Characteristics of SO2, NO2, Soot and Benzo(a)Pyrene Concentration Variation on the Eastern Coast of the Baltic Sea.

The investigation of SO₂, NO₂, soot and benzo(a)pyrene (BP) has been performed at the background station on the eastern coast of the Baltic Sea since 1980. A significant decreasing trend has been observed for SO₂ and NO₂, while soot and BP concentrations were changing insignificantly. The decreasing SO₂ and NO₂ high concentrations (>10µg·m^-3) have been determined in the air masses coming from the Western and Central Europe to Lithuania since 1900. The concentration of SO₂ in a range of 0–5µg·m^-3 and the concentration of NO₂ in a range of 0–10µg·m^-3 are characteric of the background atmospheric air. [ABSTRACT FROM AUTHOR]