1% (relative standard deviation). The method was applied to the determination of cyanide in commercial samples such as pharmaceutical formulations and industrial electrolytic baths.
Cyanide Spectrophotometry Solid phase reagent Indirect Resin Precipitation

"Ion-selective Electrode With Microprocessor-based Instrumentation For Online Monitoring Of Copper In Plant Electrolyte"
Anal. Chem. 1983 Volume 55, Issue 13 Pages 2071-2075
A. M. Bond, H. A. Hudson, P. A. Van den Bosch, F. L. Walter, and H. R. A. Exelby

Abstract: The flow-through cell and the microcomputer control used in the online monitoring of Cu in industrial electrolyte solution with use of a Cu(II)-selective electrode are illustrated and described. Ascorbic acid is added to the electrolyte to remove interference from, e.g., Fe(III). The system can monitor 0.1 mM to 0.5 M Cu. Calibration and detection of malfunctions are performed by using two calibration solution. Results show excellent agreement with those of AAS
Copper Electrode Computer Interferences Method comparison Process monitoring

"Flow Injection Determination Of Copper In Concentrated Electrolytes With Potentiometric Detection"
Chem. Anal. 1988 Volume 33, Issue 1 Pages 69-74
Krawczynski Vel Krawczyk, T.;Trojanowicz, M.A.;Hulanicki, A.

Abstract: A flow injection procedure is proposed for the detection of Cu in, e.g., refining electrolytes, by injection of a small volume (20 µL) of sample into a carrier stream (1.83 mL min-1) of 1 M citrate buffer adjusted to pH 3.0, to provide 100-fold dilution of the sample, and measurement of Cu with an ion-selective electrode. The citrate matrix masked any Fe present. For a 0.594 M Cu test solution, recovery was 99.3%.
Copper Electrode Potentiometry Interferences