Rapport

Content and migration of chemical additives from plastic products

Bohlin-Nizzetto, Pernilla

NILU has, on behalf of the Norwegian Environment Agency, performed chemical analyses of a selection of additives in plastic products. The goal was to identify content and migration of the chemical additives in and from the products to air and surfaces of the products at room temperature. The plastic products covered extension cord, sockets, flooring, wall papers, upholstery, PC-mouse and PCs. Targeted chemicals were organophosphorous flame retardants (OPFRs), brominated flame retardants (BFRs) including TBBPA, and chlorinated substances. TPHP (triphenyl phosphate) was detected in most sample types, but the highest concentrations were found for TBEP (tris(2-butoxyethyl)phosphate. The highest number of compounds were detected in the PC-mouses and high levels were also found in the surface wipes on PC-mouses. None of the targeted compounds were detected in the air samples.

NILU

Screening of Chlorinated Paraffins, Dechloranes and UV-filters in Nordic Countries

Schlabach, Martin; Borgen, Anders; Bæk, Kine; Kringstad, Alfhild

In 2019, the Nordic screening group decided to perform a Nordic screening on chlorinated paraffins, dechloranes and UV-filters. These compounds are used in a wide range of applications. They all have long range transport characteristics and can potentially be regulated under the Stockholm POP convention. However, there are still huge data gaps, which need to be addressed in order to fulfill regulation requests. Several topics and questions were in focus for more measurements and a deeper understanding: (1) importance of long-range atmospheric transport and deposition, (2) differences/similarities in terrestrial versus marine food chains, and (3) variations between the Nordic countries and between urban and remote areas. Based on these priorities, availability of samples, and other practical reasons, samples from different Nordic countries, different environments, and both urban and remote places were selected. This study includes analysis of the compounds in air, marine and freshwater fish and marine mammals and bird eggs, but as the chlorinated paraffins also have been found to accumulate in the terrestrial food web, terrestrial mammals and bird eggs were included as well. Additionally, samples of pine needles were analysed both to look at the possibility for long range transport and to investigate it as a possible source of chlorinated paraffins for the terrestrial mammals.

Nordic Council of Ministers

Monitoring atmospheric composition and deposition in Norway

Aas, Wenche; Bohlin-Nizzetto, Pernilla; Hak, Claudia; Pfaffhuber, Katrine Aspmo; Uggerud, Hilde Thelle

The Norwegian monitoring programme is set up to meet national and international obligations and needs for measurement data with a long-term commitment. The data are important for compliance monitoring as well as input for effect studies. The monitoring of atmospheric composition and deposition are organised under national programmes mainly funded by the Norwegian Environment Agency in addition to some direct support from the Ministry of Climate and Environment. NILU – Norwegian Institute for Air Research is responsible for the daily operation and reporting of the results from this monitoring. The monitoring aim to fulfil several inter-connected purposes and is divided in four main programmes: transboundary fluxes, contaminants, climate change and the ozone layer. In addition, regularly moss surveys are conducted to assess atmospheric deposition of pollutants such as heavy metals.

NILU

Hydro Aluminium AS. Measurements of CF4 and C2F6 emissions from Norsk Hydro's aluminium smelter at Husnes, Norway.

Schmidbauer, Norbert; Hermansen, Ove; Lunder, Chris Rene

NILU and Hydro Aluminium performed a test campaign for measurements of CF4 and C2F6 for stack emissions at Husnes Aluminium Smelter. Time-integrated samples were taken with evacuated canisters combined with low-flow restrictors for continuous sampling periods as long as 6 weeks. The samples were analyzed at NILU with a Medusa preconcentration method combined with GC-MS SIM. As a main conclusion, time integrated sampling together with Medusa GC-MS methodology is a very precise alternative to the traditional attempts to quantify PFC-emission.

NILU

Prøvetaking av PM10 i omgivelsene til Brevik bru. 22. sept – 5. okt 2021.

Hak, Claudia; Uggerud, Hilde Thelle; Andresen, Erik; Teigland, Even Kristian; Mortensen, Tore

NILU – Norsk institutt for luftforskning har, på oppdrag fra Statens vegvesen – Drift og vedlikehold sør, utført prøvetaking av PM10 i luft i omgivelsene til Brevik bru mellom Brevik og Stathelle. Målingene ble utført med filterprøvetakere ved 2 steder nedvinds for brua i forhold til lokale hovedvindretninger. Prøvene ble tatt hver dag i perioden 22. september – 5. oktober 2021 for å utrede i hvilken grad prosjekt Brevik bru påfører lokalt miljø støvforurensning som kan medføre helseplager. 18 av de 28 prøvene tatt ble analysert med hensyn på metaller. Det ble ikke funnet sammenheng mellom konsentrasjonsforskjell mellom de to målestedene og vindretning mot et av stedene for de målte komponent

NILU