Spectrophotometric study of erbium (III) speciation in chloride solutions from 25 to 75 °C

In this study, UV-Vis spectrophotometric experiments were conducted from 25 to 75 °C using ~0.06 mol/kg erbium (Er) in HClO4-bearing solutions at pH of 1.5 with varying NaCl concentrations ranging from 0 to ~1.7 mol/kg (mCl/mEr ratios from 0 to ~34).本研究中，于25 ℃至75 ℃的温度区间内开展了紫外-可见分光光度（UV-Vis spectrophotometric）实验；实验体系为pH值1.5的含高氯酸（HClO4）溶液，其中铒（Er）的质量摩尔浓度约为0.06 mol/kg，同时设置了0至约1.7 mol/kg的氯化钠（NaCl）浓度梯度，对应氯离子与铒的质量摩尔浓度比（mCl/mEr）范围为0至约34。