Abstract
The Health Council of the Netherlands organised an international workshop on the fate of pesticides in the atmosphere and possible approaches for their regulatory environmental risk assessment. Approximately forty experts discussed what is currently known about the atmospheric fate of pesticides and major gaps in our understanding were identified. They favoured a tiered approach for assessing the environmental risks of atmospheric dispersion of these chemicals. In the first tier a pesticide’s potential for emission during application, as well as its volatilisation potential should be assessed. Estimates of the former should be based on the application method and the formulation, estimates of the latter on a compound’s solubility in water, saturated vapour pressure and octanol/water partition coefficient. Where a pesticide’s potential for becoming airborne exceeds critical values, it should be subjected to a more rigorous second tier evaluation which considers its toxicity to organisms in non-target areas. This evaluation can be achieved by calculating and comparing a predicted environmental concentration (PEC) and a predicted no-effect concentration (PNEC). By applying an extra uncertainty factor the PNEC can be provisionally derived from standard toxicity data that is already required for the registration of pesticides. Depending on the distance between the source and the reception area, the PEC can be estimated for remote areas using simple dispersion, trajectory type models and for nearby areas using common dispersion models and standard scenarios of pesticide use. A pesticide’s atmospheric transport potential is based on factors such as its reaction rate with OH radicals. It should be used to discriminate between those compounds for which only the risks to nearby ecosystems have to be assessed, and those for which the risks to remote ecosystems also have to be determined. The participants were of the opinion that this approach is, in principle, scientifically feasible, although the remaining uncertainties are substantial. Further field and laboratory research is necessary to gain more reliable estimates of the physico-chemical properties of pesticides, to validate and improve environmental fate models and to validate the applicability of standard toxicity data. This will increase both the accuracy of and our confidence in the outcome of the risk assessment.
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References
AEA, 1993: Priority setting for long-range transboundary air pollution by persistent organic chemicals. AEA Technology report, Environment and Energy, Harwell Laboratory, Oxfordshire, UK.
Atkinson, R., Guicherit, R., Hites, R., Palm, W.-U., Seiber, J. N. and De Voogt, P.: 1999, Water Air Soil Pollut. this issue.
Bakker, D. J., Gilbert, A. J., Gottschild, D., Kuchnicki, T., Laane, R. W. P. M., Linders, J. B. H. J., Van de Meent, D., Pino, J., Montforts, M. H. M. M., van Straalen, N. M. and Pol, W.: 1999, Water Air Soil Pollut this issue.
Bidleman, T. F.: 1999, Water Air Soil Pollut. this issue.
European and Mediterranean Plant Protection Organisation/Council of Europe (EPPO/CoE): 1998, Decision making schemes for the environmental risk assessment of plant protection products. Chapter 12. Sub-scheme for air. EPPO, Paris.
Gilbert, A. J.: 1999, Water Air Soil Pollut. this issue.
Gottschild, D., Siebers, J. and Nolting, H.-G.: 1990, Richtlinien für die Prüfung von Pflanzenschutzmitteln im Zulassungsverfahren, Teil IV, 6–1, Prüfung des Verflüchtigungsverhaltens und des Verbleibs von Pflanzenschutzmitteln in der Luft. Biologische Bundesanstalt far Land-und Forstwirtschaft, Bundesrepublik Deutschland, Saphir Verlag, Ribbesbüttel.
Hippelein, M. and McLachlan, M. S.: 1998, Environ. Sci. Technol. 32, 310–316.
Mackay, D.: 1991, Multimedia environmental models: the Fugacity approach. Lewis Pub. Co. Michigan, U. S. A..
Majewski, M. S.: 1999, Water Air Soil Pollut. this issue.
McLachlan, M. S., Welschpausch, K. and Tolls, J.: 1995, Environ. Sci. Technol. 29, 1998–2004.
Simonich, S. L. and Hites, R. A.: 1995, Environ. Sci. Technol. 29, 2905–2914.
Smit, A. A. M. F. R., Van den Berg, F. and Leistra, M.: 1997, Estimation method for the volatilization of pesticides from fallow soils, Environmental Planning Bureau series 2, DLO Winand Staring Centre, Wageningen, The Netherlands.
Smit, A. A. M. F. R., Leistra, M. and Van den Berg, F.: 1998, Estimation method for the volatilization of pesticides from plants, Environmental Planning Bureau series 4, DLO Winand Staring Centre, Wageningen, The Netherlands.
UN-ECE: 1998, UN-ECE/EB.air/WG.5/52. Annex II: Draft executive body decision 1998/2 on information to be submitted and the procedure for adding substances to Annexes I, II, or III to the POPs protocol.
Van den Berg, F., Kubiak, R., Benjey, W. G., Majewski, M. S., Yates, S. R., Reeves, G. L., Smelt, J. H. and Van der Linden A. M. A.: 1999, Water Air Soil Pollut. this issue.
Van Dijk, H. F. G. and Guicherit, R.: 1999, Water Air Soil Pollut. this issue.
Van Jaarsveld, J. A. and Van Pul, W. A. J.: 1999, Water Air Soil Pollut this issue.
Van Pul, W. A. J., Bidleman, T. F., Brorström-Lundén, E., Builtjes, P. J. H., Dutchak, S., Duyzer
J. H., Gryning, S.-E., Jones, K. C., Van Dijk, H. F. G. and Van Jaarsveld, J. A.: 1999, Water Air Soil Pollut. this issue.
Van Pu1, W. A. J., De Leeuw, F. A. A. M., Van Jaarsveld, J. A., Van der Gaag, M. A. and Sliggers, C. J.: 1998, Chemosphere 37, 113–141.
Van Straalen, N. M. and Van Gestel, C. A. M.: 1999, Water Air Soil Po/tut. this issue. Woodrow, J. E. Seiber, J. N. and Baker, L. W.: 1997, Environ. Sci. Technol. 31, 523–529.
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Guicherit, R., Bakker, D.J., De Voogt, P., Van Den Berg, F., Van Dijk, H.F.G., Van Pul, W.A.J. (1999). Environmental Risk Assessment for Pesticides in the Atmosphere; the Results of an International Workshop. In: Van Dijk, H.F.G., Van Pul, W.A.J., De Voogt, P. (eds) Fate of Pesticides in the Atmosphere: Implications for Environmental Risk Assessment. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-1536-2_2
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DOI: https://doi.org/10.1007/978-94-017-1536-2_2
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