Naslov
Development Of Electrochemical Sensor For Sea-surface Microlayer Characterization By Use Of DOPC

Autori
Gašparović, Blaženka ; Frka, Sanja ; Kozarac, Zlatica, Nelson, Andrew

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

Izvornik
Proceedings of the 4th Croatian Symposium on Electrochemistry / Gojo, Miroslav ; Mandić, Zoran - Zagreb : Hrvatsko društvo kemijskih inženjera i tehnologa (HDKI), 2006, 245-253

Skup
4th Croatian Symposium on Electrochemistry

Mjesto i datum
Primošten, Hrvatska, 28.05.2006. - 01.06.2006

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Domaća recenzija

Ključne riječi
sea surface microlayer; impedance spectroscopy; fractal analysis

Sažetak
We report on the development of an electrochemical impedance sensor for physico-chemical characterization of sea surface microlayers by using the impedance signal in combination with fractal analysis. The platform for this sensor is a mercury drop electrode coated with a defect free monolayer of dioleoyl phosphatidylcholine (DOPC). The sensor involves the formation of a recognition complex between the sensing DOPC and the sea surface microlayer forming material. To demonstrate qualitative and quantitative selectivity of the sensor response the changes in the impedance signal observed for different sea surface microlayer extracts are compared. The extraction of microlayer forming material was performed by organic solvents of different polarities. It is demonstrated that impedance spectroscopy is a powerful tool for the analysis of interfacial properties of the coated electrode and of recognition processes at the modified surface.

Izvorni jezik
Engleski

Znanstvena područja
Geologija

POVEZANOST RADA