Naslov
Bioavailability of mercury in saline waters: field experiment

Autori
Odžak, Nikša ; Matić, Mirjana ; Kljaković-Gašpić, Zorana ; Zvonarić, Tomislav ; Barić, Ante

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

Izvornik
RMZ-Materials and Geoenvironment / - Ljubljana : Inštitut za rudarstvo, geotehnologijo in okolje ; Naravoslovnotehniška fakulteta, 2004, 1275-1278

Skup
7th International Conference on Mercury as a global Pollutant (ICMGP)

Mjesto i datum
Ljubljana, Slovenija, 28.06.2004. - 02.07.2004

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Recenziran

Ključne riječi
bioavailability ; mercury ; mussels Mytilus galloprovincialis ; biofouling organisms

Sažetak
Trace metal concentrations in the water column (dissolved and particulate), environmental and biological conditions are the parameters determining metal accumulation in marine organisms. To study bioavailability of mercury, marine mussels Mytilus galloprovincialis were transferred from the clean area (Mali Ston Bay, Croatia) to the experimental station in polluted area (Kastela Bay, Croatia). The experiments were conducted twice (in summer and in winter). During those two experimental periods, each lasting 6 weeks, the mussels, suspended matter (sediment traps), biofouling organisms (plexiglass plates) and water were sampled weekly. At the same station, temperature, pH, O2, salinity and sea level were measured. Also, meteorological situation (wind direction and velocity, rain quantity and air pressure) was monitored. The results of this study showed that food is the main source of Hg for filter-feeding marine mussels Mytilus galloprovincialis, while water is the main source of Hg for the communities of biofouling organisms. Bioavailability of Hg was higher for mussels and lower for biofouling organisms in winter experimental period. Bioavailability is highly dependent on meteorological and oceanographic characteristics of the experimental area, because they influence both metal content and speciation in water, and metabolic rate and physiological behavior of an organism. Further, biological factors (e.g. age, size) affect mercury uptake in marine organisms.

Izvorni jezik
Engleski

Znanstvena područja
Geologija, Kemija

Napomena
Indeksiran u Chemical Abstracts

POVEZANOST RADA