“Adsorption Behavior of Pb, Cd, Ca, Al, Zn And Co Metal Ions on Cation Exchange Resin Dowex 50 Wx8 (Nh4+ Form) From Aqueous Acetone-Ammonium Propionate Media”, int.jour.sci.res.mana, vol. 9, no. 09, pp. 23–27, Sep. 2021, doi: 10.18535/ijsrm/v9i9.ce01.