In this report the results of the first part of the project are described. Traffic emissions contribute to a large extent to the health effects of air pollution.
Accurate measurements are highly desirable but relatively scarce due to technical difficulties.
The need for technical refinements of the current sampling and analysis techniques of particulate matter is motivated. The improved techniques were implemented in a number of field campaigns yielding data on the influence of traffic emissions on PM concentration levels. The development of the humidity and temperature-controlled installation in combination with a designed weighing protocol improved the accuracy of weighing of collected aerosol samples. Tests on the SJAC have been performed in order to study its operation when measuring the heavy metals and organic compounds. The limit of detection of the SJAC can be reduced by insulation and applying higher flow rates.