Δ14C and δ 13C as tracers of organic carbon in Baltic Sea sediments collected in coastal waters off Lithuania and in the Gotland Deep

Lujaniené, G.; Mažeika, Jonas; Li, Hongchun; Petrošius, Rimantas; Barisevičiūtė, Rūta; Jokšas, Kęstutis; Remeikaitė-Nikienė, Nijolė; Malejevas, Vitalijus; Garnaga, Galina; Stankevičius, Algirdas; Povinec, Pavel P.

doi:10.1007/s10967-015-4547-x

Cited by 6 publications

(2 citation statements)

References 34 publications

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“…38,39 Selected end-member values for δ 13 C mar and δ 13 C ter in the Baltic Sea were −22 and −28‰, respectively, based on the literature. 40,41 For chemical analysis, surface sediment and settling particles were freeze-dried (Hetosicc, Birkerod Denmark) and grounded to fine powder. Sediment (4 g) and settling particles (2.5 g) were weighed in cellulose extraction thimbles (19 × 90 Munktell and 25 × 90 mm Whatman) and Soxhlet-extracted in 30 mL (sediment) and 50 mL (settling particles) extractors as described above for XAD-samplers.…”

Section: ■ Materials and Methodsmentioning

confidence: 99%

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Effects of Organic Carbon Origin on Hydrophobic Organic Contaminant Fate in the Baltic Sea

Nybom

Horlitz

Gilbert

et al. 2021

Environ. Sci. Technol.

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The transport and fate of hydrophobic organic contaminants (HOCs) in the marine environment are closely linked to organic carbon (OC) cycling processes. We investigated the influence of marine versus terrestrial OC origin on HOC fluxes at two Baltic Sea coastal sites with different relative contributions of terrestrial and marine OC. Stronger sorption of the more than four-ring polycyclic aromatic hydrocarbons and penta-heptachlorinated polychlorinated biphenyls (PCBs) was observed at the marine OC-dominated site. The site-specific partition coefficients between sediment OC and water were 0.2−1.0 log units higher at the marine OC site, with the freely dissolved concentrations in the sediment pore-water 2−10 times lower, when compared with the terrestrial OC site. The stronger sorption at the site characterized with marine OC was most evident for the most hydrophobic PCBs, leading to reduced fluxes of these compounds from sediment to water. According to these results, future changes in OC cycling because of climate change, leading to increased input of terrestrial OC to the marine system, can have consequences for the availability and mobility of HOCs in aquatic systems and thereby also for the capacity of sediments to store HOCs.

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Section: ■ Materials and Methodsmentioning

confidence: 99%

“…Marine organic matter typically has δ 13 C values between −20 and −22‰ and terrestrial vascular plant material between −23 and −30‰. , Selected end-member values for δ 13 C mar and δ 13 C ter in the Baltic Sea were −22 and −28‰, respectively, based on the literature. , …”

Section: Methodsmentioning

confidence: 99%

Effects of Organic Carbon Origin on Hydrophobic Organic Contaminant Fate in the Baltic Sea

Nybom

Horlitz

Gilbert

et al. 2021

Environ. Sci. Technol.

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New ultra-sensitive radioanalytical technologies for new science

Povinec

2018

J Radioanal Nucl Chem

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Recent developments in radiometric and mass spectrometry technologies have been associated in the radiometric sector mainly with underground operations of large volume Ge detectors, while the mass-spectrometry sector, represented mainly by accelerator mass spectrometry and inductively coupled plasma mass spectrometry has become the most sensitive technique for ultra-low-level analyses of long-lived radionuclides. These new developments have had great impact on investigations of rare nuclear processes and applications of radionuclides in environmental, life and space sciences. New scientific investigations have been carried out therefore which have not been possible before either because of lack of sensitivity or required large sample size.

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Sources of carbon isotopes in Baltic Sea sediments

Lujaniené

Jokšas

et al. 2019

J Radioanal Nucl Chem

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Δ14C and δ 13C as tracers of organic carbon in Baltic Sea sediments collected in coastal waters off Lithuania and in the Gotland Deep

Cited by 6 publications

References 34 publications

Effects of Organic Carbon Origin on Hydrophobic Organic Contaminant Fate in the Baltic Sea

Effects of Organic Carbon Origin on Hydrophobic Organic Contaminant Fate in the Baltic Sea

New ultra-sensitive radioanalytical technologies for new science

Sources of carbon isotopes in Baltic Sea sediments

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