The effect of export to the deep sea on the long-range transport potential of persistent organic pollutants

  • Martin Scheringer
  • Maximilian Stroebe
  • Frank Wania
  • Fabio Wegmann
  • Konrad Hungerbühler
Book Presentation



Export to the deep sea has been found to be a relevant pathway for highly hydrophobic chemicals. The objective of this study is to investigate the influence of this process on the potential for long-range transport (LRT) of such chemicals.


The spatial range as a measure of potential for LRT is calculated for seven PCB congeners with the multimedia fate and transport model ChemRange. Spatial ranges for cases with and without deep sea export are compared.

Results and Discussion

Export to the deep sea leads to increased transfer from the air to the surface ocean and, thereby, to lower spatial ranges for PCB congeners whose net deposition rate constant is similar to or greater than the atmospheric degradation rate constant. This is fulfilled for the PCB congeners 101, 153, 180, and 194. The spatial ranges of the congeners 8, 28, and 52, in contrast, are not affected by deep sea export. With export to the deep sea included in the model, the spatial ranges of the heavier congener are similar to those of the lighter ones, while the intermediate congeners 101 and 153 have the highest potential for long-range transport.


Transfer to the deep ocean affects the mass balance and the potential for LRT of highly hydrophobic chemicals and should be included in multimedia fate models containing a compartment for ocean water.


Deep sea export exposure modeling long-range transport multimedia model PCBs persistent organic pollutants (POPs) 


