Naslov
Methods for the physico-chemical qualitative and quantitative characterization of sea-surface microlayer surfactants

Autori
Gašparović, Blaženka ; Frka, Sanja ; Kozarac, Zlatica ; Penezić, Abra ; Koch, Boris ; Kattner, Gerhard

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, neobjavljeni rad, ostalo

Skup
COST 735 Meeting on The role of surfactants in air-sea gas transfer

Mjesto i datum
Plymouth, Ujedinjeno Kraljevstvo, 18.03.2009. - 19.03.2009

Vrsta sudjelovanja
Pozvano predavanje

Vrsta recenzije
Nije recenziran

Ključne riječi
sea surface microlayer ; electrochemical techniques ; Fourier Transform Ion Cyclotron Resonance Mass Spectrometry ; Thin layer chromatography ; Brewster angle microscopy ; monolayer technique

Sažetak
The enrichment of the sea surface microlayer (SSM) in organic matter affects physical features of the air-sea interface thus influencing the air-sea fluxes. Hence, it is of considerable interest to get insight into morphology, structural changes and build-up mechanisms of the natural SSM. Different methods are used for the Chemical and physical characterizations, including nonspecific electrochemical techniques for the surface active substances (SAS) determination and characterization, Fourier Transform Ion Cyclotron Resonance Mass Spectrometry (FT-ICR-MS) for the molecular formulas determination. Also specific approach is lipid class determination by Thin layer chromatography. For the physical characterization we are using optical characterization, Brewster angle microscopy (BAM) that is used to study organization of surface structures and monolayer technique. It is classical method which includes measurements of the p-A isotherms and is used for determination of physical states (as gass, liquid expanded and condensed and solid phase as well as film collapse) and different phase transitions of natural microlayers as well as the elastic properties of original microlayers throughout determination of the compressibility and surface compression modulus.

Izvorni jezik
Engleski

Znanstvena područja
Geologija

POVEZANOST RADA