Enhanced sensitivity for Cu(II) by a salicylidine-functionalized polysiloxane carbon paste electrode
作者： H ABUSHAWISH , S SAADEH , A HUSSIEN
DOI: 10.1016/J.TALANTA.2008.04.063
关键词: Chemistry 、 Detection limit 、 Titration 、 Copper 、 Ion selective electrode 、 Complexometric titration 、 Carbon paste electrode 、 Chemically modified electrode 、 Electrode 、 Nuclear chemistry 、 Analytical chemistry
摘要: A new approach for decreasing the detection limit a copper(II) ion-selective electrode (ISE) is presented. The ISE designed using salicylidine-functionalized polysiloxane in carbon paste. This work describes attempts to develop and measurements of its characteristics. type renewable three-dimensional chemically modified could be used pH range 2.3–5.4, 2.7 × 10−8 mol L−1 (1.2 μg L−1). sensor exhibits good Nernstian slope 29.4 ± 0.5 mV/decade wide linear concentration 2.3 10−7 1.0 10−3 Cu(II). It has short response time (∼8 s) noticeably high selectivity over other Cu(II) selective electrodes. Finally, it was satisfactorily as an indicator complexometric titration with EDTA determination miscellaneous samples such urine various water samples.
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