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The kinetics of dechlorination dictate that the measurement must be completed in neutral solutions. A portable, analog circuitry-based instrument with direct readout using constant current coulometry with amperometric end point detection was developed and evaluated. An optocoupler and separate power supplies were used for circuit isolation of the detector from the generator. A range of concentrations...
Determination of oxidizable solutes in water is accomplished using amperometric detection in a solution exchange apparatus. The applied potential (E a ) used is +0.5 V vs. SCE at n nickel working electrode. Electrode pretreatment is performed at -1.0 V vs. SCE. The background electrolyte is 0.1 M NaOH. Analyte solution drawn into the cell replaces background solution. No further convection...
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