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考察了ＨＤＥＨＰ在不同稀释剂中对Ｚｎ（Ⅱ）的萃取平衡，探讨了萃取平衡常数与稀释剂性质间的关系，建立了平衡常数与稀释剂极性参数（ＤＰ和Ｓ）间的经验方程．求得萃合物ＺｎＡ２·２ＨＡ的溶解度参数为１６．５Ｊ１／２．ｃｍ－３／２．
The extraction equilibrium of HDEHP in different diluents was investigated. The relationship between extraction equilibrium constants and diluent properties was discussed, and empirical equations between equilibrium constants and diluent polar parameters (DP and S) were established. The solubility parameter of ZnA2 · 2HA was 16.5J1 / 2. cm-3/2.