Development of PVC membrane potentiometric sensor for the determination of potassium ion and its applications

Abstract

In this study, a novel all-solid-state contact poly(vinylchloride) (PVC) membrane potassium selective sensor with a pyrazole derivative molecule as an ionophore has been developed. The potassium selective sensor has a composition of PVC, ionophore, anion excluder (potassium tetrakis (p-chlorophenyl)borat (KTpClPB)) and plasticizer (bis(2- ethylhexyl)adipate (DEHA)) in the ratio of 32.0:4.0:1.0:63.0 (mg). The potassium selective sensor works in a linear concentration range of 1.0×10-5 to 1.0×10-1 M with a low detection limit of 6.02 × 10−6 M The developed potassium selective sensor works in pH range of 6.0-10.0 and has good repeatability, selectivity and a short response time of 10 seconds. Finally, the developed potassium selective sensor was successfully used in the determination of potassium in tap water and a drug sample.

Keywords

• Potassium
• PVC membrane
• Potentiometry

Potasyum iyonunun tayini için PVC membran potansiyometrik sensör geliştirilmesi ve uygulamaları

Öz

kullanıldığı yeni tümüyle katı hal kontak poli(vinilklorür) (PVC) membran potasyum sensörü geliştirildi. Potasyum seçici sensör PVC, iyonofor, potasyum tetrakis (p-klorofenil)borat (KTpClPB)) ve plastikleştirici (bis (2-etilheksil)adipat (DEHA))’ın 32.0:4.0:1.0:63.0 (mg)’lık bileşimine sahiptir. Geliştirilen potasyum seçici sensör, 6.02×10- 6 M’lık düşük algılama limiti ile 1.0×10-5 -1.0×10-1 M konsantrasyon aralığında doğrusal olarak çalışmaktadır. Geliştirilen potasyum seçici sensör pH 6.0-10.0 aralığında çalışmaktadır, iyi tekrarlanabilirlik, iyi seçicilik ve 10 saniyelik kısa cevap zamanına sahiptir. Son olarak, geliştirilen potasyum seçici sensör musluk suyu ve ilaç örneğinde potasyum tayininde başarıyla kullanılmıştır

Anahtar Kelimeler

• potasyum
• PVC membran
• Potansiyometri

Kaynakça

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