Complexation Behavior of Guanine with Th4+, UO22+, and Ce3+ at Various Temperatures
Articles > Article · 2010
Authors: Serap TEKSÖZ, Çiğdem İÇHEDEF, Perihan ÜNAK
Journal of Chemical & Engineering Data, Journal Indexed in SCI Expanded, International, WoS, 2010, vol 55, pp 2077-2083
DOI: 10.1021/je901003p
Summary
The complexation of guanine with Th 4+, UO 2 2+, and Ce 3+ was investigated using the potentiometric method at a constant ionic strength of I = 0.10 mol·dm −3 (KCl) in aqueous solutions at elevated temperatures. For each metal ion, stability constants were obtained from the pH-metric data using the program HYPERQUAD2006. The formation of monomeric and polymeric species was taken into consideration for each ion at (25, 37, and 45) °C. The thermodynamic parameters for the formation of the guanine complexes were calculated. In conclusion, it is indicated that the values of the stability constants change at various temperatures.