Date of Award

Fall 1999

Document Type

Thesis

Degree Name

Master of Science in Environmental Science - (M.S.)

Department

Chemical Engineering, Chemistry and Environmental Science

First Advisor

Barbara B. Kebbekus

Second Advisor

Richard B. Trattner

Third Advisor

Kenneth Rudolph Farmer

Abstract

This research was undertaken to determine which metals would be suitable to be used as electrodes for the determination of the concentration of chlorine in aqueous solutions at various pH levels. Platinum, palladium, bismuth, copper and silver electrodes were constructed and tested to determine their applicability for measuring the concentration of chlorine in drinking water, waste water treatment plant effluent, and swimming pools. Buffer solutions were used which varied in pH from 7 to 8, and in cHorine concentration from 0 to 10 ppm. In addition, the potential variation over time was observed for each electrode in the solutions.

Platinum, palladium, and copper were found the most appropriate metals for the potentiometric determination of chlorine. The data obtained using these electrodes conformed with Nernstian theory. In addition, the response for palladium appeared to be affected by a variation of pH.

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