Naslov
Determination and Reactivity of Folic Acid in Natural Waters
(Determination and reactivity of folic acid in natural waters)

Autori
Plavšić, Marta ; Lu, Xiankun ; Berg, Constant M.G. van den

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

Izvornik
35th CIESM Congress Proceedings / Briand, Frederic - Monte Carlo : CIESM, 1998, 286-287

Skup
CIESM Congress

Mjesto i datum
Dubrovnik, Hrvatska, 01.06.1998. - 05.06.1998

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Nutrients; Organic matter; Adriatic Sea

Sažetak
Folic acid (FA) was determined in natural waters (Adriatic Sea water and Rogoznica Lake water) and in algal cultures by cathodic stripping voltammetry. The concentration of FA in seawater varies between 0.03 and 4.3 nmL-1. In Rogoznica Lake (S=30-38) the concentration of FA varies between 0.18 and 4 nML-1. High concentration of FA (36 nML-1) was determined in the Rogoznica Lake at the depth below 8 m during the period of anoxia. The influence of different types of organic matter (humic and fulvic acid, polysaccharide and protein) and sulfide ions on the determination of FA in natural waters was studied. The interfering effect of humic acid could be eliminated by passing the sample through Sep-Pak-C-18 cartridges. The experiments with algal cultures (Dunaliella, Emiliania and Phaeodactylum) have shown that folic acid could be a tentative nutrient.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA