Keywords: 6:2 fluorotelomer sulfonate; 6:2 fluorotelomer sulfonate, standard deviation; Biological sample; BIOS; Domashny; Event label; Franz Josef Land; Gas chromatography - Mass spectrometry (GC-MS); Hexabromocyclododecane; Hexabromocyclododecane, standard deviation; High Performance Liquid Chromatography (HPLC); Kluyv_Cape; Latitude of event; Longitude of event; Nagurskoe; Perfluorinated alkyl substances; Perfluorinated alkyl substances, standard deviation; Perfluorodecane sulfonate; Perfluorodecane sulfonate, standard deviation; Perfluorodecanoate; Perfluorodecanoate, standard deviation; Perfluorododecanoate; Perfluorododecanoate, standard deviation; Perfluorohexane sulfonate; Perfluorohexane sulfonate, standard deviation; Perfluorononanoate; Perfluorononanoate, standard deviation; Perfluorooctane sulfonamide; Perfluorooctane sulfonamide, standard deviation; Perfluorooctane sulfonate; Perfluorooctane sulfonate, standard deviation; Perfluorooctanoate; Perfluorooctanoate, standard deviation; Perfluoropentadecanoate; Perfluoropentadecanoate, standard deviation; Perfluorotetradecanoate; Perfluorotetradecanoate, standard deviation; Perfluorotridecanoate; Perfluorotridecanoate, standard deviation; Perfluoroundecanoate; Perfluoroundecanoate, standard deviation; Polybrominated diphenyl ethers; Polybrominated diphenyl ethers, congener BDE-100; Polybrominated diphenyl ethers, congener BDE-153; Polybrominated diphenyl ethers, congener BDE-154; Polybrominated diphenyl ethers, congener BDE-209; Polybrominated diphenyl ethers, congener BDE-28; Polybrominated diphenyl ethers, congener BDE-47; Polybrominated diphenyl ethers, congener BDE-99; Polybrominated diphenyl ethers, standard deviation; Sample amount; Sample type; Severnaya Zemlya; Species; Svalbard; Svenskøya