Oxygenated polycyclic aromatic hydrocarbons; Polycyclic aromatic hydrocarbons; Soils; Degradation of polycyclic aromatic hydrocarbons; Compound-specific isotope analysis; Pressurized liquid extraction; Gel permeation chromatography; Solid phase extraction; Gas chromatography/mass spectrometry; persistent organic pollutants (POPs);
Wei Chong, Han Yongming, Bandowe Benjamin A.M., Cao Junji, Huang Rujin, Ni Haiyan, Tan Jie, Wilcke Wolfgang (2015), Occurrence, gas/particle partitioning and carcinogenic risk of polycyclic aromatic hydrocarbons and their oxygen- and nitrogen-containing derivatives in Xi’an, central China., in The Science of the Total Environment
, 505, 814-822.
Lundstedt Staffan, Bandowe Benjamin, Wilcke Wolfgang, Boll Esther, Christensen J.H., Vila J., Grifoll M., Faure P., Biache C., Lorgeoux C., Larsson M., Frech Irgum K., Ivarsson P., Ricci M. (2014), First intercomparison study on the analysis of oxygenated polycyclic aromatic hydrocarbons (oxy-PAHs) and nitrogen heterocyclic polycyclic aromatic compounds (N-PACs) in contaminated soil, in Trends in Analytical Chemistry
, 57, 83-92.
Bandowe Benjamin A.M., Gomez Lueso Maria, Wilcke Wolfgang (2014), Oxygenated polycyclic aromatic hydrocarbons and azaarenes in urban soils: A comparison of a tropical city (Bangkok) with two temperate cities (Bratislava and Gothenburg)., in Chemosphere
, 107, 407-414.
Bandowe Benjamin A Musa, Meusel Hannah, Huang Rujin, Ho Kinfai, Cao Junji, Hoffmann Thorsten, Wilcke Wolfgang (2014), PM2.5-bound oxygenated PAHs, nitro-PAHs and parent-PAHs from the atmosphere of a Chinese megacity: Seasonal variation, sources and cancer risk assessment, in Science of the Total Environment
, 473-474, 77-87.
Bandowe Benjamin, Bigalke Moritz, Boamah Linda, Nyarko Elvis, Kwesi Saalia Firibu, Wilcke Wolfgang (2014), Polycyclic aromatic compounds (PAHs and oxygenated PAHs) and trace metals in fish species from Ghana (West Africa): Bioaccumulation and health risk assessment., in Environment International
, 65, 135-146.
Wilcke Wolfgang, Benjamin A. Musa Bandowe, Gomez Luso Maria, Ruppenthal Marc, del Valle Hector, Oelmann Yvonne (2014), Polycyclic aromatic hydrocarbons (PAHs) and their polar derivatives (oxygenated PAHs, azaarenes) in soils along a climosequence in Argentina, in The Science of the Total Environment
, 473–474 , 317-325.
Wilcke Wolfgang, Kiesewetter Mario, Musa Bandowe Benjamin A. (2013), Microbial formation and degradation of oxygen-containing polycyclic aromatic hydrocarbons (OPAHs) in soil during short-term incubation, in Environmental Pollution
, 184, 385-390.
The environmental fate of polycyclic aromatic hydrocarbons (PAHs), a group of persistent organic pollutants produced in all kinds of combustion processes but also partly by biological activity, was subject to intensive research efforts in the past. The reason was the high toxicity of PAHs resulting in the inclusion of PAHs in the list of priority pollutants (e.g.,by the U.S. Environmental Protection Agency). The PAHs are persistent and mainly microbially degraded to a limited degree in the environment and particularly in soil which is the major storage compartment of PAHs. The degradation produces oxygenated PAHs (OPAHs), some of which are known to be more toxic than their parent-PAHs. Some OPAHs are also directly produced simultaneously to PAHs in combustion processes. Unfortunately, there is a scarcity of information about the occurrence, sources and fate of OPAHs in the environment. We therefore propose to investigate the occurrence, sources and fate of OPAHs in soil, which we assume is also the major storage compartment of OPAHs. The proposal includes (i) the further improvement of a GC/MS-based analytical method recently developed by ourselves with the help of gel permeation chromatography (GPC) as additional clean-up step which is particularly necessary for the analysis of organic matter-rich soils, (ii) the determination of OPAH concentrations in differently contaminated soils to broaden our very limited data base and to assess transport processes of OPAHs in soil, (iii) the identification of OPAH sources in soils (combustion vs. abiotic chemical or microbial oxidation) with the help of correlation analysis, specific ratios of compound concentrations and simultaneouscompound-specific dD and d13C determinations and (iv) the study of PAH degradation both in field soils by determining the depth distribution of PAHs in organic layers of forest soils and by conducting degradation experiments in the laboratory. To reach these objectives, we will make use of our soil archive with samples from all over the world (e.g., Slovakia, Brazil,Thailand), collect further samples in Switzerland and Slovakia and conduct incubations of PAH-contaminated soil in the laboratory. The proposed research will be conducted in close cooperation with an internationalconsortium led by the University of Umeå, Sweden (Polar PAC Network) of which we are member. This proposal therefore also aims at establishing the basis for a possible future European Union-funded international research project.