Study of Long Range Transported Pollutants in Arctic Soil
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- Institutt for kjemi 
In this master thesis, levels of Polychlorinated Biphenyls (PCBs), total organic carbon(TOC) and potentially long range transported inorganic elements (Cd, Hg and Pb) insurface soil and vegetation have been studied for samples from Svalbard (NorwegianArctic). 74 soil and 35 vegetation samples were taken at six different sampling siteswhich provide background levels.For measurement of PCBs in soil, a method had been developed for the use of acceleratedsolvent extraction and gas chromatography coupled with tandem mass spectrometry.Different cleanup methods have been tested.Results maintained from a certified laboratory showed abundance of PCB 52 in soil andvegetation samples with a mean of 3,0 ng/g in soil and 5,9 ng/g in vegetation.PCB 180 was found for sample sites in Leinstranda (Ny Ålesund). PCB 28 was found intwo vegetation samples. Other measured congeners (101, 118, 138, 153) were under thelimit of quantification (LOQ= 1 ng/g).A mean concentration of Hg of 155 § 83 ng/g in soil and 97,4 ng/g in vegetationwas obtained, with significant higher results for sample sites close to Longyearbyen. Hgsignificantly correlates with S and Cl in soil. Measured Pb levels in soil show a mean of31,5 µg/g and seem to result from the soil parent material. Cd levels (mean 0,489µg/g in soil) were high correlated with TOC. Higher levels and variation wasfound for Cd in vegetation samples (0,595 µg/g).