|
(16-01) Storm water sampling of oil products using Semipermeable membrane devices (SPMD). Bergqvist, Per-Anders*,1, Ulciniene, Lina1,2, Zaliauskiene, Audrone2, 1 Environmental Chemistry, Umeå, Sweden2 Environmental Engineering, Kaunas, Lithuania, Lithuania ABSTRACT- Storm water is of growing concern in urban areas. The significance of oil pollution in storm water is yet to be defined in many areas. The seasonal changes as well as climate (weather) conditions influence the magnitude of pollution in storm water. Semipermeable membrane devices (SPMD) are designed to continuous sample the dissolved fraction of lipophilic organic compounds during one to three weeks. The SPMD sampling rates for different pollutants are calibrated at different temperatures. After sampling the time-weighted average concentration can be calculated for the in water dissolved compounds. The main advantage for this is that the focus is on the primarily bioavaible fraction of the compounds. Depending on chemical a certain part of the total amount is bound to particles and thus not sampled and analysed. In this study the 16 EPA PAH compounds was studied. In addition oil components were analysed with HRGC/LRMS in full scan mode. The quantification were performed using a mixture of used motor oil:gasoline:diesel (1:1:1). The water temperature was 3 degrees C, but still some of the easy evaporating compounds were not found in the storm water. The PAH compound concentrations increased in the storm water downstream industrial and parking area. The correlation between oil components and the 16 PAHs will be studied. Key words: SPMD, Oil, Monitoring, storm water |
