Found 10491 publications. Showing page 236 of 420:
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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Monitoring of the atmospheric ozone layer and natural ultraviolet radiation. Annual report 2014. NILU OR
This is an annual report describing the activities and main results of the monitoring programme
"Monitoring of the atmospheric ozone layer and natural ultraviolet radiation" for 2014. The ozone
layer was below the long-term mean in spring 2014, but increased in April/May and was close to
normal rest of the year. A clear decrease in total ozone above Norway during the period 1979-
1997 stopped after 1998 and the ozone layer above Norway now seems to have stabilized.
2015
Assessment of spatial and temporal trends of POP pollution on regional and global scale. EMEP Status Report, 3/2015
2015
Dispersion calculations regarding emissions from tunnel outlets in Hammerfest. NILU OR
Dispersion calculations for tunnel mouths in Hammerfest. It's estimated maximum concentrations of PM10 and NOx in the tunnels under unfavorable traffic conditions (congestion afternoon). Concentration reduction as a function of distance from the tunnel entrances are shown in Table, and the concentrations are compared with national goals and air quality limits.
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