Development and Evaluation of Electroanalytical Methods for Determination of Metal-Ion Concentrations in Water

摘要

This study was directed toward the development of electrochemical procedures that would be suitable for the on-site determination of the concentrations of some metal ions and halide ions. The methodology was based on semi-integral analysis for the qualitative identification and on stripping analysis for the quantitative determination of metal ions. Of the three electrode systems developed as a part of this project, two systems were found to be suitable for portable use. The overall system was found to be capable of determining silver, copper, cadmium, and zinc (Ag(+), Cu(+2), Cd(+2) and Zn(+2)) concentrations as low as 0.08 parts per million (ppm), chloride as low as 0.35 ppm, and ferrous iron (Fe(+2)) and ferric iron (Fe(+3)) at the 0.3 ppm level.