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Highly Efficient and Selective Membrane Transport of Silver(I) Using Dibenzodiaza‐15‐Crown‐4 as a Selective Ion Carrier
Author(s) -
Shamsipur Mojtaba,
Kazemi Sayed Yhaya
Publication year - 2007
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.200700138
Subject(s) - chemistry , masking agent , membrane , chloroform , thiosulfate , stripping (fiber) , selectivity , ion , aqueous solution , ion transporter , inorganic chemistry , nuclear chemistry , chromatography , organic chemistry , sulfur , biochemistry , electrical engineering , engineering , catalysis
Abstract A chloroform membrane system containing dibenzodiaza‐15‐crown‐4 was found to be a highly efficient and selective transport of Ag + ions through a chloroform liquid membrane. In the presence of thiosulfate ion as a suitable ion stripping agent in the receiving phase, the amount of silver transported across the liquid membrane after 105 minis 95 ± 1.3%. The selectivity of Ag + transport from aqueous solutions containing Tl + , Pb 2+ , Cd 2+ , Ni 2+ , Co 2+ , K + , Ca 2+ , Sr 2+ , Hg 2+ , Zn 2+ , Cu 2+ was investigated. The interfering effect of Cu 2+ ions was drastically diminished in the presence of EDTA as a proper masking agent in the source phase.