Publications

Monitoring of long-range transported air pollutants. Annual report for 2010. NILU OR

Aas, W.; Solberg, S.; Manø, S.; Yttri, K.E.

Monitoring of long-range transported air pollutants. Annual report for 2012. NILU OR

Aas, W.; Solberg, S.; Manø, S.; Yttri, K.E.

Air and precipitation chemistry is determined through various monitoring programmes at several sites located in the rural areas of Norway. This report describes the results for 2012, and these are compared to the previous years.

Monitoring of microplastics and plastic additives, challenges in field and lab

Herzke, Dorte

Monitoring of microplastics in the Norwegian environment (MIKRONOR) 2023

Alling, Vanja Karin Gunilla; Lund, Espen; Lusher, Amy Lorraine; Knight, Jemmima; Hjelset, Sverre; Singdahl-Larsen, Cecilie; Martínez Francés, Elena; Rødland, Elisabeth Strandbråten; Pakhomova, Svetlana; Snekkevik, Vilde Kloster; Consolaro, Chiara; van Bavel, Bert; Schmidt, Natascha; Herzke, Dorte

The MIKRONOR monitoring program aims to establish baseline levels of microplastics in the Norwegian environment and to identify potential sources and sinks. This third MIKRONOR report focuses mainly on results from air samples, including data on tyre wear particles (TWP), as well as river and fjord surface water samples, and their correlation to rainfall and river discharge levels. Additionally, it presents data from sand samples taken from an OSPAR beach in the outer Oslofjord. The results for 2023 provide evidence of the omnipresence of microplastics in the environment. However, levels were higher near cities and populated areas, with decreasing levels further from human activities. This trend was observed in both air and surface water samples. Sand samples from the OSPAR beach in the Oslofjord showed levels of microplastics comparable to, or slightly higher than studied eabches at Svalbard. Since no other beach studies have been conducted in the MIKRONOR program, it is difficult to determine typical microplastic levels on a beach in the outer Oslofjord. Determined levels of microplastics in the beach samples were comparable to levels in marine bottom sediment at remote areas along the coast and lower than levels in sediments from the Oslofjord. Main conclusions of this report highlight the need for further research into the processes that control the levels and variations of microplastics and TWPs, such as weather conditions, river discharge, and air mass movement. Sampling of different matrices should, where possible, be conducted using similar strategies and equipment to improve the comparability of results. Additionally, the high spatial and temporal variability between samples must be considered to determine the appropriate number of analyses needed to obtain reliable results.

Norsk institutt for vannforskning og Miljødirektoratet

Monitoring of micropollutants in fish and shellfish from the Grenland fjords (S. Norway) 1997.

Knutzen, J.; Becher, G.; Biseth, A.; Bjerkeng, B.; Brevik, E.M.; Green, N.W.; Schlabach, M.; Skåre, J.U.

Monitoring of micropollutants in fish and shellfish from the Grenland fjords (S. Norway) 1999.

Knutzen, J.; Brevik, E.M.; Green, N.W.; Schlabach, M.; Skåre, J.U.

Monitoring of micropollutants in sediments and organisms from the Kristiansandsfjord 1996.

Knutzen, J.; Næs, K.; Berglind, L.; Biseth, A.; Brevik, E.M.; Følsvik, N.; Schlabach, M.

Monitoring of nitrogen oxides and suspended particulates close to two roads in Oslo during the winter season 1999/2000. NILU OR

Hagen, L.O.; Haugsbakk, I.

Monitoring of PM10 at Fiskå Mølle AS, 18 September - 18 December 2003. NILU OR

Haugsbakk, I.

Monitoring of pm10 at Pilestredet Park-gamle Rikshospitalet, Oslo 6 September-10 December 2001. 10 NILU OR

Haugsbakk, I.

Monitoring of POPs and CECs in air at the Zeppelin observatory, Ny-Ålesund

Halvorsen, Helene Lunder; Nipen, Maja; Bohlin-Nizzetto, Pernilla; Nikiforov, Vladimir; Hartz, William Frederik

Monitoring of size-segregated particulate matter fractions with optical instruments in urban areas.

Dunea, D.; Savu, T.; Marsteen, L.

The assessment of harmful PM concentrations i.e. particles with an aerodynamic diameter below 2.5 µm, requires continuous monitoring conducted for 24 hours a day, for 365 days a year. Monitoring campaigns for screening the PM levels in a particular urban area facilitate the conceiving of a continuous monitoring plan by establishing where to deploy optimally the optical instruments for on-line measurement. The paper presents the practical efficiency of the outdoor monitoring of PM size fractions using a new optical equipment i.e. Dusttrak DRX 8533 with environmental enclosure and heating module. The experiments were carried out in Targoviste city, Romania, between 2014 and 2015 within the first two phases of the ROkidAIR project (http://www.rokidair.ro) to perform a screening of the PM concentrations existing in these urban areas and to calibrate the prototype of the PM2.5 microstation developed within the project .The utilization of the DustTrak instrument showed that in heavy traffic conditions without significant industrial emissions, the most frequent PM fraction is the submicrometric one (PM1).The results pointed out the usefulness of monitoring four size segregated mass fractions and their relationship with the potential PM emission sources. Outdoor PM2.5 measurements provide key information for evaluating population exposure, planning of air quality and establishing of reliable measures that allow the lowering of PM emission.