EN
The main sources of pollution, related pollutants, their emission rates and ways of liberating indoor air are presented. Health symptoms in air spaces with different ventilation systems and risks associated with particular sources are compared. Also, different sampling and analytical techniques and source characterization methods are described. The advantages and shortcomings of the five basic approaches to indoor air monitoring are discussed. Special stress is put on passive samplers whose types theories and areas of application and newest designs are given.