$PVF^{+}Cl^{-}$ Modifiye Platinyum Elektrotlar ile Gümüş İyonlarının Voltametrik Tayini ve Önderiştirmesi

Gümüş(I) iyonlarının poli(vinilferrosenyum)/klorür ($PVF^{+}Cl^{-}$) ile modifiye edilmiş platin elektrotunda önderiştirilmesi ve diferansiyel puls anodik sıyırma voltametrisi ile tayini çalışıldı. Belirlenen optimum koşullarda $1x10^{-3} M –5x10^{-5} M ve 5x10^{-6} M – 1x10^{-8} M$ M derişim aralıklarında iki adet doğrusal kısmı bulunan bir kalibrasyon eğrisi elde edildi. Tayin sınırının $1x10^{-9}$ M olduğu yöntem için $10^{-6}$ M $Ag^{+}$ çözeltisiyle bağıl standart sapma 9.56 % (n = 6) olarak hesaplandı. Ayrıca klorür kompleksleri oluşturduğu bilinen $Hg^{2+}, Fe^{3+} ve $Pb^{2+}$ iyonları için girişim çalışması yapıldı ve modifiye elektrot, gümüş iyonları eklenmiş çeşme suyunda test edildi.

Preconcentration and Voltammetric Determination of Silver Ions On $PVF^{+}Cl^{-}$ ClModified Platinum Electrode

Preconcentration of silver (I) ions on poly(vinylferrocenium)/chloride ($PVF^{+}Cl^{-}$) modified platinum electrode prior to differential pulse anodic stripping determination of the metal was reported. At the optimum conditions, a calibration curve having two linear parts with different slopes was obtained at the concentration intervals $1x10^{-3} M – 5x10^{-5} M and 5x10^{-6} M – 1x10^{-8} M$. The detection limit was determined as $1x10^{-9}$ M. The relative standard deviation was calculated as 9.56 % (n = 6) for 1 x $10^{-6}$ M $Ag^{+}$ solution. Interferences of $Hg^{2+}, Fe^{3+} and $Pb^{2+}$ ions which are capable of forming chloride complexes were examined. The modified electrode was applied to determination of silver ions in spiked water samples.

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