Monitoring Trace Amounts of Silver(I) in Water Samples Using a Potentiometric Sensor Based on 1,3-Bis(2-ethoxyphenyl)Triazene

作者：Mohammadi Moslem^*; Khodadadian Mehdi; Rofouei Mohammad Kazem; Beiza Armin; Jalalvand Ali Reza

来源：Sensor Letters, 2010, 8(2): 285-291.

DOI：10.1166/sl.2010.1265

• Silver-Selective Electrode
• Potentiometric Sensor
• PVC Membrane
• 1,3-Bis(2-ethoxyphenyl)Triazene (EPT)

This study reports a new silver(I) ion-selective electrode based on 1,3-bis(2-ethoxyphenyl)triazene as a neutral carrier for detection and determination of trace amounts of silver(I) in aqueous solutions. Nernstian electrode response (59.8 +/- 0.7 mV decade(-1)) for silver ion was observed over a wide concentration range (3.2 x 10(-7) - 1.0 x 10(-1) M) with a low detection limit (8.5 x 10(-8) M). The electrode revealed good selectivity toward Ag(I) ion over a wide variety of alkali, alkaline earth, transition, and heavy metal ions. The proposed silver(I) ion-selective electrode was used for the determination of Ag(I) in aqueous samples and as an indicator electrode in potentiometric titration of Ag(I) ions.

• 出版日期2010-4