Salman M. Saadeh, Hazem M. Abu Shawish, Mohammed Y. Abu Foul
الملخص الانجليزي
nterestingly, this work presents two newly designed copper(II)-selective carbon paste electrodes with distinctively low detection limits which is attained utilizing the Schiff base ligands 2-(2-hydroxyphenylimino)carboxythiophene (L1) and 1,2-di(2-carboxythiopheneimino] benzene (L2). The sensors exhibit a Nernstian slope of
29.10 and 29.28 mVdecade1 for Cu(II) ion over a wide concentration range from 1.18 107 – 1.00 102 M
and 7.91 108 – 1.00 102 M with the detection limits of 1.00 107 M and 5.28 108 M for L1 and L2
respectively. These sensors exhibit short response time (about 2 s) and good stability over the pH range 2.5–5.8. In
addition, the present sensors show fairly good selectivity toward copper(II) ion in comparison to other common
cations. Furthermore, they were satisfactorily used as indicator electrodes in complexometric titration with EDTA
and for determination of copper(II) in water, tea and urine samples
تاريخ النشر
11/01/2022
الناشر
Elsevier
رقم المجلد
3
رقم العدد
رابط DOI
doi.org/10.1016/j.sintl.2021.100151
الصفحات
100151
الكلمات المفتاحية
SNO-Tridentate and SNNS-Tetradentate ligands Sensors Potentiometry Ion-selective electrod
حازم محمد أبو شاويش | Hazem Mohamed Abu Shawish | 1560