{"id":90222,"date":"2026-11-02T12:17:53","date_gmt":"2026-11-02T11:17:53","guid":{"rendered":"https:\/\/nilu.gnist.dev\/prosjekter\/alcoa-mosjoen-omgivelsesmalinger-av-fluor-so2-tungmetaller-pah-og-stovnedfall-mosjoen-aq\/"},"modified":"2026-11-02T12:17:54","modified_gmt":"2026-11-02T11:17:54","slug":"alcoa-mosjoen-omgivelsesmalinger-av-fluor-so2-tungmetaller-pah-og-stovnedfall-mosjoen-aq","status":"publish","type":"nva_project","link":"https:\/\/nilu.gnist.dev\/en\/projects\/alcoa-mosjoen-omgivelsesmalinger-av-fluor-so2-tungmetaller-pah-og-stovnedfall-mosjoen-aq\/","title":{"rendered":"Alcoa Mosj\u00f8en, Omgivelsesm\u00e5linger av fluor, SO2, tungmetaller, PAH og st\u00f8vnedfall (Mosj\u00f8en AQ)"},"content":{"rendered":"<p>NILU, on behalf of Alcoa Norway AS, Mosj\u00f8en division, has conducted measurements of fluoride, SO2, heavy metals, PAH, and dust deposition in the ambient air around the aluminium smelter in Mosj\u00f8en. The measurements were carried out from May 22 to August 19, 2024, and the results show that all measured components were well below the individual limit values, target values, and air quality criteria during the measurement period. Mosj\u00f8en is most affected by emissions from the smelter during the summer months due to the prevailing wind direction from the fjord, over the smelter, and towards the town. Therefore, the measurement results provide an upper estimate of the smelter&#39;s contribution to the concentrations in Mosj\u00f8en throughout the year. The SO2 concentration in Mosj\u00f8en, measured at Helgeland Kraft (south of Mosj\u00f8en centre) and at six locations in Mosj\u00f8en, was well below the annual mean limit value (20 \u00b5g\/m3) during the measurement period. Previous measurements from 2009 also showed that SO2 concentrations were well below the limit values for hourly, daily, and annual means. The fluoride concentration, measured at Helgeland Kraft, was significantly lower than at Finnskoggata in 2004. The particulate matter concentration (PM10) was also well below the annual mean limit value (20 \u00b5g\/m3) during the measurement period. The metal concentrations in Mosj\u00f8en, measured in PM10 at Helgeland Kraft, were well below the limit and target values as well as the air quality criteria for annual means. PAH concentrations were far below the target value for annual means of BaP, and the levels were lower than in 2008\/09. Dust deposition was measured at three locations in Mosj\u00f8en, and the monthly mean values for the amount of water-insoluble dust were well below the limit value. Overall, the measurements show that the air quality in Mosj\u00f8en is well within the established limit values, and the contribution from the smelter to local air pollution is limited.<\/p>\n","protected":false},"featured_media":0,"template":"","class_list":["post-90222","nva_project","type-nva_project","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/nilu.gnist.dev\/en\/wp-json\/wp\/v2\/nva_project\/90222","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nilu.gnist.dev\/en\/wp-json\/wp\/v2\/nva_project"}],"about":[{"href":"https:\/\/nilu.gnist.dev\/en\/wp-json\/wp\/v2\/types\/nva_project"}],"wp:attachment":[{"href":"https:\/\/nilu.gnist.dev\/en\/wp-json\/wp\/v2\/media?parent=90222"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}