  1. Alldredge AL, Gottschalk CC (1989): Direct Observations of the Mass Flocculation of Diatom Blooms: Characteristics, Settling Velocities and Formation of Diatom Aggregates. Deep-Sea Res 36: 159–171CrossRefGoogle Scholar
  2. Alldredge AL, Silver MW (1988): Characteristics, Dynamics and Significance of Marine Snow. Prog Oceanog 20: 41–82CrossRefGoogle Scholar
  3. Anderson PN, Hites RA (1996): OH Radical Reactions: The Major Removal Pathway for Polychlorinated Biphenyls from the Atmosphere. Environ Sci Technol 30, 1765–1763Google Scholar
  4. Antia AN, Koeve W, Fischer G, Blanz T, Schulz-Bull D, Scholten J, Neuer S, Kremling K, Kuss J, Peinert R, Hebbeln D, Bathmann U, Conte M, Fehner U, Zeitzschel B (2001): Basin-wide particulate carbon flux in the Atlantic Ocean: Regional export patterns and potential for atmospheric CO2 sequestration. Global Biogeochem Cy 15, 845–862CrossRefGoogle Scholar
  5. Baines SB, Pace ML, Karl DM (1994): Why Does the Relationship between Sinking Flux and Planktonic Primary Production Differ between Lakes and Oceans? Limnol Oceanogr 39: 213–226Google Scholar
  6. Behrenfeld MJ, Falkowski PG (1997): Photosynthetic Rates Derived from Satellite-Based Chlorophyll Concentration. Limnol Oceanogr 42, 1–20Google Scholar
  7. Bennett DH, McKone TE, Matthies M, Kastenberg WE (1998): General Formulation of Characteristic Travel Distance for Semivolatile Organic Chemicals in a Multi-Media Environment. Environ Sci Technol 32, 4023–4030CrossRefGoogle Scholar
  8. Beyer A, Mackay D, Matthies M, Wania F, Webster E (2000): Assessing Long-Range Transport Potential of Persistent Organic Pollutants, Environ Sci Technol 34, 699–703CrossRefGoogle Scholar
  9. Beyer A, Wania F, Gouin T, Mackay D, Matthies M(2002): Selecting Internally Consistent Physical-Chemical Properties of Organic Compounds, Environ Toxicol Chem 21, 941–953CrossRefGoogle Scholar
  10. Beyer A, Wania F, Gouin T, Mackay D, Matthies M (2003) Temperature Dependence of the Characteristic Travel Distance. Environ Sci Technol 37, 766–771CrossRefGoogle Scholar
  11. Dachs J, Bayona JM, Albaigés J (1997): Spatial distribution, vertical profiles and budget of organochlorine compounds in Western Mediterranean seawater. Mar Chem 57, 313–324CrossRefGoogle Scholar
  12. Dachs J, Lohmann R, Ockenden WA, Méjanelle L, Eisenreich SJ, Jones KC (2002): Oceanic Biogeochemical Controls on Global Dynamics of Persistent Organic Pollutants. Environ Sci Technol 36, 4229–4237CrossRefGoogle Scholar
  13. Eppley RW, Peterson BJ (1979): Particulate Organic Matter Flux and Planktonic New Production in the Deep Ocean. Nature 282, 677–680CrossRefGoogle Scholar
  14. Falkowski PG, Barber RT, Smetacek V (1998): Biogeochemical Controls and Feedbacks on Ocean Primary Production. Science 281, 200–206CrossRefGoogle Scholar
  15. Finizio A, Mackay D, Bidleman TF, Harner T (1997): Octanol-Air Partition Coefficient as a Predictor of Partitioning of Semivolatile Organic Chemicals to Aerosols. Atmos Environ 31, 2289–2296CrossRefGoogle Scholar
  16. Fowler SW, Knauer GA (1986): Role of Large Particles in the Transport of Elements and Organic Compounds Through the Oceanic Water Column. Prog Oceanog 16, 147–194CrossRefGoogle Scholar
  17. Froescheis O, Looser R, Cailliet GM, Jarman WM, Ballschmiter K (2000): The Deep-Sea as a Final Global Sink of Semivolatile Persistent Organic Pollutants? Part I: PCBs in Surface and Deep-Sea Dwelling Fish of the North and South Atlantic and the Monterey Bay Canyon (California). Chemosphere 40, 651–660CrossRefGoogle Scholar
  18. Gustafsson Ö, Gschwend PM, Buesseler KO (1997): Settling Removal Rates of PCBs into the Northwestern Atlantic Derived from 238U-234Th Disequilibria. Environ Sci Technol 31, 3544–3550CrossRefGoogle Scholar
  19. Held H. (2001): Semianalytical Spatial Ranges and Persistences of Non-Polar Chemicals for Reaction-Diffusion Type Dynamics. In: Integrated Systems Approaches to Natural and Social Dynamics (Eds. M. Matthies, H. Malchow, J. Kriz), Springer, HeidelbergGoogle Scholar
  20. Karickhoff SW (1981): Semi-Empirical Estimation of Sorption of Hydrophobic Pollutants on Natural Sediments and Soils. Chemosphere 10, 833–846CrossRefGoogle Scholar
  21. Krämer W, Buchen H, Reuter U, Biscoito M, Maul DC, Le Grand G, Ballschmiter K (1984): Global Baseline Pollution Studies IX: C6-C14 Organochlorine Compounds in Surface-Water and Deep-Sea Fish from the Eastern North Atlantic. Chemosphere 13, 1255–1267CrossRefGoogle Scholar
  22. Li N, Wania F, Lei YD, Daly G (2003): A Comprehensive and Critical Compilation, Evaluation and Selection of Physical Chemical Property Data for Selected Polychlorinated Biphenyls. J Phys Chem Ref Data, in pressGoogle Scholar
  23. Meijer SN, Steinnes E, Ockenden WA, Jones KC (2002): Influence of Environmental Variables on the Spatial Distribution of PCBs in Norwegian and U.K. Soils: Implications for Global Cycling. Environ Sci Technol 36, 2146–2153CrossRefGoogle Scholar
  24. Murray JW (1992): The Oceans. In: Butcher SS, Charlson RJ, Orians GH, Wolfe GV (Eds.): Global Biogeochemical Cycles. Academic Press, London, 175–211Google Scholar
  25. Ockenden WA, Sweetman AJ, Prest HF, Steinnes E, Jones KC(1998): Toward an Understanding of the Global Atmospheric Distribution of Persistent Organic Pollutants: The Use of Semipermeable Membrane Devices as Time-Integrated Passive Samplers. Environ Sci Technol 32, 2795–2803CrossRefGoogle Scholar
  26. Pilskaln CH, Paduan JB, Chavez FP, Anderson RY, Berelson WM (1996): Carbon Export and Regeneration in the Coastal Upwelling System of Monterey Bay, Central California. J Marine Res 54, 1149–1178CrossRefGoogle Scholar
  27. Pilskaln CH, Lehmann C, Paduan JB, Silver MW (1998): Spatial and Temporal Dynamics in Marine Aggregate Abundance, Sinking Rate and Flux: Monterey Bay, Central California. Deep-Sea Res II 45, 1803–1837CrossRefGoogle Scholar
  28. Scheringer M (1996): Persistence and Spatial Range as Endpoints of an Exposure-Based Assessment of Organic Chemicals. Environ Sci Technol 30, 1652–1659CrossRefGoogle Scholar
  29. Scheringer M (2002): Persistence and Spatial Range of Environmental Chemicals. Wiley-VCH, WeinheimGoogle Scholar
  30. Scheringer M, Matthies M, Hungerbühler K (2001): The Spatial Scale of Organic Chemicals in Multimedia Fate Modeling - Recent Developments and Significance for Chemicals Assessment. Environ Sci Pollut Res 8, 150–155CrossRefGoogle Scholar
  31. Scheringer M, Stroebe M, Held H (2002): Chemrange 2.1 - A Multimedia Transport Model for Calculating Persistence and Spatial Range of Organic Chemicals. ETH Zürich, Zürich http:// Scholar
  32. Skoglund RS, Swackhamer DL (1999): Evidence for the Use of Organic Carbon as the Sorbing Matrix in the Modeling of PCB Accumulation in Phytoplankton. Environ Sci Technol 33:1516–1519CrossRefGoogle Scholar
  33. Stroebe M, Scheringer M, Held H, Hungerbühler K (2003): Inter-Comparison of Multimedia Modeling Approaches: Modes of Transport, Measures of Long Range Transport Potential and the Spatial Remote State. Sci Total Environ, in pressGoogle Scholar
  34. Wania F, Daly G (2002): Estimating the Contribution of Degradation in Air and Deposition to the Deep Sea to the Global Loss of PCBs. Atmos Environ 36, 5581–5593CrossRefGoogle Scholar
  35. Wania F, Dugani C (2003): Assessing the Long-Range Transport Potential of Polybrominated Diphenyl Ethers: A Comparison of Four Multimedia Models, Environ. Toxicol. Chem. 22, 1252–1261CrossRefGoogle Scholar

Copyright information

© Ecomed Publishers 2004

Authors and Affiliations

  • Martin Scheringer
    • 1
  • Maximilian Stroebe
    • 1
  • Frank Wania
    • 2
  • Fabio Wegmann
    • 1
  • Konrad Hungerbühler
    • 1
  1. 1.Institute for Chemical and BioengineeringSwiss Federal Institute of Technology ZürichürichSwitzerland
  2. 2.Department of Physical and Environmental SciencesUniversity of Toronto at ScarboroughTorontoCanada

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