J1-1716 - STRAP - Sources, TRAnsport and fate of persistent air Pollutants in the environment of Slovenia

STRAP - Sources, TRAnsport and fate of persistent air Pollutants in the environment of Slovenia, 1. 7. 2019 - 30. 6. 2023, Nives Ogrinc

Poor air quality is one of the most pressing problems in urban areas negatively impacting human health and the quality of the environment. Reducing air pollution requires effective planning strategies and ways to assess the effectiveness of these strategies in terms of the overall impact on air quality. STRAP (Sources, TRAnsport and fate of persistent air Pollutants in the environment of Slovenia) strives to improve our scientific understanding of air pollution by investigating the source, transport, dispersion and fate of persistent air pollutants: black carbon (BC), particulate matter (PM), polycyclic aromatic hydrocarbons (PAH) and mercury (Hg) in Slovenia.


To date the life cycle of these compounds remain poorly understood and in the case of BC not covered by EU legislation. STRAP will build on existing knowledge and use state-of-the-art techniques based on stable isotope measurements using highly precise multi-collector inductively coupled plasma mass spectrometry (MC-ICPMS) and compound-specific stable isotope analysis (CSIA) to improve source apportionment.


Characterization of sources using BC with highly time resolved measurements and a stable isotope approach will differentiate between fossil and biomass carbon and provide information on whether the contributions are recent and local or aged and regional. In addition, STRAP will construct weather and atmospheric pollutant dispersion models (modelling system) to study and predict the pathway of a pollutant from source to affected population. STRAP will also develop an innovative integrated methodology combining measurement and modelling data to understand better pollutant dispersion in the atmosphere. This approach represents a step forward and a novel contribution to guidelines for assessing air pollution that are currently either based on actual measurements or modelling.


STRAP will perform graphical statistical analysis based on the sunflower algorithm (Sunflower quotation) of measured and modelled pollutant concentrations at an hourly resolution to act as a public warning system. It will also estimate the status of specific environments (urban, marine, industrial) important for planning and managing pollution abatement strategies in relation to environmental change and human health.


Furthermore, STRAP will create an environment favorable to transnational cooperation with experienced partners from Italy (OGS, JRC) and Australia (ANSTO) and synergy with on-going EU projects including SIRS, MercOx, ICARUS, HBM4EU and PrepAir. The project will educate and train young researchers thereby enhancing the career opportunities of a new generation of environmental air quality researchers.















J1 1716 STRAP graphical abstract white



J1 1716 STRAP structure of the project2



Project team

Jožef Stefan Institute

Nives Ogrinc

Milena Horvat

Janja Vaupotič

David Kocman

Juš Kocijan

Bor Krajnc

Igor Živković

Doris Potočnik

Jasmina Masten


National Institute of Biology

Marine Biological Station

Jadran Faganeli

Nives Kovač

Oliver Bajt


University of Ljubljana, Faculty of Computer Science and Informatics

Jana Faganeli


MEIS d.o.o

Marija Zlata Božnar       

Primož Mlakar

Boštjan Grašič

AEROSOL d.o.o.

Matjaž Kobal

Martin Rigel


Financial sources and related projects:

arrs sirs


Published research


We published an article entitled “Analysis of ventilation efficiency as simultaneous control of radon and carbon dioxide levels in indoor air applying transient modelling” in the International Journal of Environmental Research and Public Health in February 2022.

Delo article on possible reductions on CO2 emissions


Carbon dioxide accounts for more than 80% of greenhouse gases. Last year it's concentration exceeded the average of the last decade, which is very worrying. In this article prof dr Nives Ogrinc talks about accessible technologies for capturing CO2.

Defence of the Doctoral Dissertation by Dafina Kikaj


Defence of the Doctoral Dissertation entitled: Assessing atmospheric stability in the Ljubljana Basin and Vipava Valley regions using Radon-222, took place remotely on 8th October 2020

Kick-off Meeting for the STELLAR project


EMPIR project STELLAR started with a kick-off-meeting on 17. September 2020 in the form of web conference.