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Updated: Jun 28, 2026

Dynamic Electrochemical Measurement of Chloride Ions
Published on: February 5, 2016
Continuous flow determination of chloride in the non-linear response region with a tubular chloride ion-selective
H Hara1, Y Wakizaka, S Okazaki
1Laboratory of Chemistry, Faculty of Education, Shiga University, Otsu, Shiga 520, Japan.
Abstract:
A microcomputer-aided continuous-flow system was constructed for the determination of chloride in the non-linear electrode-response region from 10 to 0.1 mg/l. Interpolation by spline function was used to calculate the concentration from the measured potential. As few as four points were enough to obtain a practical calibration curve, plotted as Evs. log c. The interferences of bromide and iodide (at weight ratios <0.1 to chloride) could be removed by adding colloidal silver chloride continuously in the flow stream. Analysis of rain and snow containing 0.07-8.8 mg/l. chloride showed fairly good agreement with that by ion-chromatography.
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