In order to explore this type of <sup>99m</sup>Tc-GH and N<sub>2</sub>S<sub>2</sub> ligands exchange reaction as a common method for the preparation of <sup>99m</sup>Tc-...In order to explore this type of <sup>99m</sup>Tc-GH and N<sub>2</sub>S<sub>2</sub> ligands exchange reaction as a common method for the preparation of <sup>99m</sup>Tc-N<sub>2</sub>S<sub>2</sub> complexes, detailed kinetic study of ligand exchange reaction between <sup>99m</sup>Tc-GH and ECD was carried out. This paper presents preliminary results from the study at different ligand concentrations and pH values. The ligand exchange reaction is a second order reaction. Its rate constant being pH dependent were determined as: k<sub>pH2</sub>=1.11×104 l.mol<sup>-1</sup>. min<sup>-1</sup>, k<sub>pH5</sub>=1.34×10<sup>4</sup> l.mol<sup>-1</sup> min<sup>-1</sup>, kpH6=2.24×10<sup>4</sup> l. mol<sup>-1</sup>.min<sup>-1</sup>.展开更多
文摘In order to explore this type of <sup>99m</sup>Tc-GH and N<sub>2</sub>S<sub>2</sub> ligands exchange reaction as a common method for the preparation of <sup>99m</sup>Tc-N<sub>2</sub>S<sub>2</sub> complexes, detailed kinetic study of ligand exchange reaction between <sup>99m</sup>Tc-GH and ECD was carried out. This paper presents preliminary results from the study at different ligand concentrations and pH values. The ligand exchange reaction is a second order reaction. Its rate constant being pH dependent were determined as: k<sub>pH2</sub>=1.11×104 l.mol<sup>-1</sup>. min<sup>-1</sup>, k<sub>pH5</sub>=1.34×10<sup>4</sup> l.mol<sup>-1</sup> min<sup>-1</sup>, kpH6=2.24×10<sup>4</sup> l. mol<sup>-1</sup>.min<sup>-1</sup>.