用CHCl_3萃取Cu(Ⅱ)—铜试剂螯合物酸度条件的讨论

A Discussion of Acidity Condition for Extraction of Cu (II) -Sodium Diethyldithiocarbamate (DDTC)Chelate with Chloroform (CHCl_3)

讨论了以CHCl3 萃取Cu(Ⅱ )—铜试剂 (DDTC)螯合物体系中 ,应控制的酸度首先对影响萃取平衡的副反应 (如缓冲剂和掩蔽剂的配位反应等 )进行了考虑 ,并引入副反应系数 ,列表计算出了相应的α值 ,且在此基础上计算出了萃取应控制的pH范围 ,结果与实验确定的实验条件一致 .

This paper discusses the controlling of the acidity condition in which Cu (Ⅱ) Sodium Diethyldithiocarbamate (DDTC) chelate is to be extracted with chloroform (CHCl 3). In this paper the side reactions affecting the extract equilibrium such as complex reaction of buffering and masking substances etc.has to be considered.For this reason,this peper introduces and computes the side reactions coefficients α, and the values are in tables respectively.Based on this, the pH ranges are calculated.The result is consistent with the experimental condition determined by the experiment.