Dissolved organic carbon and total dissolved nitrogen concentration of Lena River water from 26.08.2021 (#488) to 16.08.2022 (#612)


We collected water samples from the river surface in the center of the Olenekskaya Channel near Samoylov Island using a pre-rinsed HDPE 1 L bottle. During the open water period (June to October), water was sampled from a small boat, and during ice-covered period (November to May), through a hole drilled through the river ice. Some samples during the river ice break-up (between May and June) as well as some samples during the ice freeze-up in October were taken from the shore due to the inaccessibility of a more centered location on the river channel. For DOC and TDN, the sample was filtered through a 0.45 μm cellulose acetate filter which had been rinsed with 20 mL sample water. Samples were filled into a pre-rinsed 20 mL glass vial and acidified with 25 μL HCl Suprapur (10 M) and stored in the dark at 4°C. After transport, samples were analyzed at Lomonosov Moscow State University in Moscow, Russia (MSU). DOC and TDN concentrations were analyzed using a TOPAZ NC manufactured by Informanalitika LLC (Russia). For analysis, ISO 11905-2:1997 for nitrogen and ISO 8245:1999 for carbon was followed. Three replicate measurements of each sample were averaged and three standards (5,15, and 100 mg L-1) as well as blanks (Milli-Q water) were used to ensure high accuracy of the measurements.

DOI https://doi.pangaea.de/10.1594/PANGAEA.967437
Related Identifier IsPartOf https://doi.org/10.1594/PANGAEA.913197
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.967437
Creator Tereshina, Mariya; Erina, Oxana; Chalov, Sergey R ORCID logo; Juhls, Bennet ORCID logo; Overduin, Pier Paul ORCID logo; Morgenstern, Anne ORCID logo; Eulenburg, Antje ORCID logo
Publisher PANGAEA
Publication Year 2024
Rights Creative Commons Attribution 4.0 International; Data access is restricted (moratorium, sensitive data, license constraints); https://creativecommons.org/licenses/by/4.0/
OpenAccess false
Resource Type Dataset
Format text/tab-separated-values
Size 389 data points
Discipline Biogeochemistry; Biospheric Sciences; Geosciences; Natural Sciences
Spatial Coverage (126.460 LON, 72.368 LAT)
Temporal Coverage Begin 2021-08-26T17:30:00Z
Temporal Coverage End 2022-08-16T09:00:00Z