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4-2_2. distribution of pa hs in the environment, marija okuka
 

4-2_2. distribution of pa hs in the environment, marija okuka

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    4-2_2. distribution of pa hs in the environment, marija okuka 4-2_2. distribution of pa hs in the environment, marija okuka Presentation Transcript

    • Distribution of PAHs in the environmentDepartment of Environmental Engineering and Occupational Safety Faculty of Technical Sciences University of Novi Sad M. S. Okuka, N. V. Šenk May 2012. Sofia
    • PAHs-Polycyclic Aromatic Hydrocarbons• Organic pollutants• Origin• Toxicity
    • PAHs-Polycyclic Aromatic Hydrocarbons• Sorption processes• Dry and wet deposition• Air/ Soil /Water
    • Structure
    • SPARC (Sparc Performs Automated Reasoning in Chemistry)Using the molecular structure model gas/particle partitioningcoefficient (Kp) is calculated using the formula: Kp f wiom K wiom K wiom - sorption coefficient calculated with SPARC softvare (ciWIOM/ciair) f wiom - mass fraction of water insoluble organic matter (wiom) in aerosol (recomended value 40%)
    • SPARC (Sparc Performs Automated Reasoning in Chemistry)The model was validated for three types of WIOM polymers Secondary organic aerosol polymers used in calculations as organic matter surrogate
    • Locations in Novi SadN1-NIS refinery,N2-Sangaj kindergarden,N3-Citys Assembly
    • Comparison of log Kp values-measured and modelled 6 5.5 B(a)P B(b)F B(k)F B(b)F 5 B(k)F B(ghi)P B(b)F B(a)P B(k)F N1 N2 4.5 N3 Line 1:1 4 B(a)A B(a)A Chr B(a)A 3.5 Chr 3 3 3.5 4 4.5 5 5.5 6
    • ConclusionPredictions for PAHs with carcinogenic, mutagenic andteratogenic properties are close to linear relationship, whichmeans that SPARC model can be used for prediction ofpartitioning and distribution processes.
    • The study of partition processesheterogenic system • air/water • air/soil • water/soilare in progress.
    • THANK YOU FOR YOUR ATTENTION!!! БЛАГОДАРЯ ВИ ЗА ВНИМАНИЕТО!!!