To study the selectivity of natural extract for copper ions using complexometric titration:A Green chemistry approach

Pratik Patkar; kiran Suralkar; Yogini Bambardekar; Neena Anand

Volume : VIII, Issue : IV, April - 2019

To study the selectivity of natural extract for copper ions using complexometric titration:A Green chemistry approach

Pratik Patkar, Kiran Suralkar, Yogini Bambardekar, Neena Anand

Abstract :

Development of natural complexing agents has been primarily driven by a desire to minimize the use of synthetic reagents. Garcinia Indica (Kokum) fruit extract is highly selective for Cu2+ ions forming coloured complex at pH 10. Interference studies also support the strong binding capacity of Garcinia indica with copper ions. Use of Garcinia indica extract as an indicator in complexometric titrations exhibits a sharp colour change. Further, the comparative study with standard synthetic indicator also led to the conclusion that Garcinia indica as a natural complexometric indicator for Cu2+ ions imparts the same degree of precision as obtained with synthetic indicators.