Influence of dissolved organic matter on the bioavailability of hydrophobic organic pollutants in sediments investigated by bioassays

Wruss, Klaus; Todorovic, Dragana; Loibner, Andrea P.
January 2007
BMC Pharmacology;2007 Supplement 2, Vol. 7, Special section p1
Academic Journal
Only little attention has been paid to hetero polycyclic aromatic hydrocarbons (N-, S- or O-substituted PAHs), a group of substances which is found together with PAHs. Hetero PAHs typically show a higher water solubility and a higher bioavailability than the structurally corresponding PAHs. The focus was to study the toxicity of fluorene and the similar hetero PAHs as carbazole, dibenzothiophene and dibenzofuran. Bioassays were carried out with Heterocypris incongruens (Ostracod Toxkit F) and Vibrio fischeri (Lumistox). H. incongruens show the highest sensitivity to carbazole, V. fischeri are most sensitive to dibenzofuran from the studied substances. In the presence of natural sediment toxicity was dramatically reduced. This effect can be deduced to the presence of organic matter (e.g. humic acids) in solid and dissolved form. A aqueous mix of all tested PAHs showed different toxicity results compared to the tested single substances. An explanation for this result is presented. No additive toxicity effects could be observed.


Related Articles

  • Effects of Dissolved Organic Material on Binding and Toxicokinetics of Pyrene in the Waterflea Daphnia magna. Nikkilä, A.; Kukkonen, J. V. K. // Archives of Environmental Contamination & Toxicology;Apr2001, Vol. 40 Issue 3, p333 

    The binding and bioavailability of pyrene was studied in the laboratory in two humic fresh waters and in a reference water without dissolved organic material (DOM), measured as dissolved organic carbon (DOC). The uptake of pyrene by Daphnia magna in short-term (24 h) accumulation experiments was...

  • Bioremediation of Polycyclic Aromatic Hydrocarbon- Contaminated Soils: Effectiveness and Side Effects. Allieri, Myriam Adela Amezcua // Journal of Life Sciences;Apr2012, Vol. 6 Issue 4, p447 

    Bioremediation uses microorganisms to degrade organic contaminants in soil. In this work, the results obtained after using an autochthonous fungus to clean a contaminated soil are reported. In order to remove phenanthrene, a model polycyclic aromatic hydrocarbon, two different bioremediation...

  • Diffuse PAH contamination of surface soils: environmental occurrence, bioavailability, and microbial degradation. Johnsen, Anders R.; Karlson, Ulrich // Applied Microbiology & Biotechnology;Sep2007, Vol. 76 Issue 3, p533 

    The purpose of this review is to recognize the scientific and environmental importance of diffuse pollution with polycyclic aromatic hydrocarbons (PAHs). Diffuse PAH pollution of surface soil is characterized by large area extents, low PAH concentrations, and the lack of point sources. Urban and...

  • Assessment of organic pollutants in coastal sediments, UAE. Abdel Gawad, Esam A.; Al Azab, Mohamed; Lotfy, M. M. // Environmental Geology;Jan2008, Vol. 54 Issue 5, p1091 

    Twenty-five stations were selected along the UAE coastal region to delineate the distribution and to determine the source of total petroleum hydrocarbon (TPH), total organic carbon (TOC), total Kjeldhal nitrogen (TKN), polycyclic aromatic hydrocarbons (PAHs) and polychlorinated biphenyls (PCBs)....

  • Benzene limits are often exceeded, study finds.  // ENDS (Environmental Data Services);Jul2009, Issue 414, p20 

    This article focuses on a British study which examined exposure to volatile organic compounds (VOCs) and polycyclic aromatic hydrocarbons (PAHs). A number of British non-smoking adults served as subjects in this study from 2005-2007. Results of the study showed that exposure to VOCs had dropped....

  • Biocalcification Mediated Reduction of PAHs Bioavailability in Artificially Contaminated Soil. Mahanty, Biswanath; Kim, Subin; Kim, Chang // Water, Air & Soil Pollution;Mar2013, Vol. 224 Issue 3, p1 

    Apart from natural CO sequestration, biocalcification process can reduce bioavailability of certain pollutants. In the present study, experiments were conducted to evaluate the change in bioavailability for three polycyclic aromatic hydrocarbons (PAHs) - anthracene (Ant), phenanthrene (Phe) and...

  • Improvement of the process of fluorene degradation by Rhodococcus rhodochrous strain 172. Rubashko, G. E.; Kolomytseva, M. P.; Golovleva, L. A. // Applied Biochemistry & Microbiology;Jul2006, Vol. 42 Issue 4, p396 

    The ability of Rhodococcus rhodochrous strain 172 to consume fluorene as the sole source of carbon and energy in a liquid medium was successfully increased by an addition of polycapramide fiber to the medium and preliminary adaptation of cells on fluorene agar. A combination of these approaches...

  • Stability Studies of Selected Polycyclic Aromatic Hydrocarbons in Different Organic Solvents and Identification of Their Transformation Products. Dąbrowska, D.; Kot-Wasik, A.; Namieśnik, J. // Polish Journal of Environmental Studies;2008, Vol. 17 Issue 1, p17 

    One of the problems in an HPLC laboratory is the preservation of samples and extracts prior to analysis without any changes. It has been found that degradation processes cannot be eliminated entirely, but they can be slowed down considerably. Photodegradation kinetics of fluorene, anthracene and...

  • Conversion of polycyclic aromatic hydrocarbons by Sphingomonas sp. VKM B-2434. Baboshin, Mikhail; Akimov, Vladimir; Baskunov, Boris; Born, Timothy L.; Khan, Shahamat U.; Golovleva, Ludmila // Biodegradation;Aug2008, Vol. 19 Issue 4, p567 

    A versatile bacterial strain able to convert polycyclic aromatic hydrocarbons (PAHs) was isolated, and a conversion by the isolate of both individual substances and PAH mixtures was investigated. The strain belonged to the Sphingomonas genus as determined on the basis of 16S rRNA analysis and...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics