Systematic characterization of morphological, mineralogical, chemical and toxicological properties of various size fractions of the atmospheric particulate matter was a main focus of this study together with an assessment of the human health risks they pose. Even though near-ground atmospheric aerosols have been a subject of intensive research in recent years, data integrating chemical composition of particles and health risks are still scarce and the particle size aspect has not been properly addressed yet. Filling this gap, however, is necessary for reliable risk assessment. A high volume ambient air sampler equipped with a multi-stage cascade impactor was used for size specific particle collection, and all 6 fractions were a subject of detailed characterization of chemical (PAHs) and mineralogical composition of the particles, their mass size distribution and genotoxic potential of organic extracts. Finally, the risk level for inhalation exposure associated to the carcinogenic character of the studied PAHs has been assessed. The finest fraction (<0.45 μm) exhibited the highest mass, highest active surface, highest amount of associated PAHs and also highest direct and indirect genotoxic potentials in our model air sample. Risk assessment of inhalation scenario indicates the significant cancer risk values in PM 1.5 size fraction. This presented new approach proved to be a useful tool for human health risk assessment in the areas with significant levels of air dust concentration.
- MeSH
- aerosoly chemie toxicita MeSH
- chemické modely MeSH
- hodnocení rizik MeSH
- inhalační expozice statistika a číselné údaje MeSH
- látky znečišťující vzduch chemie toxicita MeSH
- lidé MeSH
- monitorování životního prostředí MeSH
- pevné částice chemie toxicita MeSH
- polycyklické aromatické uhlovodíky analýza chemie toxicita MeSH
- testy toxicity MeSH
- velikost částic MeSH
- vzduch analýza MeSH
- znečištění ovzduší statistika a číselné údaje MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
A total number of 471 soil samples collected during the period of 1996-2006 from the agricultural and forest areas of the Czech Republic were analyzed for their content of persistent organic pollutants (POPs). Spatial variability of the POP concentrations was assessed using an IDW spatial GIS model analysis. For every grid of the network, resulting modeled levels of contamination allowed for estimation of the total burden of POPs in soils. Potential risks associated with contaminated soils were assessed as well. Database of the old ecological burdens counting 3061 sampling sites was used to adjust the model and incorporate the risks of heavily contaminated sites. The high levels of health risks were only found at less than 1% of the area of interest. The IDW modeling proved to be a useful tool for screening of the health risks in the large areas with scarce monitoring data. Presented approach can be applied in the risk management, to support an efficient targeting of the risk reduction measures, or to improve a design of the national monitoring.
- MeSH
- časové faktory MeSH
- ekosystém MeSH
- hodnocení rizik MeSH
- látky znečišťující půdu analýza chemie MeSH
- lidé MeSH
- monitorování životního prostředí MeSH
- organické látky analýza MeSH
- stromy MeSH
- veřejné zdravotnictví MeSH
- zemědělství MeSH
- Check Tag
- lidé MeSH
- Publikační typ
- práce podpořená grantem MeSH
- Geografické názvy
- Česká republika MeSH
- MeSH
- environmentální lékařství metody statistika a číselné údaje MeSH
- finanční podpora výzkumu jako téma MeSH
- geografické informační systémy statistika a číselné údaje využití MeSH
- hodnocení rizik metody statistika a číselné údaje využití MeSH
- látky znečišťující životní prostředí škodlivé účinky MeSH
- lidé MeSH
- nádory epidemiologie etiologie prevence a kontrola MeSH
- registrace MeSH
- statistika přirozeného pohybu MeSH
- Check Tag
- lidé MeSH
- Geografické názvy
- Česká republika MeSH
