VSE knjižnice (vzajemna bibliografsko-kataložna baza podatkov COBIB.SI)
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Dissolved gaseous mercury production and sea-air gaseous exchange in impacted coastal environments of the northern Adriatic SeaFloreani, Federico ...The northern Adriatic Sea is well known for mercury (Hg) contamination mainly due to historical Hg mining which took place in Idrija (Slovenia). The formation of dissolved gaseous mercury (DGM) and ... its subsequent volatilisation can reduce the amount of Hg available in the water column. In this work, the diurnal patterns of both DGM production and gaseous elemental Hg (Hg0) fluxes at the water-air interface were seasonally evaluated in two selected environments within this area, a highly Hg-impacted, confined fish farm (VN: Val Noghera, Italy) and an open coastal zone less impacted by Hg inputs (PR: Bay of Piran, Slovenia). A floating flux chamber coupled with a real-time Hg0 analyser was used for flux estimation in parallel with DGM concentrations determination through in-field incubations. Substantial DGM production was observed at VN (range = 126.0–711.3 pg L−1) driven by both strong photoreduction and possibly dark biotic reduction, resulting in higher values in spring and summer and comparable concentrations throughout both day and night. Significantly lower DGM was observed at PR (range = 21.8–183.4 pg L−1). Surprisingly, comparable Hg0 fluxes were found at the two sites (range VN = 7.43–41.17 ng m−2 h−1, PR = 0–81.49 ng m−2 h−1), likely due to enhanced gaseous exchanges at PR thanks to high water turbulence and to the strong limitation of evasion at VN by water stagnation and expected high DGM oxidation in saltwater. Slight differences between the temporal variation of DGM and fluxes indicate that Hg evasion is more controlled by factors such as water temperature and mixing conditions than DGM concentrations alone. The relative low Hg losses through volatilisation at VN (2.4–4.6% of total Hg) further confirm that static conditions in saltwater environments negatively affect the ability of this process in reducing the amount of Hg retained in the water column, therefore potentially leading to a greater availability for methylation and trophic transfer.Vir: Environmental pollution. - ISSN 0269-7491 (Vol. 332, [art.] 121926, Sept. 2023, [1]-16 str.)Vrsta gradiva - članek, sestavni del ; neleposlovje za odrasleLeto - 2023Jezik - angleškiCOBISS.SI-ID - 158532099
Avtor
Floreani, Federico |
Barago, Nicolò |
Klun, Katja, 1988- |
Faganeli, Jadran |
Covelli, Stefano
Teme
Idrija mercury mine |
mercury evasion |
fish farm |
flux chamber |
water-air exchange |
Adriatic Sea |
Idrijski rudnik živega srebra |
ribogojnica |
pretočna komora |
izmenjava voda-zrak |
Jadransko morje
Vnos na polico
Trajna povezava
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Faktor vpliva
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Leto | Faktor vpliva | Izdaja | Kategorija | Razvrstitev | ||||
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
Baze podatkov, v katerih je revija indeksirana
Ime baze podatkov | Področje | Leto |
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Povezave do osebnih bibliografij avtorjev | Povezave do podatkov o raziskovalcih v sistemu SICRIS |
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Floreani, Federico | |
Barago, Nicolò | |
Klun, Katja, 1988- | 34499 |
Faganeli, Jadran | 05249 |
Covelli, Stefano |
Vir: Osebne bibliografije
in: SICRIS
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