Studies on the liquid-liquid extraction of nickel(II), zinc(II), cadmium(II), mercury(II) and lead(II) with 1-phenyl-3hydroxy-4-dodecyldithiocarboxylate-5-pyrazolone

被引:56
|
作者
Oliva, A [1 ]
Molinari, A [1 ]
Zúñiga, F [1 ]
Ponce, P [1 ]
机构
[1] Pontificia Univ Catolica Valparaiso, Inst Chem, Valparaiso, Chile
关键词
solvent extraction; transition ions; pyrazolone-1; dithiocarboxylate;
D O I
10.1007/s00604-002-0905-9
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
The extraction behaviour of Ni(II), Zn(II), Cd(II), Hg(II) and Pb(II) from aqueous solution, as function of pH, has been investigated with chloroform solutions of 1-phenyl-3-hydroxy-4-dodecyldithiocarboxylate-5-pyrazolone (HDTC-12) as extractant. In each case, the extracted species was found to be M(DTC-12)(2) and the extraction constants were deduced by non-linear regression analysis. The results demonstrate that this ligand extracts selectively Hg(II) from Cd(II) as well as from Pb(II).
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收藏
页码:201 / 203
页数:3
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