Persistent organic pollutants in snow from European high mountain areas

摘要: Snow cores were collected in the catchment area of five remote mountain lakes Europe. They analysed for polycyclic aromatic hydrocarbons (PAH), polychlorinated biphenyls (PCB), and organochlorine pesticides, namely DDTs, hexachlorobenzene (HCB) hexachlorocyclohexanes (HCH). PAH are found higher amounts Tatra Caledonian mountains, PCB Alps HCH highest Pyrenees. The qualitative distributions dominated by low molecular weight compounds, phenanthrene being most abundant all but one site. These compounds also occur predominantly gas phase atmosphere. Their high abundance snowpack witness occurrence effective transfer mechanisms from to snow flakes. In Starolesnianske (Tatra mountains), a contribution is found. This site exhibits suspended particulate levels. Transformation concentration values these into annual deposition rates correction catchment/lake indicates that Scandinavia large proportion incorporation mediated snowfallout whereas mountains only accounts small fraction stored lake sediments. Among have been above method detection limit samples. congener changes significantly between sites, although predominance less chlorinated congeners generally observed.