Copper(II)-selective membrane electrodes based on some recently synthesized mixed aza-thioether crowns containing a 1,10-phenanthroline sub-unit

M Shamsipur; M Javanbakht; M F Mousavi; M R Ganjali; V Lippolis; A Garau; L Tei

doi:10.1016/s0039-9140(01)00434-9

Copper(II)-selective membrane electrodes based on some recently synthesized mixed aza-thioether crowns containing a 1,10-phenanthroline sub-unit

Talanta. 2001 Dec 24;55(6):1047-54. doi: 10.1016/s0039-9140(01)00434-9.

Authors

M Shamsipur¹, M Javanbakht, M F Mousavi, M R Ganjali, V Lippolis, A Garau, L Tei

Affiliation

¹ Department of Chemistry, Razi University, Kermanshah, Iran.

PMID: 18968455
DOI: 10.1016/s0039-9140(01)00434-9

Abstract

Three different mixed aza-thioether crowns containing a 1,10-phenanthroline sub-unit were investigated to characterize their abilities as copper(II) ion carriers in PVC-membrane electrodes. The electrode based on L1 exhibited a Nernstian response for Cu(2+) ions over a wide concentration range (2x10(-1) to 1x10(-5) M) with a limit of detection of 8.0x10(-6) M (0.5 p.p.m.). The response time of sensor is 15 s, and the membrane can be used for more than 3 months without observing any deviation. The electrode revealed comparatively good selectivities with respect to many alkali, alkaline earth, transition and heavy metal ions, and could be used in a pH range of 2.5-5.5. It was applied to the direct determination and potentiometric titration of the copper(II) ion.