Naslov
Voltammetric determination of dissolved nitrous oxide

Autori
Velić, Natalija ; Samardžić, Mirela ; Sak-Bosnar, Milan ; Šantek, Božidar

Izvornik
International Journal of Electrochemical Science (1452-3981) 6 (2011), 4; 1206-1215

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
nitrous oxide ; platinum electrode ; voltammetric determination ; cathodic reduction ; solution

Sažetak
The platinum disk electrode has been tested as a working electrode for the cathodic reduction of N2O in aqueous solutions using 0.2 M K2SO4 as supporting electrolyte, buffered at pH = 12, and a scan rate of 100 mV s-1. The well- resolved cathodic peaks were observed for the solutions of N2O in the concentration range of 0 – 10.34 mM. A strong linear correlation was seen between the cathodic peak current and N2O concentration. The detection limit of the developed method amounts to c(N2O) = 0.0104 mM, and the quantification limit amounts to c(N2O) = 0.0191 mM. The error of these determination methods was between 4.0 and 5.1 % for higher N2O concentrations (c(N2O) > 1 mM) and 7.4 to 12.3 % for N2O concentrations below 0.5 mM. The presence of O2 and CO2 did not influence the determination of N2O in solution.

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Biotehnologija

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