Author Page for Hilde Elise Heldal

Per- and polyfluoroalkyl substances (PFAS) in marine sediments from a Norwegian fjord near an airport: historical records, distribution, and controlling factors

Number of pages: 24 Posted: 16 Sep 2025

Stepan Boitsov, Jon Albretsen, Hilde Elise Heldal, S. Valdersnes, Bjørn Einar Grøsvik, Bashir Abdulkader and Aasim Ali

Norwegian Institute of Fisheries & Agriculture Research - Institute of Marine Research, University of Kiel - Institute of Marine Research, Norwegian Institute of Fisheries & Agriculture Research - Institute of Marine Research, Norwegian Institute of Marine Research, University of Kiel - Institute of Marine Research, Norwegian Institute of Fisheries & Agriculture Research - Institute of Marine Research and Norwegian Institute of Marine Research

Downloads 49 (1,121,190)

Abstract:

2.

Understanding Source Terms of Anthropogenic Uranium in the Arctic Ocean – First 236u and 233u Dataset in Barents Sea Sediments

Number of pages: 30 Posted: 28 Apr 2022

Jixin Qiao, Hilde Elise Heldal and Peter Steier

Technical University of Denmark - Department of Environmental Engineering, Norwegian Institute of Fisheries & Agriculture Research - Institute of Marine Research and University of Vienna

Downloads 34 (1,277,121)

Citation 1

Abstract:

3.

Radioecological status of the Bulgarian Black Sea: Implications for environmental and seafood safety

Number of pages: 65 Posted: 04 Apr 2026

Hilde Elise Heldal, Andrey Volynkin, Stepan Boitsov, Martin Wiech, Agnethe Hertzberg, Markus Lie Skadal, Violin Raykov, Veselin Atanasov, Mats Eriksson and Lene Buhl-Mortensen

Norwegian Institute of Fisheries & Agriculture Research - Institute of Marine Research, University of Kiel - Institute of Marine Research, Norwegian Institute of Marine Research, University of Kiel - Institute of Marine Research, University of Kiel - Institute of Marine Research, University of Kiel - Institute of Marine Research, Institute of Oceanology - Bulgarian Academy of Sciences, Nikola Vaptsarov Naval Academy, affiliation not provided to SSRN and University of Kiel - Institute of Marine Research

Downloads 16 (1,491,251)

Abstract:

4.

Organic and inorganic contaminants in surface and subsurface sediments from Bulgarian Black Sea waters

Number of pages: 35 Posted: 31 Mar 2026

Stepan Boitsov, Hilde Elise Heldal, Valentina Doncheva and Lene Buhl-Mortensen

Norwegian Institute of Marine Research, Norwegian Institute of Fisheries & Agriculture Research - Institute of Marine Research, affiliation not provided to SSRN and University of Kiel - Institute of Marine Research

Downloads 12 (1,534,404)

Hilde Elise Heldal

Norwegian Institute of Fisheries & Agriculture Research - Institute of Marine Research

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Scholarly Papers (4)

Per- and polyfluoroalkyl substances (PFAS) in marine sediments from a Norwegian fjord near an airport: historical records, distribution, and controlling factors

Abstract:

Understanding Source Terms of Anthropogenic Uranium in the Arctic Ocean – First 236u and 233u Dataset in Barents Sea Sediments

Abstract:

Radioecological status of the Bulgarian Black Sea: Implications for environmental and seafood safety

Abstract:

Organic and inorganic contaminants in surface and subsurface sediments from Bulgarian Black Sea waters

Abstract: