TY - GEN A1 - Wang, Haijing A1 - Fischer, Thomas A1 - Wieprecht, Wolfgang A1 - Möller, Detlev T1 - A predictive method for crude oil volatile organic compounds emission from soil: Evaporation and diffusion behavior investigation of binary gas mixtures T2 - Environmental Science and Pollution Research N2 - Due to their mobility and toxicity, crude oil volatile organic compounds (VOCs) are representative components for oil pipeline contaminated sites detection. Therefore, contaminated location risk assessment, with airborne light detection and ranging (LIDAR) survey, in particular, requires ground-based determinative methods for oil VOCs, the interaction between oil VOCs and soil, and information on how they diffuse from underground into atmosphere. First, we developed a method for determination of crude oil VOC binary mixtures (take n-pentane and n-hexane as examples), taking synergistic effects of VOC mixtures on polydimethylsiloxane (PDMS) solid-phase microextraction (SPME) fibers into consideration. Using this method, we further aim to extract VOCs from small volumes, for example, from soil pores, using a custom-made sampling device for nondestructive SPME fiber intrusion, and to study VOC transport through heterogeneous porous media. Second, specific surface Brunauer–Emmett–Teller (BET) analysis was conducted and used for estimation of VOC isotherm parameters in soil. Finally, two models were fitted for VOC emission prediction, and the results were compared to the experimental emission results. It was found that free diffusion mode worked well, and an empirical correction factor seems to be needed for the other model to adapt to our condition for single and binary systems. Y1 - 2015 UR - https://opus4.kobv.de/opus4-UBICO/frontdoor/index/index/docId/14124 SN - 0944-1344 SN - 1614-7499 ER -