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NILU's Strategic Institute Initiatives (SIS) 2014. NILU OR
Each of NILU's Strategic Institute Initiatives(SIS) is required to deliver a popular science report annually to the Research Council. This report contains all of NILU¿s annual SIS-reports for 2014.
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NILU's Environmental Management Report 2014. NILU OR
One of NILU's main goals is to study the impact of pollution and supply decision-makers with a sound scientific platform for choosing measures to reduce the negative impacts. It is also very important for the institute to have control of the impact the institute¿s own activities may have on the environment and to reduce negative impacts as far as possible.
NILU has for many years been working to improve the status of the environment and to reduce negative impacts. In order to take this one step further, it was decided that the institute should restructure the work according to a relevant environmental standard and to seek certification according to the same standard.
The chosen standard is ISO 14001:2004 (Environmental management systems - Requirements with guidance for use) and NILU achieved certification according to this standard in October 2010. This report summarizes the results of the system.
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NILU has on behalf of the Norwegian Environment Agency determined the concentration of ionic perfluorinated substances (PFASs), including PFOA, in outdoor gear.
Of the investigated 18 items, no PFAS could be detected at all in nine of them. Two samples contained PFOA exceeding the limit of 1 µg/m2. The quality assurance where three replicates of one sample were extracted had a relative standard deviation (RSD) less than 10% for all detected substances except one (PFTrDA). Other quality measures such as recovery calculations and blanks shows that the method used for extraction is suitable for these types of matrices and substances. PFOS was not present in the items investigated, indicating that the textile industry manages to effectively avoid PFOS in their production processes.
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Parallelle målinger for BTEX på to steder i Oslo bekreftet at rapporterte konsentrasjoner fra henholdsvis NILU og Molab varierte med flere hundre prosent. En nærmere gjennomgang av beregningsmetoden viste at Molab brukte feil opptaksfaktorer i sine beregninger. Molab overestimerte dermed benzen-konsentrasjoner med 288 %, toluen med 247%, etylbenzen med 265% og xylener med 264%. Denne feilen har blitt gjort ved alle målinger i Oslo i perioden fra 2008 til 2013 og ved parallellmålingene i 2013 og 2014. Etter å ha utført de nødvendige korreksjoner viser måleserien for benzen ved Oslos målesteder en kontinuerlig synkende trend siden 2001. En trend på lik linje med mange andre europeiske byer. Nåværende årsmiddel er nå nærmere 1 µg/m3 og dermed langt under grenseverdien på 5 µg/m3.
Vedrørende prosjektets utgangspunkt som var å se på om det var mulig å etablere en korreksjonsfaktor mellom NILU og Molabs metoder, så er dette ikke lenger aktuelt. Etter korreksjonen av Molabs data er forskjellen mellom NILU og Molabs resultater liten og mindre enn usikkerheten i metodene.
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