Distribution of PAHs in the environment

M. S. Okuka, N. V. Šenk

May 2012. Sofia

Department of Environmental Engineering and Occupational Safety Faculty of Technical Sciences

University of Novi Sad

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 partitioning coefficient (Kp) is calculated using the formula:

wiomwiom KfKp

wiomK- sorption coefficient calculated with SPARC softvare (ciWIOM/ciair)

wiomf - 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-City's Assembly

Comparison of log Kp values-measured and modelled

3 3.5 4 4.5 5 5.5 63

3.5

4

4.5

5

5.5

6

B(ghi)P

N1N2N3Line 1:1

Conclusion

Predictions for PAHs with carcinogenic, mutagenic and teratogenic properties are close to linear relationship, which means that SPARC model can be used for prediction of partitioning and distribution processes.

The study of partition processes heterogenic system

• air/water• air/soil • water/soil

are in progress.

THANK YOU FOR YOUR ATTENTION!!!

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