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Citation: DU Qiao-Yun, WANG Jian-Ge, JI Su-Ning. Extraction Separation of Copper(Ⅱ) by N,N'-Didodecyl (ethylenediamine diacetic acid)[J]. Chinese Journal of Applied Chemistry, ;2003, 20(8): 764-767. shu

Extraction Separation of Copper(Ⅱ) by N,N'-Didodecyl (ethylenediamine diacetic acid)

1.
Department of Chemistry, Luoyang Teacher's College, Luoyang 471022

Corresponding author: DU Qiao-Yun,
Received Date: 18 December 2002
Available Online: 14 April 2003

Extraction behaviour of N,N'-didodecyl(ethylenediamine diacetic acid)(H₂R₂Y) in chloroform for Cu(Ⅱ) has been investigated as function of acidity of the initial aq. phase, concentration of extractant and extraction temperature. The extraction ratio was found to be increased with concentration of H 2 R 2 Y and temperature. The highest extraction ratio of Cu(Ⅱ) has been achieved at pH≥6. The mole ratio of Cu²⁺ to ligand in extracted species was 1:1 as determinated by conductivity and mole ratio method. The extration system is efficient for separation Cu(Ⅱ) from transition metals such as Fe(Ⅱ)、Co(Ⅱ)、Ni(Ⅱ)、Zn(Ⅱ)、Mn(Ⅱ) when pH=6.
- N,N'-didodecyl(ethylendiamine diacetic acid),
- extraction separation,
- chelate,
- copper
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