PM10 samples were collected from an urban/industrial site nearby Athens,where uncon-trolled burning activities occur.PAHs,monocarboxylic,dicarboxylic,hydroxycarboxylic and aromatic acids,tracers from BVOC oxidation,biomass burning tracers and bisphenol A were determined.PAH,monocarboxylic acids,biomass burning tracers and bisphenol A were in-creased during autumn/winter,while BSOA tracers,dicarboxylic-and hydroxycarboxylic acids during summer.Regarding aromatic acids,different sources and formation mecha-nisms were indicated as benzoic,phthalic and trimellitic acids were peaked during summer whereas p-toluic,isophthalic and terephthalic were more abundant during autumn/winter.The Benzo[a]pyrene-equivalent carcinogenic power,carcinogenic and mutagenic activities were calculated showing significant(p ＜ 0.05)increases during the colder months.Palmitic,succinic and malic acids were the most abundant monocarboxylic,dicarboxylic and hydro-carboxylic acids during the entire sampling period.Isoprene oxidation was the most sig-nificant contributor to BSOA as the isoprene-SOA compounds were two times more abun-dant than the pinene-SOA(13.4 ± 12.3 and 6.1 ± 2.9 ng/m3,respectively).Ozone has signifi-cant impact on the formation of many studied compounds showing significant correlations with:isoprene-SOA(r = 0.77),hydrocarboxylic acids(r = 0.69),pinene-SOA(r = 0.63),dicar-boxylic acids(r = 0.58),and the sum of phthalic,benzoic and trimellitic acids(r = 0.44).PCA demonstrated five factors that could explain sources including plastic enriched waste burn-ing(30.8％),oxidation of unsaturated fatty acids(23.0％),vehicle missions and cooking(9.2％),biomass burning(7.7％)and oxidation of VOCs(5.8％).The results highlight the significant contribution of plastic waste uncontrolled burning to the overall air quality degradation.