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研究了苯异硫脲基乙酸 (PTHA)用于Pd (Ⅱ )的萃取分离性能 ,包括萃取酸度、试剂用量、萃取容量、离子干扰等方面。ICP_AES测定的结果表明 :Al3 +,Pb2 +,Zn2 +,Cd2 +,Ni2 +,Ca2 +,Mg2 +,Cr3 +,Co2 +,Cu2 +,Fe3 +一般贱金属离子不被萃取。红外光谱结果表明PTHA试剂中硫与Pd (Ⅱ )配位 ,斜率法求得试剂过量时Pd与PTHA的摩尔比为 1∶4。该方法对钯的萃取分离具有好的选择性
The extraction and separation performance of PTHA for Pd (Ⅱ) was studied, including extraction acidity, reagent amount, extraction capacity, ion interference and so on. ICP_AES results show that the common base metal ions such as Al3 +, Pb2 +, Zn2 +, Cd2 +, Ni2 +, Ca2 +, Mg2 +, Cr3 +, Co2 +, Cu2 +, Fe3 + are not extracted. The results of FTIR showed that there was coordination between sulfur and Pd (Ⅱ) in PTHA reagent. The molar ratio of Pd to PTHA was 1: 4 when excess reagent was obtained by the slope method. The method has good selectivity for palladium extraction and separation