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Concentrations of PAHs in the moss Pleurozium schreberi (Brid.) Mitt. were compared in three regions differing in degree of industrialization and urbanization: the Silesia-Cracow region (heavily polluted), Mazovia (moderately polluted) and Podlasie (northeast Poland, control area). Ten moss samples of moss were taken from each area. PAH concentrations were determined by HPLC. Total PAHs levels in P. schreberi varied depending on the region: mean 7350 (± 4075) ng kg−1 d. wt. for the Silesia-Cracow region, mean 2127 (± 1686) ng kg−1 d. wt. for Mazovia, and mean 838 (± 943) ng kg−1 d. wt. for the control area. PAHs concentrations differed significantly between the three regions. The number of individual PAH compounds detected depended on the region. The following PAHs tended to occur in pairs: phenanthrene and benzo(k)fluoranthene, pyrene and chrysene, pyrene and dibenz(ah)anthracene, benz(a)anthracene and benzo(b)fluoranthene, benz(a)anthracene and benzo(ghi)perylene, chrysene and dibenz(ah)anthracene, benzo(b)fluoranthene and benzo(ghi)perylene, and benzo(b)fluoranthene and indeno(123cd)pyrene. The results of PAHs analysis in Pleurozium schreberi indicate the usefulness of mosses for monitoring these compounds in the environment

PAHs Concentrations in Poland Using Moss Pleurozium Schreberi as Bioindicator