We are prepared for our second cruise in the Lofoten-Vesterålen with RV “G.O. Sars” that is owned by the Institute of Marine Research (IMR) in Bergen. We will start on 29th of November. We are planning to collect column water from ROV and rosette, sediments and pore water for DOC, DIC, nutrients, methane, groundwater for endmembers, biological samples etc. Keep fingers crossed! Fot. Reza Saghravani
GasBench II, which is universal on-line gas preparation and introduction system. The combination of GasBench interface and Isotope Ratio Mass Spectrometry is a promising method for the δ15N analysis of samples containing trace amounts of nitrogen. Some time ago we solved problem with high background of nitrogen in the atmosphere and RSD of obtained analysis! Tests were prepared in a special glovebox designed by Dr Marta Borecka and made by Mr. Zbigniew Ciećwierz. Now we will try to figure out troubles with background of mass 30N2. Establishment of the methodology on GasBench/isotope ratio mass spectrometry (GasBench/IRMS) system will allow us to determine anammox and denitrification processes occurring in the marine environment. Fot. Magdalena Diak
Sediment core subsampling was done by PhD student Reza Saghravani, Principal Investigator of ArcticSGD project Dr. Beata Szymczycha and Dr. Eng. Magdalena Diak. Core were cut every 10 cm. Dr. Aleksandra Winogradow centrifuges the sediment to extract pore water from cores for further analysis. Special thanks to Prof. Zajaczkowski and his team in Paleoceanography Department. Fot. Reza Saghravani and Magdalena Diak
RAD7 Radon Detector – Real-time Continuous Radon Monitor with Spectral Analysis – is our new purchase. This equipment will be used for 222Rn measurements to trace submarine groundwater discharge. RAD7 was financed by the Norwegian Financial Mechanism 2014–2021 (85%) and national co-financing (15%) within Basic Research Programme. The RAD7’s technology (electrostatic precipitation followed by high-resolution alpha spectrometry) is the only one that gives clear separation between the various radon progeny species (‘species idenfitication’). That allows the instrument to completely reject the counts from the lead-210 background, and also make a simultaneous, independent measurement of radon and thoron by summing counts in each of four energy windows. The DURRIDGE RAD7 technology was invented by Lee Grodzins and his PhD student Stephen Shefsky at MIT in the early 90s, and commercialised as the RAD7. Fot. Durridge https://durridge.com/
We would like to proudly announce and congratulate Dr. Wei-Li Hong, one of the ArcticSGD Polish-Norwegian Research Project collaborators just published an article in the Nature Communications journals. Great job! https://www.nature.com/articles/s41467-021-26549-5
