正丙醇-硫氰酸铵-水体系析相萃取分离和富集锗的研究.pdf

第12期
化学世界
正丙醇一硫氰酸铵水体系析相萃取分离和富集锗的研究
刘小玉1,司学芝,井佩,马万山
(1.倌阳师范学院化学化工学院,河南信阳464000;2.河南工业大学化学化工学院,河南郑州450052)
摘要:研究了正两醇-碗氟酸铵一水体系析相萃取分离和富集错的行为及与一些金属离子分高的
条件。结果表明,碗酸铵能使正丙醇的水溶液分成两相,在分相过程中,Ge(Ⅳ)和硫氰酸铁生成的
Ge(SCN)。2-与质子化正丙醇 C] H, OH形成的缔合物[Ge(SCN)。2-JLC3HOHは2能被正丙醇
相完全萃取。当正两醇、碗氟酸铵和硫酸铵的浓度分别为30%(WV)、5.0×10-2mol/L、0.20g/
mL时,Ge(Ⅳ)的萃取率达到97.0%以上,Cd()、Ce()、Mn(I)、Pb(I)、Cr(Ⅲ)、A1(Ⅲ)、V
(V)、Ni(I)、Ga(I)、Mg(I)、Zn(I)和Fe(ID基本不被萃取,实現了Ge(V)与上速金属离子的
分离。对合成水样中错的分离和测定,结果满意。
关键词:错;正丙醇;碗氰酸铵;萃取分离
中图分类号:O652.62
文标志码:A
文章编号:0367-6358(2011)12-0725-03
Study on Enrichment and Extraction of Germanium in 1-propanol
NHASCN-H2 O System with Phase Separation
LIU Xiao-yu SI Xue-zhi, JING Pei, MA Wan-shan
(I. College of Chemistry and Chemical ingineering, Xinyang Normal Uniersity, Henan Xin yang 464000, China,
2. College of Chemistry and Chemical Engineering, Henan University of Technology; Henan Zhengzhou 450052, China)
Abstract: The behavior and conditions of enrichment and extraction separation of germanium from other
metal ions in 1-propanol-nha SCN-H2O system with phase separation were studied. Theresults showed
that 1-propanol aqueous solution could be well divided into two phases in the presence of(NH&)SO,. The
associated[Ge(SCN)。2-1LC3H1OHは12 formed with C3H1OHは and Ge(SCN)。2( combined from Ge(Ⅳ)
and NH& SCN) could be completely extracted during this process. Ge(V could be quantiatively separated
from Cd(I),Ce(Ⅲ),Mn(Ⅱ),Pb(I),Cr(皿),AI(Ⅲ),V(V),Ni(I),Ga(U),Mg(Ⅱ),Zn(I)
and Fe (II by extraction, and the extraction percentage of Ge(V was over 97.0% when the
concentrations of 1-propanol, NH SCN and (NH,) 2 SO, in solution were 30%(V/V), 5.0X mol/L
and 0.2 g/ml, respectively. The method has been used for the separation and determination
germanium in water samples with satisfactory results.
Key words: germanium; 1-propanol; NH, SCN; extraction separation
锗是重要的半导体材料,在食品和医疗等方面也应用广泛。在地壳中緒是最分散的元素之一,为
收日期:2011-07-25;修回日期:2011-1-10
甚金项目:河南省教育厅自然科学研究计刘项目(2006150023)
作者简介:刘小玉(1978~),女,河南叶县人,硕土,讲师,主要研究方向为金属离子的分离与富集。联系人:E- mail: mawansxy@
126.com。