烯丙基硫脲固相萃取分离钯的研究  

Study on solid phase extraction for the separation of palladium by allyl hiourea

作　　者：杨新周[1,2] 杨子仙 郝志云 胡秋芬[2] 

机构地区：[1]德宏师范高等专科学校理工系,云南德宏678400 [2]云南民族大学化学与生物技术学院,云南昆明650500

出　　处：《化学研究与应用》2013年第11期1546-1549,共4页Chemical Research and Application

基　　金：国家自然科学基金项目(20961012)资助

摘　　要：研究了用MCI-GEL树脂分离富集钯的行为及与一些金属离子分离的条件。结果表明,钯与烯丙基硫脲形成的配合物,能被MCI-GEL树脂吸附。当溶液中烯丙基硫脲与钯的摩尔比为1∶1、盐酸浓度为0.05mol·L-1时,Pd(Ⅱ)可与Pt(Ⅳ)、Fe(Ⅲ)、Ni(Ⅱ)、Cu(Ⅱ)、Zn(Ⅱ)离子定量分离,且钯的萃取率可达99%以上,经过试验得出,用酸性硫脲可将富集物洗脱下来,对合成水样的分离和测定效果良好。The behavior and conditions for the separation and enrichment of Pd from other metal ions by MCI-GEL resin were studied. The results showed that the palladium and allyl thiourea formation of compound could be adsorbed completely by MCI-GEL resin. Pd could be quantitatively separatedfrom Pt（Ⅳ）、Fe（Ⅲ）、Ni（Ⅱ）、Cu（Ⅱ）、Zn（Ⅱ） by adsorption. The extraction rate of Pd was higher than 99%when the allyl thiourea and palladium mole ratio of I ：1 and the concentrations of Hydrochloric acid are 0. 05mol·L^-1 ,respectively. The results showed that acidic thiourea was enough to elution enrichment. This method has been applied in the extraction separation and determination of Pd in synthetic water sample with satisfactory results.

关 键 词：MCI·GEL树脂 烯丙基硫脲 固相萃取 富集 

分 类 号：O658[理学—分析化学]