论文部分内容阅读
本文用两相滴定法测定了HDEHP在煤油/H_2O体系中的二聚常数(K_2)和两相电离常数((K_d)/(K_a))位,其结果(25±0.5℃)为: 其中[],()分别表示浓度和活度, (o) 代表有机相,水相不加下标。在上述实验的基础上,考察了HDEP—煤油/0.1M(N_a,H)Cl体系萃钠的行为。在不直接取样分析两相纳含量的情况下,通过对两相滴定数据的数学处理,表明: 当α(体系中HDEHP被NaOH中和的分数)较低时,萃取反应为当α>25%且有机相HDEHP的初始浓度C_(HA(0)=1×10~(-3)M时,萃钠的反应为1g K_(1,0)~(Na)=-6.70±0.04
In this paper, the two-phase titration method was used to determine the dimerization constant (K_2) and the two-phase ionization constant (K_d) / (K_a)) of HDEHP in kerosene / ], (), Respectively, concentration and activity, (o) on behalf of the organic phase, the water phase without subscript. Based on the above experiments, the HDAC-kerosene / 0.1M (N_a, H) C1 extraction system of sodium behavior. The results of mathematical analysis of two-phase titration data without direct sampling and analysis showed that when α (the fraction of HDEHP in the system neutralized by NaOH) is lower, the extraction reaction is when α> 25% When the initial concentration of HDEHP in the organic phase is C_ (HA) = 1 × 10 ~ (-3) M, the reaction of sodium extraction is 1g K_ (1,0) ~ (Na) = -6.70 ± 0.04