Journals / Pamukkale Üniversitesi Mühendislik Bilimleri Dergisi / 2018 / Cilt: 24 - Sayı: 7

Potentiometric determination of Cu2+ ions in environmental samples using a newly developed Cu2+-selective electrode based on schiff base

Schiff bazı temelli yeni geliştirilmiş Cu2+-seçici elektrot kullanılarak çevresel örneklerdeki Cu2+ iyonlarının potansiyometrik tayini

Pages
1325–1331
Publication Date
2018-12-28
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

The electrode was successfully used in the potentiometric titration of Cu2+ ions with EDTA and the potentiometric determination Cu2+ ions in water samples with different matrix structures such as tap water, river water and dam water.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:In this study, we investigated the possibility of preparing ion-selective electrodes for cationic species by using a newly synthesized Schiff base.
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Key Findings & Data:PVC-membrane compositions in different ratios were prepared by using schiff base complex, polyvinylchloride, o-nitrophenyl octylether and potassiumtetrakis parachlorotetraphenylborate.
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Conclusion & Impact:The electrode was successfully used in the potentiometric titration of Cu2+ ions with EDTA and the potentiometric determination Cu2+ ions in water samples with different matrix structures such as tap water, river water and dam water.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Schiff bazı · Cu2+-seçici elektrot · Potansiyometrik Cu2+ tayini

Abstract

In this study, we investigated the possibility of preparing ion-selective electrodes for cationic species by using a newly synthesized Schiff base. PVC-membrane compositions in different ratios were prepared by using schiff base complex, polyvinylchloride, o-nitrophenyl octylether and potassiumtetrakis parachlorotetraphenylborate. The prepared membrane compositions were coated on the surfaces of solid state contact electrodes and ion selective electrodes were fabricated. Potentiometric measurements showed that; prepared electrodes exhibited selective behavior towards Cu2+ ions. The most suitable membrane composition of electrode was determined as 3.9% ionophore, 32.0% polyvinylchloride, 64.0% o-nitrophenyl octylether (plasticizer) and 0.1% potassiumtetrakis parachlorotetraphenylborate. The prepared Cu2+-selective electrode showed potentiometric working range to Cu2+ between the concentration of 1.0×10-5 and 1.0×10-1 M with a slope of 29.8±0.7 mV per decade (R2= 0.9966) in the presence of the common cationic species. It was observed that the electrode reached the equilibrium potential within 5 seconds and had a limit of 4.1×10-6 M. It was tested that the developed electrode exhibited potentiometric behavior at pH = 3.0-8.0 without being affected by the pH change of the test solutions. In addition, the potentiometric Cu2+-selective electrode had 12-week lifetime. The electrode was successfully used in the potentiometric titration of Cu2+ ions with EDTA and the potentiometric determination Cu2+ ions in water samples with different matrix structures such as tap water, river water and dam water.

Özet

Bu çalışmada, yeni sentezlenen bir schiff bazı kompleksi kullanılarak katyonik türler için iyon seçici elektrotların hazırlanabilmesi durumu araştırılmıştır. Schiff bazı kompleksi, polivinilklorür, o-nitrofenil oktileter ve potasyumtetrakis paraklorotetrafenilborat maddeleri ile farklı kompozisyonlarda PVC-membran karışımları hazırlanmıştır. Hazırlanan membran karışımları, katı-kontak elektrotlara kaplanmıştır ve iyon seçici elektrotlar oluşturulmuştur. Yapılan potansiyometrik ölçümler, hazırlanan elektrotların Cu2+ iyonlarına karşı seçici davranış sergilediğini göstermiştir. Elektrotun en uygun membran bileşiminin ise %3.9 iyonofor, %32.0 PVC, %64.0 o-nitrofenil oktileter (plastikleştirici) ve %0.1 potasyumtetrakis paraklorotetrafenilborat olduğu belirlenmiştir. Hazırlanan Cu2+-seçici elektrotun, çeşitli katyonik türlerin yanında Cu2+ iyonları için 1.0×10-5-1.0×10-1 M derişim aralığında her on katlık konsantrasyon değişiminde 29.8±0.7 mV eğimle doğrusal cevap sergiledi ve doğrusallık katsayısının ise 0.9966 (R2=0.9966) olduğu belirlenmiştir. Elektrotun 5 sn. içerisinde denge potansiyeline ulaştığı ve 4.1×10-6 M tayin limitine sahip olduğu gözlenmiştir. Geliştirilen elektrotun pH=3.0-8.0 arasında deney çözeltilerinin pH değişiminden etkilenmeden potansiyometrik davranış sergilediği test edilmiştir. İlaveten, 12 haftalık kullanım ömrü olan potansiyometrik Cu2+-seçici elektrot, Cu2+ iyonlarının EDTA ile potansiyometrik titrasyonunda ve çeşme suyu, nehir suyu ve baraj suyu gibi farklı matriks ortamlarına sahip su numunelerinde bulunan Cu2+ iyonlarının potansiyometrik tayininde başarılı bir şekilde kullanılmıştır.

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Cite This Article

KARDAŞ, F., TOPÇU, C. (2018). Potentiometric determination of Cu2+ ions in environmental samples using a newly developed Cu2+-selective electrode based on schiff base. Pamukkale Üniversitesi Mühendislik Bilimleri Dergisi, Cilt: 24 - Sayı: 7, 1325–1331. https://ajindex.com/articles/39562

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