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Citation: GONG Chun-Xi, WEI Xiao-Ping, LI Jian-Ping. Fabrication and Application in SCN^- Detection of Copper(Ⅱ) Ionic Selective Electrode Based on Salicylaldehyde-1,2-phenylenediamine Sensitive Membrane[J]. Chinese Journal of Applied Chemistry, ;2010, 27(8): 950-954. doi: 10.3724/SP.J.1095.2010.90737 shu

Fabrication and Application in SCN^- Detection of Copper(Ⅱ) Ionic Selective Electrode Based on Salicylaldehyde-1,2-phenylenediamine Sensitive Membrane

College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541004

Received Date: 10 November 2009
Revised Date: 4 February 2010

Salicylaldehyde-1,2-phenylenediamine(SPS) was synthesized by the reaction of salicylaldehyde with phenylenediamine. A copper(Ⅱ) ionic selective electrode with a sensitive membrane consisted of carbon paste and neutral SPS carrier was fabricated with liquid paraffin as the binder. The Cu(Ⅱ)-selective electrode was deployed to determine the concentration of SCN^- anion and exhibited a Nernstian response to SCN^- ions over a range of 1.0 × 10^-6~1.0 × 10^-2 mol/L,with a regression equation of E(mV)=-51.19 lg c_SCN^--853.75(r=0.9997) and a detection limit of 4.0 × 10^-7 mol/L. The response time of the electrode is less than 30 s. The electrode also shows a high selectivity,good stability and durability. The electrode has been successfully applied in determing the concentrations of SCN^- in waste water samples.
- SCN^-,
- ion-selective electrode,
- salicylaldehyde-phenylenediamine,
- carbon paste
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Fabrication and Application in SCN- Detection of Copper(Ⅱ) Ionic Selective Electrode Based on Salicylaldehyde-1,2-phenylenediamine Sensitive Membrane

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通讯作者: 陈斌, bchen63@163.com

Fabrication and Application in SCN^- Detection of Copper(Ⅱ) Ionic Selective Electrode Based on Salicylaldehyde-1,2-phenylenediamine Sensitive Membrane