Chemometrically-Assisted Fabrication of a Potentiometric Sensor for Potassium Ion Based on Kryptofix 22 Ionophore
- Авторлар: Mahboubeh Vafi 1, Rounaghi G.H.1, Es’haghi Z.2
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Мекемелер:
- Department of Chemistry, Mashhad Branch, Islamic Azad University
- Department of Chemistry, Payam Noor University
- Шығарылым: Том 92, № 13 (2018)
- Беттер: 2795-2801
- Бөлім: Physical Chemistry of Surface Phenomena
- URL: https://journals.rcsi.science/0036-0244/article/view/170301
- DOI: https://doi.org/10.1134/S0036024418130320
- ID: 170301
Дәйексөз келтіру
Аннотация
A novel ion-selective membrane electrochemical sensor based on Kryptofix 22 as an ionophore was constructed for determination of potassium ion in real samples. The D-optimal mixture design (D‑OMD) was used as an experimental design strategy for optimal formulation of the membrane ingredients. The fabricated electrode exhibits a Nernstian slope of 59.80 ± 0.65 mV per decade and a linear range of 1.0 × 10–4 to 1.0 × 10–1 mol/L with respect to potassium ion at the pH range of 3.0 to 7.0 and its detection limit was found to be 6.2 × 10–5 mol/L. The response of the electrode is very stable and it exhibits a good reproducibility with a fast response time (~10 s). The experimental results, showed a good selectivity towards the K+ ion at present of interfering ions. The obtained results by using D-OMD showed a non-linear relation between the slope of the electrode and its ingredients. The proposed electrode was successfully applied for determination of potassium ion in vegetables and urine samples.
Негізгі сөздер
Авторлар туралы
Mahboubeh Vafi
Department of Chemistry, Mashhad Branch, Islamic Azad University
Email: ghrounaghi@yahoo.com
Иран, Mashhad
Gholam Rounaghi
Department of Chemistry, Mashhad Branch, Islamic Azad University
Хат алмасуға жауапты Автор.
Email: ghrounaghi@yahoo.com
Иран, Mashhad
Zarrin Es’haghi
Department of Chemistry, Payam Noor University
Email: ghrounaghi@yahoo.com
Иран, Tehran
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