摘要
目的研究杯芳烃醚酯类衍生物1a-d对碱金属Na+,K+及过渡金属离子的萃取作用。方法以1a-d为萃取剂,用原子吸收标定方法测定萃取前、后水溶液中金属离子的浓度并计算萃取百分数。结果杯芳烃醚酯类衍生物1a-d对碱金属离子无明显萃取作用;醚酯类衍生物1a仅对Fe3+有明显的萃取作用;醚酯链较长的1c和1d对过渡金属离子均表现出较好的萃取作用,萃取效果以1c为最佳。结论醚酯链的引入能有效地改善空腔较大的杯[6]、杯[8]芳烃对过渡金属离子的配位作用。
Objectiveu To study the extracting effects of ethylene glycol ether groups substituted calix[n] arenes derivatives 1a - d to alkali and transition metal ions. Methods Their extracting properties for alkali and transition metal ions were studied by atomic absorption methods.Results Calix[n]arenes derivatives 1a- d showed no extracting ability to alkali metal ions; 1a showed good selective- extracting ability to Fe^3＋ ;1c and ld both showed moderate extraction for transition metal ions. Conclusion The introduction of ethylene glycol ether chains can improve the extracting abilities of calix [6]arenes and calix [8]arenes.
出处
《徐州医学院学报》
CAS
2005年第4期312-314,共3页
Acta Academiae Medicinae Xuzhou
关键词
杯芳烃醚酯类衍生物
金属离子
萃取
ethylene glycol ether substituted calixarenes derivatives
metal ions
extraction
