MpLqHr(pn+r-5q) species with different stoichiometry and protonation stages, hydrolytic mixed and polynuclear complexes. The equilibrium model and complex formation constants, obtained from various analytical techniques, are in good agreement. The sequestering ability of the ligand towards the metal cations was assessed through the determination of the pL0.5 and pM parameters at different pH values and pH = 7
通过保护的3-羟基-4-
吡啶酮和
DTPA bis-双-偶合反应,从
麦芽酚开始合成了一种新的聚
氨基
羧酸双-(3-羟基-4-
吡啶酮),
DTPA衍
生物,
DTPA(PrHP)2。酐。通过UV-Vis分光光度法和荧光分光光度法在I = 0.15 mol L -1的NaCl (
水溶液)中于T = 298.15 K和T = 310.15 K的条件下研究了
DTPA(PrHP)2的酸碱行为。1 H NMR测量在T进行 = 298.15K。从引用的不同分析技术获得的质子化常数显示出良好的一致性,并且也与文献报道的数据一致。通过电位滴定法,UV-Vis分光光度法和1 H NMR滴定研究了
DTPA(PrHP)2对二价(Ca 2 +,Cu 2 +,Zn 2+)和三价(Al 3+,Fe 3+)阳离子的络合能力。在NaCl (aq)中的T = 298.15 K和I = 0.15 mol L -1时。实验数据的拟合分析导致确定了由M