POTENTIOMETRIC TITRATION METHOD FOR STANDARDISING AQUEOUS SULFIDE SOLUTION.

R SARIN

Abstract


A simplified method is described for standardisation of aqueous sulfide solution using sulfide ionselective electrode as the end-point detector and standard solutions of cadmium sulfate and lead nitrate as titrants. An alkaline antioxidant reagent has been used during tirtations to prevent loss of sulfide due to volatalisation and oxidation. The results obtained show that the method is highly precise and accurate when compared with the conventional iodimetric method for standardisation.

Keywords


Potentiometric method, titration method, standardisation, sulfide solution.

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