Naslov
Electrochemical adhesion imaging of marine particles

Autori
Ivošević DeNardis, Nadica ; Žutić, Vera ; Svetličić, Vesna

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
ASLO Aquatic Science Meeting 2009 : Meeting Abstract / - Nica, 2009, 125-125

Skup
ASLO Aquatic Science Meeting

Mjesto i datum
Nica, Francuska, 25.01.2009. - 30.01.2009

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
vesicles; gel microparticles; electrochemical adhesion imaging

Sažetak
Electrochemical adhesion imaging presents an approach for in situ characterization of microparticles in aqueous environments. Confined organic microparticles, such as vesicles, droplets and cells with fluid membranes can be characterized through appearance of well-defined adhesion signals due to their fast attachment, deformation and spreading at a charged aqueous mercury interface. On the other hand, gel microparticles with flexible 3D network do not form permanent contact with the electrode. The adhesion signals at the mercury electrode immersed in seawater capture the primary structure of microparticles. Incidents and shape of adhesion signals reflect particle size, concentration, polydispersity and reactivity. Major distinction in adhesion behavior between various classes of marine particles (unicellular algae, liposomes, droplets and polymer gels) in seawater was identified through appearance of adhesion signals at characteristic potentials of mercury/seawater interface. Advantages of this approach, as revealed from monitoring and mesocosmos experiments in the Northern Adriatic are single particle analysis, in situ fast sample processing preventing loss in primary particle structure.

Izvorni jezik
Engleski

Znanstvena područja
Geologija, Kemija

POVEZANOST RADA