A Potentiometric Sensor for the Determination of Pb(II) Ions in Different Environmental Samples       
Yazarlar (4)
Doç. Dr. Oğuz ÖZBEK Zonguldak Bülent Ecevit Üniversitesi, Türkiye
Hayreddin Gezegen
Sivas Cumhuriyet Üniversitesi, Türkiye
Alper Çetin
Zonguldak Bulent Ecevit University, Türkiye
Prof. Dr. Ömer IŞILDAK Tokat Gaziosmanpaşa Üniversitesi, Türkiye
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale
Dergi Adı Chemistryselect
Dergi ISSN 2365-6549 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler SCI-Expanded
Dergi Grubu Q3
Makale Dili İngilizce
Basım Tarihi 09-2022
Cilt No 7
Sayı 33
Sayfalar 202202494 / 0
DOI Numarası 10.1002/slct.202202494
Makale Linki http://dx.doi.org/10.1002/slct.202202494
Özet
In this study, a novel PVC-based membrane containing (E)-2-(1-(4-(3-(4-chlorophenyl)ureido)phenyl)ethylidene)hydrazine carbothioamide (5) as an electroactive component (ionophore) along with potassium tetrakis (p-chlorophenyl) borate (KTpClPB) and bis(2-ethylhexyl)adipate (DEHA) in the ratio 4.0 : 32.0 : 1.0 : 63.0 (ionophore:PVC:KTpClPB:DEHA) (w/w) was used to develop a lead(II)-selective potentiometric sensor. The sensor exhibited a Nernstian response over a wide concentration range from 1.0×10−5 to 1.0×10−1 mol L−1 with a slope of 28.0±2.0 mV/decade, and a detection limit of 1.65×10−6 mol L−1. It displayed very good selectivity towards Pb(II) ions over other cationic species. The lead(II)-selective sensor showed a fast response time of 5 s, good repeatability, and it worked in the broad pH range of 5.0–11.0. The sensor could be used as an indicator electrode in the quantification of Pb(II) by potentiometric titration against ethylenediaminetetraacetic acid (EDTA). In addition, this sensor was applied for the direct determination of Pb(II) in different water samples including spring water, purification water, commercial water, waste water and in a waste battery sample.
Anahtar Kelimeler
Electroanalytical methods | ion-selective electrodes | ionophore | PVC membrane