Ca (II) speciation and effect of Gd (III) speciation on Ca (II) speciation in human blood plasma were studied by computer simulation. [CaHCO3](-) is a predominant compound species of Ca (II). Gd (III) can compete with...Ca (II) speciation and effect of Gd (III) speciation on Ca (II) speciation in human blood plasma were studied by computer simulation. [CaHCO3](-) is a predominant compound species of Ca (II). Gd (III) can compete with Ca (II) for biological molecules. The presence of Gd (III) results in a increase of concentration of free Ca (II) and a decrease of concentration of Ca (II) compounds.展开更多
The stability constant for complex of Pr(Ⅲ) with adrenaline has been determined by potentiometric titration under biological conditions (37℃ and 0.15mol/L NaCl). The absorption spectra of the Pr(Ⅲ)-adrenaline syste...The stability constant for complex of Pr(Ⅲ) with adrenaline has been determined by potentiometric titration under biological conditions (37℃ and 0.15mol/L NaCl). The absorption spectra of the Pr(Ⅲ)-adrenaline system exhibit characteristic bands of Pr(Ⅲ) at lower pH values. However, the charge transfer band which is due to the coordination of Pr(Ⅲ) with adrenaline has been observed at higher pH values.展开更多
Stability and luminescence properties of Tb (Ⅲ) complexes with adrenaline have been studied. The Tb (Ⅲ) complexes with adrenalinc are quite stable. The fluorescence spectra of the Tb (Ⅲ) complexes with adrenaline s...Stability and luminescence properties of Tb (Ⅲ) complexes with adrenaline have been studied. The Tb (Ⅲ) complexes with adrenalinc are quite stable. The fluorescence spectra of the Tb (Ⅲ) complexes with adrenaline show the characteristic fluorescence bands of Tb (Ⅲ) ions which are attributed to energy transfer from ligands to Tb (Ⅲ) ions.展开更多
基金the NSFC for financial support of this work (Project Nos.29890280, 29971029).
文摘Ca (II) speciation and effect of Gd (III) speciation on Ca (II) speciation in human blood plasma were studied by computer simulation. [CaHCO3](-) is a predominant compound species of Ca (II). Gd (III) can compete with Ca (II) for biological molecules. The presence of Gd (III) results in a increase of concentration of free Ca (II) and a decrease of concentration of Ca (II) compounds.
文摘The stability constant for complex of Pr(Ⅲ) with adrenaline has been determined by potentiometric titration under biological conditions (37℃ and 0.15mol/L NaCl). The absorption spectra of the Pr(Ⅲ)-adrenaline system exhibit characteristic bands of Pr(Ⅲ) at lower pH values. However, the charge transfer band which is due to the coordination of Pr(Ⅲ) with adrenaline has been observed at higher pH values.
文摘Stability and luminescence properties of Tb (Ⅲ) complexes with adrenaline have been studied. The Tb (Ⅲ) complexes with adrenalinc are quite stable. The fluorescence spectra of the Tb (Ⅲ) complexes with adrenaline show the characteristic fluorescence bands of Tb (Ⅲ) ions which are attributed to energy transfer from ligands to Tb (Ⅲ) ions.