Naslov
Impedimetric Au-NTA sensor for lead determination

Autori
Palčić, Marina ; Kereković, Irena ; Milardović, Stjepan ; Grabarić, Zorana

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
XIV. Ružičkini dani, "Danas znanost - sutra industrija" / Jukić, Ante - Zagreb : Osijek : Hrvatsko društvo kemijskih inženjera i tehnologa (HDKI) ; Prehrambeno tehnološki fakultet Sveučilišta Josipa Jurja Strossmayera u Osijeku, 2013, 64-75

ISBN
978-953-6894-51-2

Skup
Međunarodni znanstveno-stručni skup 14. Ružičkini dani "Danas znanost - sutra industrija"

Mjesto i datum
Vukovar, Hrvatska, 13-15.09.2012

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Recenziran

Ključne riječi
impedimetric sensor ; lead ; NTA ; self assembled monolayers

Sažetak
A self assembled monolayer (SAM) of cysteamine was prepared on the surface of gold disc electrode and further modified with nitrilotriacetic acid (NTA). Sensor’s surface characterization was performed by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) in the presence of potassium hexacyanoferrate (II)/(III) redox pair. Complexation of NTA with Pb2+ was tested by EIS measurements using the same redox pair as in the surface characterization. Electrode response (log ∆Rct) was linearly proportional to log c(Pb2+) with correlation coefficient R2 = 0.9865 for measurements in buffer pH = 4.60 and R2 = 0.9931 for pH = 7.06 in the concentration range of 0.06- 66 µmol/L.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

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