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The distribution of iodine in the Croatian marine lake, Mir – The missing iodate (CROSBI ID 185715)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Žic, Vesna ; Truesdale, Victor W. ; Garnier, Cédric ; Cukrov, Neven The distribution of iodine in the Croatian marine lake, Mir – The missing iodate // Estuarine, coastal and shelf science, 115 (2012), 377-387. doi: 10.1016/j.ecss.2012.07.026

Podaci o odgovornosti

Žic, Vesna ; Truesdale, Victor W. ; Garnier, Cédric ; Cukrov, Neven

engleski

The distribution of iodine in the Croatian marine lake, Mir – The missing iodate

The marine chemistry of iodine has been studied in the marine lake, Mir, regarded as a natural reactor situated in the karstificated carbonate rocks of the Croatian Adriatic coast. The investigation covered the major variables: salinity, temperature, dissolved oxygen, pH and alkalinity, some nutrients, organic carbon, and iodide, iodate and organic-I. Lake Mir was found to be meso-trophic, with dynamic nutrient cycling of a magnitude usually associated with the temperate zone but within a Mediterranean clime. An essentially U-shaped pattern exists in the plot of nutrient concentration versus time for the June–November period studied. Together, the major variables and the nutrient chemistry confirm that Lake Mir is essentially isolated from the nearby (90 m) Adriatic seawater, and this also may explain the meso-trophic nature of the lake, with dry and wet deposition as the source of the extra nutrient. It is of note that iodate was essentially absent from Mir during the sampling period. This appears to be consistent with iodine's behaviour in the oceans in general, where iodate is reduced generally as a result of the presence of the biota. The chemistry of iodine in Lake Mir is consequently dominated by changes in iodide and organic-I concentrations, with the latter at higher concentrations than those found in seawater. Even so, the total iodine concentration in Mir is only about one-quarter of that in the adjacent Adriatic seawater, and again it is argued that this is probably a function of Lake Mir's isolation.

iodate ; iodide ; organic iodine ; nutrients ; marine lakes ; Croatia ; Dugi Otok ; Lake Mi

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Podaci o izdanju

115

2012.

377-387

objavljeno

0272-7714

1096-0015

10.1016/j.ecss.2012.07.026

Povezanost rada

Geologija, Kemija

Poveznice
Indeksiranost