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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Electrode

Classification: Electrode -> ion selective -> chloride

Citations 37

"Determination Of Chloride By Multisyringe Flow Injection Analysis And Sequential Injection Analysis With Potentiometric Detection"
Anal. Chim. Acta 2002 Volume 467, Issue 1-2 Pages 25-33

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A. Andrade-Eiroa, J. A. Erustes, R. Forteza, V. Cerdá and J. L. F. C. Lima

Abstract: This paper reports for the first time a multisyringe flow injection analysis (MSFIA) method with potentiometric detection for the automated determination of chloride in waters. The methodology developed was applied to the determination of chloride in mineral, tap and waste waters and the results achieved were compared with those obtained by a potentiometric sequential injection analysis (SIA) method reported in the literature. When Mohr titration was carried out for validating the results offered by both techniques, no significant differences were found. The linear ranges were between 6 and 3500 µg L-1 for MSFIA and 10 and 3500 mg L-1 for SIA; the UPAC limits of detection were 2.7 mg L-1 for MSFIA and 1.6 mg L-1 for SIA; reproducibility was ~0.8% for MSFIA and 0.4% for SIA and, sampling rates were of 30 and 15 injections h-1 for MSFIA and SIA, respectively. These results provide evidence of superior performance of MSFIA over SIA for the determination of chloride. (C) 2002 Elsevier Science B.V. All rights reserved.
Chloride Water Mineral Farm Multisyringe Method comparison Sequential injection

"Potentiometric Flow Injection Determination Of Chloride"
Anal. Chim. Acta 1983 Volume 151, Issue 1 Pages 77-84

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Marek Trojanowicz and Wojciech Matuszewski

Abstract: A Cl--selective electrode was prepared from a silver - AgCl electrode by surface oxidation of the silver in 0.5 M FeCl3. A double-junction SCE with a 1 M NH4NO3 bridge was the reference electrode. In the low concentration. range (15 to 50 µM), the Cl- concentration. was directly proportional to the electrode potential. In the Nernstian response region, the dispersion in the flow system influenced the lower limit of the rectilinear calibration range whereas in the sub-Nernstian region it influenced the slope of the electrode response curve. The method was applied in the determination of Cl- in river water. The results agreed well with those obtained by titration, with standard deviations of ~1.5 mg L-1 at the level of 40 mg l-1
Chloride River Dispersion

"Coated Tubular Solid-state Chloride-selective Electrode In Flow Injection Analysis"
Anal. Chim. Acta 1986 Volume 179, Issue 1 Pages 407-417

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J. F. Van Staden

Abstract: The construction of the electrode is described and illustrated. Response times are 3 to 4 s and the range is 5 to 5000 mg L-1 for 30 µL samples. Mean recoveries of 67 and 114 mg L-1 are 97.8 and 98.9%, respectively, with coefficient of variation in the analysis of 16 water samples being <1.7% (n = 15). The results agree well with those obtained spectrophotometrically.
Chloride Environmental Apparatus Method comparison

"Simple Antilog Converter For Conventional And Flow Injection Measurements With Ion-selective Electrodes"
Anal. Chim. Acta 1988 Volume 207, Issue 1-2 Pages 325-330

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Marek Trojanowicz and Tadeusz Krawczyski vel Krawczyk, Wodzimierz Augustyniak

Abstract: A simple antilog. converter based on an antilog. amplifier is described. In potentiometric measurements it produced an output voltage which depended rectilinearly on the concentration. of the sensed species over two orders of magnitude. Signals obtained in measurements with Cl-, F-, K+ and Cu(II) ion-selective electrodes ranged from 1.0 to 10.0 V. The converter was used for flow injection potentiometry within one concentration. decade, but its sensitivity depended on the dispersion in the flow system.
Chloride Copper(II) Fluoride Potassium Apparatus Computer Electronics

"Response Time Phenomena Of Coated Open-tubular Solid-state Silver Halide-selective Electrodes And Their Influence On Sample Dispersion In Flow Injection Analysis"
Anal. Chim. Acta 1992 Volume 261, Issue 1-2 Pages 381-390

