Concentrations of particulate organic carbon in the Kara Sea and in the Obskaya Guba (Ob River estuary) in September 1993, supplement to: Alexandrova, Olga A; Shevchenko, Vladimir P (1997): Particulate lipid composition in the waters of the Ob River estuary and in the Kara Sea. Translated from Okeanologiya, 1997, 37(5), 715-722, Oceanology, 37(5), 643-650

• Main Authors: Alexandrova, Olga A, Shevchenko, Vladimir P
• Format: Dataset
• Language: English
• Published: PANGAEA - Data Publisher for Earth & Environmental Science 1997
• Subjects: Event label; Latitude of event; Longitude of event; Elevation of event; DEPTH, water; Suspended particulate matter; Carbon, organic, particulate; Carbon, organic, total; Transparent bottle 150L; Filtration; Calculated; Carbon analyser AN-7529, 7560; DM49; Dmitry Mendeleev; Archive of Ocean Data ARCOD; Arctic; Kara Sea; Obskaya Guba; ob river
• Online Access: https://dx.doi.org/10.1594/pangaea.760163; https://doi.pangaea.de/10.1594/PANGAEA.760163

Contents and distribution of particulate lipids were studied by thin-layer chromatography technique with flame ionization detection (Iatroscan TH-10) along the transect from the Ob River towards the Kara Sea. Lipid contents range from 18.4 to 266 µg/l with, average 84.97 µg/l, which comprises from 4.06 to 58.32 % of total particulate organic matter. Principal constituents of particulate lipids are hydrocarbons (32.14 % of total lipids on the average), polar compounds (29.85 %), wax and sterol esters (13.04 %), and mono- and diglycerides (12.52 %). Secondary components are presented by fatty acid esters (5.14 %), free fatty acids (4.56 %), triglycerides (2.32 %), and sterols (1.04 %). Specific composition of particulate lipids along the Ob River - Kara Sea transect is formed under strong impact of river run-off. Particulate lipid composition reflects differences between processes of organic matter transformation in estuarine and marine parts of the transect, as well as peculiarities of species composition of Arctic living organisms.