Development of chromium(III)-selective potentiometric sensor by using synthesized pyrazole derivative as an ionophore in PVC matrix and its applications       
Yazarlar (3)
Prof. Dr. Ömer IŞILDAK Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Doç. Dr. Oğuz ÖZBEK Zonguldak Bülent Ecevit Üniversitesi, Türkiye
Prof. Dr. Meliha Burcu GÜRDERE Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Makale Türü Özgün Makale
Makale Alt Türü ESCI dergilerinde yayınlanan tam makale
Dergi Adı Journal of Analysis and Testing
Dergi ISSN 2096-241X Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler ESCI
Makale Dili İngilizce
Basım Tarihi 10-2020
Cilt No 4
Sayı 4
Sayfalar 273 / 280
DOI Numarası 10.1007/s41664-020-00147-8
Makale Linki https://doi.org/10.1007/s41664-020-00147-8
Özet
A novel poly(vinyl chloride) membrane potentiometric sensor for chromium(III) ions based on the use of 5,5′-(1,4-phenylene)bis(3-(naphthalen-1-yl)-4,5-dihydro-1H-pyrazole-1-carbothioamide) as a neutral ionophore was developed. The optimum composition of the best performing membrane contained ionophore, potassium tetrakis (p-chlorophenyl) borate (KTpClPB), dibutyl phthalate (DBP), and poly(vinyl chloride) (PVC) in the ratio of 5.5:1.5:55:38 (mg). The sensor exhibits a working concentration range of 1.0 × 10–5–1.0 × 10–1 mol L−1 and a detection limit of 1.7 × 10–6 mol L−1. The sensor shows good selectivity for chromium(III) ions over a number of cations including alkali, alkaline earth, heavy and transition metals. The response time of the sensor is 8 s. In addition, the developed sensor shows good reusability and stability. The sensor operates in the wide pH range of 5.0–11.0. The sensor could be used as an indicator electrode in the quantification of Cr3+ ions by potentiometric titration against ethylenediaminetetraacetic acid (EDTA). Finally, this sensor was successfully used for the determination of chromium(III) in commercial water, purification water and wastewater.
Anahtar Kelimeler
Chromium determination | Chromium(III)-selective | PVC membrane | Sensor