Organophosphate esters in airborne particles from subway stations

For the first time, concentrations of 19 organophosphate esters (OPEs) were measured in airborne fine particulate matter (PM2.5) from subway stations Barcelona (Spain) to investigate their occurrence, contamination profiles and associated health risks. OPEs detected all PM2.5 samples with levels ranging between 1.59 202 ng/m 3 (mean value 39.9 ). Seventeen out tested analytes detected, TDClPP, TClPP TCEP being those presenting highest concentrations. OPE are not driven by same factors that determine ambient other constituents subway. Newer presented higher levels, probably due materials used design platforms, greater use modern plastic versus older tiles stones. Estimated daily intakes via particles inhalation during time expended calculated, as well carcinogenic non-carcinogenic risks (CR non-CR), much lower than threshold risk values. Thus, exposure when standing on platform OPE's per se is considered be dangerous for commuters. • stations. TDClPP values, contributing up 49% total levels. Materials platforms seem related Human was calculated. Non-CR CR