Chemical profile of fugitive particulate emissions

Abstract

Fugitive emissions pose problems both for general air quality management as well as for the operational management of the facilities. In harbours, activities such loading, unloading and transport of dusty materials are important sources of particulate fugitive emissions. Therefore, there is a growing concern about air quality in these areas as a result of the high impact of the operations on human health and environment. The objectives of this study were to estimate the impact of harbour activities on air particulate matter (APM) levels and to compile an inventory of chemical profiles of harbour particulate fugitive emissions. This preliminary work was based on experimental campaigns carried out in a Portuguese harbour when different types of bulk materials were handled. High time resolution monitors were installed close to the unloaded area and recorded APM concentrations and meteorological variables. PM2.5 and PM2.5–10 were collected during unloading operations and a complete chemical characterization of collected samples was made by the techniques k 0-instrumental neutron activation analysis and particle induced X-ray emission. Results showed that manipulation of materials during harbour operations resulted in high emissions of particles, especially from the coarse fraction. These emissions were very affected by the granulometry and chemical composition of the handled materials and by the meteorological conditions.