聚乙二醇-硫酸铵-亚硝基R盐体系用于钴(Ⅱ)的分离
Polyethylene Glycol-Ammonium Sulfate-Nitroso R Salt System for the Separation of Cobalt (Ⅱ)
颜鑫灏 1胡国梁 1陈睿希 1刘红瑜 2姚奇志 2李娇 2李玲玲2
作者信息
- 1. 中国科学技术大学化学与材料科学学院,合肥 230026
- 2. 化学国家级实验教学示范中心(中国科学技术大学),合肥 230026;中国科学技术大学化学与材料科学学院,合肥 230026
- 折叠
摘要
在pH=5缓冲溶液条件下,对仅有Co2+、仅有Ni2+、Co2+与Ni2+混合三种情况下Co2+的萃取率进行了探究.结果显示单独萃取Co2+时萃取率高达75.47％;然而对于混合溶液,萃取率较单独萃取Co2+明显下降.通过系列对比实验发现Ni2+的存在对Co2+的分光光度测量造成了干扰.因此,在综合性实验中我们利用分光光度法针对Co2+的萃取率进行分析,以及对可能影响萃取率的因素——pH、萃取时间、萃取次数进行了探究,寻找最佳实验条件,提高萃取率.
Abstract
The extraction efficiency of Co2+was systematically evaluated under the condition of a pH 5 buffer solution. Three scenarios were examined:the extraction of Co2+in Co2+alone,Ni2+alone and a mixed Co2+and Ni2+solution. Results indicated that the extraction efficiency reached 75.47％ when Co2+was extracted independently. However,this efficiency was markedly reduced in the mixed solution signifying a significant interference from Ni2+in the spectrophotometric measurement of Co2+through a series of comparative experiments. Subsequently,a comprehensive set of experiments employed spectrophotometry to assess the extraction efficiency of Co2+,scrutinizing variables such as pH,extraction duration and extraction frequency,to identify optimal experimental conditions and improve the extraction efficiency.
关键词
聚乙二醇/分光光度法/萃取率/pH/萃取次数Key words
Polyethylene glycol/Spectrophotometric/Extraction rate/pH/Extraction frequency引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据