摘要
研究了N_(503)萃淋树脂的合成方法及其分离富集金的条件.N_(503)萃淋树脂是萃取色层分离富集金的新固定相.2%硫脲、1%亚硫酸钠水溶液均可以定量解脱柱床上的金.经矿样验证,金的测定结果与717离子交换树脂吸附法一致.红外光谱表明该萃取色层与N_(503)液液萃取金有相同的机理.
A synthetic method is described for the preparation of N_(503)levextrel resin. The conditions of the separation and enrichment of gold are investigated with a levextrel resin containing N, N- (1-methylheptyl) acetamide(N_(503),for short)as a fixed phase. The results showed that N_(503) is a new selective stationary phase for gold. It was found that in 0.1mol/L HCl gold can be retained on CL-N_(503) column. The eluant of gold is 1 % sodium sulfite solution or 2 % thiourea solution. The recovery of gold in the determination of ore sample is the same as the adsorption by 717 resin. Moreover, possible structure form of gold adsorbed on the levextrel resin is suggested from the infrared spectra and HNMR spectra.
出处
《贵金属》
CAS
CSCD
北大核心
1989年第4期1-10,共10页
Precious Metals
关键词
金
富集
N503萃淋树脂
分离
Gold, Concentration, Separation, Ion-exchange resins
