Conclusions
The application of SBSE devices allows a rapid and low-cost assessment of airborne PAHs levels in indoor environments and may help to decide if more sophisticated standardized sampling procedure are worth being applied. The charm of this approach lies the easy applicability and the option to investigate a given architecture in space and time and thus not only estimate airborne levels but provide valuable information on the dynamics of analyte interaction between sources and sinks and the influence of temperature and aeration. Since PAH congener pattern observed after stir bar sorptive extraction from indoor air resembled largely that observed after pump sampling it should serve as orientating procedure to assess necessity for pump sampling. Future developments may use different SBSE device sizes, different adsorber phases and modified placement of SBSE devices such that adsorption of dust particles can optionally be allowed or excluded in a controlled manner. Thus, SBSE may be developed towards a procedure suppoorting a comprehensive risk assessment regarding PAH levels in indoor environments.