A Copper(II) Ion-Selective Potentiometric Sensor Based on N ',N ',N '',N '''-Tetrakis(2-pyridylmethyl)-1,4,8,11-tetraazacyclotetradecane in PVC Matrix
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AutoriPetković, Branka B.
Sovilj, Sofija P.
Budimir, Milana V.
Simonović, Ranko M.
Jovanović, Vladislava M.
Članak u časopisu (Objavljena verzija)
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The simple PVC-based membrane containing N',N',N '',N '''-tetrakis(2-pyridylmethyl)-1,4,8,11-tetraazacyclotetradecane (tpmc) as an ionophore and dibutyl phthalate as a plasticizer, directly coated on a glassy carbon electrode was examined as a new sensor for Cu2+ ions. The potential response was linear within the concentration range of 1.0x10(-1)-1.0 x 10(-6)M with a Nernstian slope of 28.8 mV/decade and detection limit of 7.0 x 10(-7)M. The electrode was used in aqueous solutions over a wide pH range (1.3-6). The sensor exhibited excellent selectivity for Cu2+ ion over a number of cations and was successfully used in its determination in real samples.
Ključne reči:Cu(II) potentiometric sensors / Coated glassy carbon rod / Ionophore / N ',N ',N '',N '''-Tetrakis(2-pyridylmethyl)-1,4,8,11-tetraazacyclotetradecane / Waste waters
Izvor:Electroanalysis, 2010, 22, 16, 1894-1900
- Wiley-Blackwell, Malden