摘要
基于二苄基硫醚与钯的配合反应,建立了一种高选择性固相萃取吸附钯的方法。在0.1 mol/L的盐酸介质中,钯可以被二苄基硫醚树脂吸附富集并形成1∶2稳定配合物,该配合物可用20 g/L酸性硫脲洗脱,洗脱液经处理后用分光光度法测定,柱可以再生和重复使用,且萃取剂流失少。二苄基硫醚对钯的吸附是配位萃取机理;方法用于吸附分离钯选择性高,钯的回收率达95%以上。
On the basis of the complex reaction of dibenzyl sulfide with palladium, a high selective method of solid phase extraction for the adsorption of palladium was developed. In 0.1 mol/L HC1 medium, palladium could be adsorbed and enriched by dibenzyl sulfoxide resin and a stable eomplex with the ratio of 1 ： 2 was formed. The complex could be eluted by 20 g/L of acidic thiourea, the eluent was determined by the speetrophotometry and the SPE cartridge can be regenerated and reused; besides the loss of extractant is very little. The reaction mechanism between palladium（ Ⅱ ） and dibenzyl sulfide, which indicated coordination extraction mechanism, was preliminarily discussed;the method has good selectivity to absorb palladium in the acidic system containing palladium, the recovery is above 95%.
出处
《云南化工》
CAS
2009年第5期16-19,共4页
Yunnan Chemical Technology
关键词
二苄基硫醚
固相萃取
钯
dibenzyl sulfide
solid phase extraction
palladium
