Keywords : Copper selective electrode
journal of kerbala university,
Volume 7, Issue 1, Pages 93-101
Membrane of phenyl disulfide as an ionic membrane carrier in poly (vinyl chloride) (PVC) based matrix have been used for preparing Copper selective electrode. The electrode exhibits according to Nernst equation response for Cu2+ ions over a wide concentration range from 1.0x10-6 to 1.0x10-1 M with a slope equal to 29.2 mV/decade, r=0.9988 and a detection of limit 4.4x10-7 M. The response time measured was 8 second. It was found to be selective and useable within the pH range of (2.0-7.0) and the temperature equal to 293 K to 303 K. The lifetime of membrane sensor prepared could be used for at least 3 months. The electrode was successfully used as an indicator electrode in potentiometric titration of Copper ions with EDTA.