Results of particulate organic carbon (POC) and particulate organic nitrogen (PON) samplings from campaign ARCTIC2018 (Transdrift XXIV). Samples for POC and PON 100 µm were obtained in August and September 2018 in the Laptev and East Sibirian Sea as well as the Nansen and Amundsen Basin onboard RV Akademik Tryoshnikov. This dataset presents results of POC and PON concentration measurements (µg per L) of samples of the particle size fraction larger and smaller than 100 µm from Niskin bottles of a water sampler rosette. Samples were acidified before elemental analyzer measurements to remove carbonates. For details see Rogge et al. 2022 (doi:10.21203/rs.3.rs-1617794/v1).