- 作者: --
- 作者服務機構: Department of Chemistry, Faculty of Science Suez Canal University, Ismailia, Egypt
- 中文摘要: The interaction of zinc(II), lead(II), and cadmium(II) with Glutathione (d-L-glutamyl-Lcysteinylglycine) as primary ligand and zwitterionic buffers (N-[2-Hydroxyethyl]piperazine-N¢-[2-ethanesulfonic acid]) (HEPES) and (N-Hydroxyethyl]piperazine-N¢-[2-hydroxy-propanesulfonic acid]) (HEPPSO) as secondary ligands were studied by potentiometric-pH titration in 1:1:1 ratio at 25.0 °C and I = 0.1 mol.dm-3 (KNO3). The formation constants of different normal and protonated binary and ternary complex species were calculated. Formation constants for the monohydroxy, and dihydroxy complexes for the binary systems M(II) + HEPES and M(II) + HEPPSO have been evaluated. The distribution curves for the various complex species as a function of pH were constructed.
- 英文摘要: --
- 中文關鍵字: Glutathione; Zwitterionic buffers; Binary complexes; Ternary complexes; Hydroxy complexes; Zn(II), Pb(II), and Cd(II) complexes.
- 英文關鍵字: --