Naslov
Elbe, Weser and Ems rivers as sources of platinum to the southern North Sea

Autori
Hollister Adrienne ; Marcinek Saša ; Omanović Dario ; Schulte Mai-Brit ; Koschinsky Andrea

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

Izvornik
XVI International Estuarine Biogeochemistry Symposium : Book of Abstracts / Omanović, Dario ; Cobelo-García, Antonio ; Schäfer, Jörg - Zagreb : Institut Ruđer Bošković, 2023, 41-42

ISBN
978-953-7941-47-5

Skup
XVI International Estuarine Biogeochemistry Symposium (IEBS)

Mjesto i datum
Šibenik, Hrvatska, 23.05.2023. - 26.05.2023

Vrsta sudjelovanja
Poster

Vrsta recenzije
Nije recenziran

Ključne riječi
Platinum ; Anthropogenic input ; Estuarine mixing

Sažetak
The increasing application of rare trace metals in green technologies and in medicine results in a tremendously growing and mostly unconstrained input of many of these metals from anthropogenic sources into the environment, often significantly overprinting their geogenic background distributions. Among them is platinum (Pt) which in addition to the use in car catalysts is increasingly discharged as Pt used in cancer treatment, Drug-related Pt seems not to be retained by waste-water treatment plants and the environmental impact and potential risk for humans are not yet known. Our research cruise M169 in December 2020 has given first evidence that Pt is introduced via the rivers Elbe, Weser and Ems into the North Sea at levels significantly above ambient background concentrations of <0.5 pM in open ocean water (e.g., Suzuki et al., 2014). Pt concentrations were analysed in surface water samples collected in the rivers, estuaries and the German EEZ of the North Sea using the highly sensitive adsorptive cathodic stripping voltametric method applied by Padan et al. (2019) for samples from the Krka estuary. The Elbe and Weser rivers show highest concentrations upstream, close to the highly industrialized port cities Hamburg and Bremen, respectively ; concentrations in both rivers show a decrease during estuarine mixing (for the Weser largely conservatively and for the Elbe with a sharp decline at low salinities), and while concentrations in the North Sea are mostly lower than in the rivers, some high values indicate remobilisation from particles in seawater. Recording of Pt concentrations in the estuaries during tidal cycles indicates an inverse trend of salinity vs. Pt, confirming input from the river and dilution with seawater.

Izvorni jezik
Engleski

Znanstvena područja
Interdisciplinarne prirodne znanosti

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