A thermodynamic study on the complex formation between tris(2-Pyridyl)methylamine (tpm) with Fe2+, Fe3+, Cu2+ and Cr3+ cations in water–acetonitrile binary solutions using the co... by Rezayi, Majid, Lee, Yook Heng, M. Abdi, Mahnaz, Md Noran, Norfadila, Esmaeili, Chakavak, Tavakoly Sany, Seyedeh Belin, Salleh, Aishah, Narimani, Leila, Saadati, Naghmeh, Tajalli, Faezeh