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Jacobus F. van Staden

Abstract: A comparative study has been made of the response times of coated open-tubular Ag membrane electrodes selective towards Cl-, Br- or I- (cf. Ibid., 1986, 179, 407) as they affect the throughput of flow injection analysis systems. The tubular indicator electrodes were used in conjunction with an Orion 90-02 double-junction reference electrode with 10% KNO3 solution in its outer chamber. The digitized signals were smoothed by applying the DS (data sets) Cat and Smooth operations of the ASYST software; typical background-corrected graphs for the flow injection measurement of halides (10 to 5000 mg l-1) are reproduced. Examination of the leading edges of the various peaks showed that their rate of response was independent of concentration. and did not significantly decrease the sampling rate, although the response of the Br- electrode at the initial peak-formation stages near the baseline was slightly slower than that of the others. The rate of response of the trailing edges was mainly responsible for the sampling rate in an optimized flow injection system, and the I- electrode showed a memory effect, which was largely responsible for the low sampling rate of this system compared with similar systems with the other two electrodes. The contribution of the memory effect or response time phenomena of coated open-tubular solid state chloride-, bromide-, and iodide-selective electrodes on the anal. output in flow injection systems are presented for concentration. ranges between 10 and 5000 mg L-1. The rate of response for the leading edges of all three electrodes due to electrode properties are independent of concentration. and do not contribute significantly to any decrease in sampling rate, although the rate of response of the bromide-selective electrode flow injection analysis (FIA) system seems to be slightly slower than the other two electrode systems at the initial peak-formation stages near the base line. The rate of response for the tailing edges of the different electrodes due to electrode properties is mainly responsible for the sampling rate obtained in an optimized FIA-ISE system. The memory effect of the iodide-selective electrode is mainly responsible for the fact that the sampling rate of this system is very much lower than the sampling rate obtained for similar systems with the other two electrodes. For the bromide-selective electrode system, the slower rate of response due to electrode properties at the tailing edges (especially with high concentrations of bromide) than that of the chloride-selective electrode, contributes mainly to a lower sampling output for the bromide-selective electrode-FIA system when compared with the chloride electrode system.
Bromide Chloride Iodide Optimization Signal processing Dispersion

"Trioctyltin Chloride As Carrier For A Chloride-selective Electrode In Flow Injection Potentiometry"
Anal. Chim. Acta 1993 Volume 278, Issue 2 Pages 227-232

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Peter C. Hauser*

Abstract: Trioctyltin chloride was dissolved in THF with bis-(1-butylpentyl)adipate and PVC, then an ISE was constructed with the membrane solution and a Ag wire. The ISE was incorporated into a flow injection cell [cf. Analyst (London), 1988, 113, 1551] and FIA was carried out to determine chloride concentration. in standard solution The inherent instability of the trioctyltin chloride was eliminated in the flow injection mode. Calibration graphs were rectilinear from 1-100 mM chloride and the detection limit was 0.1 mM; no RSD is given.
Chloride

"Differential Flow Injection Potentiometry"
Anal. Chim. Acta 1995 Volume 311, Issue 2 Pages 175-181

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Ivelin Rizov* and Liliana Ilcheva

Abstract: Flow injection potentiometric methods using two different ISE placed in series are described for the simultaneous determination of (i) nitrate and chloride and (ii) nitrate and ammonium. The flow injection manifold for the determination of nitrate and chloride consisted of a nitrate ISE separated from a chloride ISE by a reaction coil of 254 cm x 0.51 mm i.d. A sample volume of 60 µL was injected into a 0.04 M Na2SO4 carrier stream (6.3 ml/min). The nitrate concentration was determined using the chloride ISE as a reference electrode and vice versa. The RSD (n = 13) for the determination of 0.1 mM nitrate and 1 mM chloride were 1.1 and 0.9%, respectively. A similar manifold is described for the determination of nitrate and ammonium using nitrate and ammonium ISE separated by a reaction coil of 284 cm x 0.51 mm i.d. The RSD (n = 12) for the determination of nitrate and ammonium in waste water from a urea production plant were 1.1 and 0.9%, respectively.
Ammonium Chloride Nitrate Industrial Waste Dual detection

"Oxidative Removal Of Interferences In Flow Injection Potentiometric Determination Of Chloride"
Talanta 1989 Volume 36, Issue 8 Pages 811-815

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