A. Islamnezhad, N. Mahmoodi
Apr 15, 2011
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Influential Citations
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Journal
Desalination
Abstract
A PVC membrane Cu 2+ ion-selective electrode has been constructed using a new compound ethyl 1,2,3,4-tetrahydro-4-(4-methoxyphenyl)-6-methyl-2-oxopyrimidine-5-carboxylate (ETMOC) as a neutral ionophore. The electrode works properly. It responds to Cu 2+ ion with a sensitivity of 29.5 ± 0.2 mV/decade over the range of 1.0 × 10 ―9 to 5.0 × 10 ―1 M at pH3.0-8.0.The limit of detection was 4.5 × 10 ―10 M. It has a response time of < 6 s and can be used for at least 3 months without any divergence in potentials. The proposed electrode shows fairly good discrimination of Cu 2+ ion from several cations. The effect of organic solvents on electrode response shows that this electrode can be used in methanol and ethanol media until 15% (v/v) concentration without interference. This sensor was used to determination of Cu 2+ concentration in Tea leaves, Milk powder and Drinking water samples.