This dataset contains data of mercury (Hg), bromine (Br), iodine (I), Manganese (Mn), sodium (Na) and mathasulphonic acid (MSA) from Svalbard (78° N, 11° E) surface snow (first 3 cm) analysez through ionic chromatography (IC) technique. The two campaigns have been respectively conducted from october 2018 to may 2019 and from october 2019 to may 2020. All the results are shown in ppb.