Types and sources of air pollution, emission, transmission, immission. Methods of data acquisition and processing for immission measurements. Sampled and continuous measurements. Evaluation of the results, thresholds. Selected measurement methods and components for gaseous and particle-type pollution, particularly for CO, NO, CO2, SO2, sulphur combinations, hydro carbon combinations with and without methane, particles, structure and operation of automatic measurement networks for the surveillance of air pollution.