Preconcentration and Voltammetric Determination of Silver Ions On PVF+Cl- Modified Platinum Electrode

Year 2014, Volume: 42 Issue: 4, 571 - 576, 01.11.2014

Mutlu Sönmez Çelebi Haluk Özyörük Serdar Abacı

Abstract

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 Hg2+, Fe3+ and Pb2+ ions which are capable of forming chloride complexes were examined. The modified electrode was applied to determination of silver ions in spiked water samples.

Keywords

Poly vinylferrocenium, Modified electrode, Pt disc electrode, Silver determination

PVF+Cl- Modifiye Platinyum Elektrotlar ile Gümüş İyonlarının Voltametrik Tayini ve Önderiştirmesi

Abstract

G ümüş 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 derişim aralıklarında iki adet doğrusal kısmı bulunan bir kalibrasyon eğrisi elde edildi. Tayin sınırının 1x10-9 M olduğu yöntem için 1x10-6 M Ag+ çözeltisiyle bağıl standart sapma 9.56 % n = 6 olarak hesaplandı. Ayrıca klorür kompleksleri oluşturduğu bilinen Hg2+, Fe3+ ve Pb2+ iyonları için girişim çalışması yapıldı ve modifiye elektrot, gümüş iyonları eklenmiş çeşme suyunda test edildi

Keywords

Poli vinilferrosenyum, Modifiye elektrot, Pt disk elektrot, Gümüş tayini

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