Title of article
Nano-molar Monitoring of Copper ions in Waste Water Samples by a Novel All-Solid-State Ion Selective Electrode (ASS-ISE)
Author/Authors
Ganjali, Mohammad Reza Center of Excellence in Electrochemistry - School of Chemistry - University of Tehran , Mehdi, Esmaeili Bidhendi University of Tehran , Davarkhah, Nazila Center of Excellence in Electrochemistry - School of Chemistry - University of Tehran , Pirali-Hamedani, Morteza Department of Medicinal Chemistry - Faculty of Pharmacy - Tehran University of Medical Sciences
Pages
11
From page
187
To page
197
Abstract
The focus of this work is on the preparation of a Cu2+ all-solid-state ion selective electrode (ASS-ISE) to be used in the analysis of copper ions in complex samples. The ASS-ISE was composed of a conductive substrate of graphite-epoxy resin on a copper wire. This conductive substrate was further coated with a layer of Cu2+-selective PVC membrane, comprising 32% of PVC, 57% of nitrobenzene (NB) as the plasticizing solvent, 2% of an ionic additive (i.e. sodium tetraphenyl borate (NaTPB)), and 9% of an organic ligand named 3-(2-methyl-2,3-dihydrobenzothiazol-2-yl)-2H-chromen-2-one (L) as the selective ionophore.
The device with the optimal composition had a Nernstian response of 29.3±0.3 mV/decade
from 1.0×10-8 M to 1.0×10-3 M of the analyte and its lower detection limit was estimated at
be 4.0×10-9 M. The ASS-ISE showed excellent selectivity for the target ion in the presence of
various common interfering ions, and was found to be satisfactorily applicable to the analysis
of copper electroplating waste water samples.
Keywords
Sensor , All solid state , Potentiometry , Copper , Waste water
Journal title
Astroparticle Physics
Serial Year
2017
Record number
2418755
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