Mixed Ca2+/UO2 2+/CO3 2- complex formation at different ionic strengthsстатья
Статья опубликована в высокорейтинговом журнале
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:Fluorescence spectroscopy was used to study the Ca 2+/UO 2 2+/CO 3 2- solution system at different ionic strengths. Fluorescent titrations confirmed formation of Ca 2UO 2(CO 3) 3 complex for which the values of log β 213 were measured at 0.1, 0.3, 0.7, 1.0 and 3.0 m (NaClO 4) at pcH = 8.1. Specific Interaction Theory (SIT) was used to correlate the log β 213 values as a function of ionic strength. The value obtained for log β 213/ 0(I=0) was 29.8±0.7, indicating that Ca 2UO 2(CO 3) 3 was the predominant specie at the pH 8 in calcium rich, oxic waters.