Uptake of plutonium by Portland cement in degradation stage II was investigated in the presence of α-D-isosaccharinic acid (ISA) under reducing conditions set by hydroquinone, Sn(II) or Na₂S₂O₄. Sorption experiments were performed at log [Pu]_in = –6 to –9, log [ISA]_tot = –6 to –2 and with solid to liquid ratios (S:L) of 0.1 to 50 g⋅dm^–3. ISA sorbs strongly on cement, causing a significant decrease in the ζ potentials of cement particles above log [ISA]_tot ≥ –3.5 at S:L ≤ 4 g⋅dm^–3. Sorption of Pu significantly decreases above log [ISA]_tot ≥ –4.5 due to the competing formation of aqueous Ca(II)–Pu(IV)–ISA complexes. The increased retention of Pu observed above ∼25% of surface coverage by ISA is attributed to the co-adsorption of Pu(IV) with ISA. The impact of the order of addition of individual components on Pu sorption kinetics can be on the scale of several years.

在对苯二酚，Sn（II）或Na ₂ S ₂ O ₄设定的还原条件下，在α-D-异糖精酸（ISA）存在下，研究了降解阶段II中硅酸盐水泥对p的吸收。吸附实验在log [Pu] _in = –6至–9，log [ISA] _tot = –6至–2的条件下进行，固液比（S：L）为0.1至50 g·dm ^–3。ISA上水泥强烈索布，引起在水泥颗粒的ζ电势以上的日志一个显著减少[ISA]_托特≥-3.5处为：L≤4g⋅dm ^-3。Pu的吸附量显着降低，超过log [ISA] _tot≥–4.5是由于Ca（II）–Pu（IV）–ISA水溶液的竞争形成。ISA在约25％的表面覆盖率以上观察到的Pu保留量的增加归因于Pu（IV）与ISA的共吸附。单个组分的添加顺序对Pu吸附动力学的影响可能会持续数年。