Author/Authors :
Ahmadian Yazdely، Malihe نويسنده Department of Chemistry, Shahid Bahonar University of Kerman, Kerman 76169, Iran , , Taher، Mohammad Ali نويسنده Department of Chemistry, Shahid Bahonar University of Kerman, Kerman 76169, Iran , , Tajik، Somayeh نويسنده Department of Chemistry, Shahid Bahonar University of Kerman, Kerman 76169, Iran ,
Abstract :
In this paper, the construction and performance characteristics of novel PVC
membrane Fe(II) ion selective electrodes based on (E)-2-acetyl-3-(butyl amino)-N-phenyl
buten-2-thioamide is described. The electrode exhibits linear responses with Nernstian slope
of 30.0±0.2 mVdecade?1 of activity within the Fe(II) ion concentration range of 3.5×10?7 to
1.2×10?2 M. This sensor is applicable in a pH range of 5.0-7.0. The lower detection limit is
1.6×10?7 M. It has a response time less than 10 s and can be used practically for a period of at
least 2 months without any measurable divergence in results. The isothermal temperature
coefficient of the sensor was assessed 1.24×10?3 V/oC. The electrode showed excellent
selectivity towards Fe(II) ion over a wide range of alkali, alkaline earth, and transition metals
ions. It was successfully applied for the direct determination of Fe(II) ions in real samples.
