Publications

Some facts on plastic additives

Nikiforov, Vladimir

Shortening PFAS molecules in the lab and shortages of PFAS understanding in the offices

Nikiforov, Vladimir

Does PTFE Degrade at High Pressure in the Deep Ocean? a Model Process Observed in a Common LC-Pump

Nikiforov, Vladimir

Tris(2,4-Ditert-Butylphenyl)Tiophosphate - A New Plastic Additive or a Transformation Product of a Common Plastic Additive? Report on the First Time Detection, Structure Elucidation and Synthesis of an Authentic Sample

Nikiforov, Vladimir; Herzke, Dorte; Huizer, Maria Marit

Quality assurance of precipitation measurements in Norway

Guerreiro, Cristina; Halvorsen, Helene Lunder

Hvordan kan EU/Copernicus atmosfæretjeneste (CAMS: Copernicus Atmospheric Monitoring Service) være relevant for Norge?

Randall, Scott Gary; Tarrasón, Leonor; Wærsted, Eivind Grøtting

Støv – hva er det og hvordan måler vi det?

Weydahl, Torleif; Hak, Claudia

Field evaluation of three Vaisala sensor system units (AQT530). Gaseous compounds - O3, NO2, NO.

Hak, Claudia; Dauge, Franck Rene

NILU

Aerosol and dynamical contributions to cloud droplet formation in Arctic low-level clouds

Motos, Ghislain; Freitas, Gabriel; Georgakaki, Paraskevi; Wieder, Jörg; Li, Guangyu; Aas, Wenche; Lunder, Chris Rene; Krejci, Radovan; Pasquier, Julie Thérèse; Henneberger, Jan; David, Robert Oscar; Ritter, Christoph; Mohr, Claudia; Zieger, Paul; Nenes, Athanasios

Forskere har kartlagt hvor i verden landbruk fortrenger biologisk mangfold

Solbakken, Christine Forsetlund

Norges forskningsråd

Etter flere år har forskerne fått svar på hvordan biologiske partikler påvirker skyene over Arktis

Solbakken, Christine Forsetlund

Norges forskningsråd

Deployment and Evaluation of Networks of Open Air Quality Sensor Systems - Experiences from deployments in Stavanger and Oslo

Schneider, Philipp; Vogt, Matthias; Haugen, Rolf; Hassani, Amirhossein; Castell, Nuria; Peters, Jan; Yatkin, Sinan; Gerboles, Michel; Matheeussen, Christina; Davila, Silvije; Signorini, Marco; Dauge, Franck Rene; Skaar, Jøran Solnes; Bartonova, Alena

Analysis of nitro- and oxy-PAH emissions from a pilot scale silicon process with flue gas recirculation

Arnesen, Kamilla; Andersen, Vegar; Jakovljevic, Katarina; Enge, Ellen Katrin; Gaertner, Heiko; Aarhaug, Thor Anders; Einarsrud, Kristian Etienne; Tranell, Maria Gabriella

Silicon alloys are produced by carbothermic reduction of quartz in a submerged arc furnace. This high-temperature pyrolytic process is a source of polycyclic aromatic hydrocarbons (PAHs), which are a group of aromatic organic molecules with known mutagenic and carcinogenic properties. In this study, the emission of oxy- and nitro-PAHs from a pilot-scale Si furnace, with varying process conditions such as oxygen level, flue gas recirculation (FGR), and off-gas flow, was investigated. Analysis shows the presence of both oxy- and nitro-PAH species in all experiments, believed to be formed from radical-induced substitution reactions initiated by SiO combustion and NOx formation. During Si production without FGR, the levels of oxy- and nitro-PAHs range between 1.1 and 4.4 μg Nm−3, independent of the flue gas flow rate. With increasing FGR (0–82.5%) and decreasing oxygen level (20.7–13.3%), the concentrations of both oxy- and nitro-PAHs increase to 36.6 and 65.9 μg Nm−3, respectively. When the levels of substituted PAHs increase, species such as 4-nitropyrene and 1,2-benzanthraquinone are in abundance compared to their parent PAHs. Experiments at lower flue gas flow (500 Nm3 h−1 versus 1000 Nm3 h−1) generally produce less substituted PAHs, as well as SiO2 particulate matter and NOx, where the latter two parameters have a 99% correlation in this study.

Royal Society of Chemistry (RSC)