18 flasks are taken each containing 0.5g of tea waste used as absorbent, 90ml solution with known concentration of
Pb were added so that we had 3 concentrations for each experiment and result is the average of these 3
concentrations so as to find the accurate result. All these flasks were places into a shuffler with RPM 125. After
shuffling for 2 hours these concentrations are filtered by waterman 40 so that turbidity does not interfere in this
result. The lead concentrations were than estimated by AAS (Atomic Absorption Spectroscopy). The same
procedure is been done for Ni and Cd also.