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Title: <span style="font-size:15.0pt;mso-bidi-font-size: 11.0pt;font-family:"Times New Roman";mso-fareast-font-family:"Times New Roman"; mso-ansi-language:EN-GB;mso-fareast-language:EN-US;mso-bidi-language:HI; mso-bidi-font-weight:bold" lang="EN-GB">Highly selective transport of Pb<sup>2+</sup> ion through a liquid membrane containing 1, 4, 8, 11-tetraazacyclotetradecane as a carrier</span>
Authors: Khayatian, Gholamreza
Esmaeily, Farzad
Keywords: Crown ether
Lead ion
Liquid membrane transport
Issue Date: Nov-2012
Publisher: NISCAIR-CSIR, India
Abstract: <span style="font-size:9.0pt;mso-bidi-font-size:11.0pt;mso-bidi-font-family:" times="" new="" roman""="" lang="EN-GB">Tetraaza-14-crown-4 has been used as a highly selective and efficient carrier for the uphill transport of Pb<sup>2+</sup> ion through a chloroform bulk liquid membrane. By using pyrophosphate as a metal ion acceptor in the receiving phase, the amount of Pb<sup>2+</sup> transported across the liquid membrane after 90 min is found to be 95 ± 2.6 %. The selectivity and efficiency of lead ion transported from aqueous solution containing equimolar mixtures of Cu<sup>2+</sup>, Hg<sup>2+</sup>, Ca<sup>2+</sup>, Mg<sup>2+</sup>, K<sup>+</sup>, Na<sup>+</sup>, Ni<sup>2+</sup>, Zn<sup>2+</sup>, Fe<sup>3+</sup>, Ag<sup>+ </sup>and Cd<sup>2+</sup>are also investigated. The proposed system reveals not only an improved selectivity for Pb<sup>2+</sup> ion transport, but also a much lower transport time. </span>
Description: 409-413
ISSN: 0975-0991 (Online); 0971-457X (Print)
Appears in Collections:IJCT Vol.19(6) [November 2012]

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