Selective determination of Cr(III) ions with novel potentiometric electrodes       
Yazarlar (4)
Prof. Dr. Ömer IŞILDAK Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Doç. Dr. Oğuz ÖZBEK Zonguldak Bülent Ecevit Üniversitesi, Türkiye
Doç. Dr. İlyas YILDIZ Iğdır Üniversitesi, Türkiye
Doç. Dr. Ayşegül ŞENOCAK Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Makale Türü Açık Erişim Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale
Dergi Adı Journal of the Chinese Chemical Society
Dergi ISSN 0009-4536 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler SCI-Expanded
Dergi Grubu Q3
Makale Dili İngilizce
Basım Tarihi 09-2023
Cilt No 70
Sayı 9
Sayfalar 1814 / 1820
DOI Numarası 10.1002/jccs.202300165
Makale Linki http://dx.doi.org/10.1002/jccs.202300165
Özet
Background: Ionophores in the composition of potentiometric ion-selective electrodes interact directly with the analyte ion and enable the determination of ionic species in various samples. Objectives: In this study, a novel ion-selective electrode based on 5-bromosalicylaldehyde thiosemicarbazone was developed for the selective determination of Cr3+ ions. Methods: The optimum electrode composition contained ionophore, poly (vinyl chloride) (PVC), bis (2-ethylhexyl) sebacate (BEHS) and potassium tetrakis (p-chlorophenyl) borate (KTpClPB) in ratios of 4.0: 61.0: 34.0: 1.0 (mg), respectively. Potential measurements were performed using a computer-controlled multi-channel potentiometric measurement system. Results: The developed Cr (III)-selective electrode exhibited a low detection limit of 3.96 × 10−6 M over a wide concentration range of 1.0 × 10−5 – 1.0 × 10−1 M (R2: 0.9979). The electrode exhibited good selectivity towards Cr3+ ions among metal ions with different charges. The chromium (III)-selective electrode, which exhibited highly reproducible results in three different concentration ranges, also had a very fast response time of 5 s. Conclusions: The developed Cr (III)-selective electrode were successfully performed in various beverage samples. As a result, the proposed electrode can be an alternative to other analytical methods in the analysis of Cr3+ ions.
Anahtar Kelimeler
chromium(III) | ion-selective electrodes | potentiometry | thiosemicarbazone