Sources of carbon isotopes in Baltic Sea sediments
Journal
Journal of Radioanalytical and Nuclear Chemistry
Journal Volume
322
Journal Issue
3
Pages
1461-1467
Date Issued
2019
Author(s)
Lujanienė, G.
Li, H.-C.
Jokšas, K.
Šemčuk, S.
Remeikaitė-Nikienė, N.
Stirbys, V.
Garnaga-Budrė, G.
Stankevičius, A.
Abstract
Radiocarbon and specific phospholipid-derived biomarkers were used to trace chemical warfare agents (CWA) at the Gotland Deep dumping site of chemical weapons. Δ14C measurements in different classes of organic fractions, such as total lipid extracts (TLE), humic acids (HA) and phospholipid-derived fatty acids (PLFA) isolated from bottom sediments have been applied. In addition, specific PLFA biomarkers extracted from sediments were analyzed by gas chromatography. Contrary to Δ14CHA, the most depleted Δ14CTOC and Δ14CTLE values were found in bottom sediments samples collected at the CWA dumpsite, which were attributed to different carbon sources.
Type
journal article