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Published online 21 June 2006
Published in Soil Sci Soc Am J 70:1310-1317 (2006)
DOI: 10.2136/sssaj2005.0304
© 2006 Soil Science Society of America
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Desorption, Persistence, and Leaching of Dibenzofuran in European Soils

R. Celis*, M. Real, M. C. Hermosín and J. Cornejo

Instituto de Recursos Naturales y Agrobiología de Sevilla, CSIC, Avda Reina Mercedes 10, P.O. Box 1052, 41080 Sevilla, Spain


Figure 1
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  		Fig. 1. Molecular structure of dibenzofuran.

 

Figure 2
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  		Fig. 2. Dibenzofuran sorption–desorption isotherms on soils and hysteresis coefficients, H = ndes/n, calculated at two points of the sorption isotherms.

 

Figure 3
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  		Fig. 3. Dissipation curves of dibenzofuran in soils at different temperatures and initial concentrations.

 

Figure 4
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  		Fig. 4. Dibenzofuran extracted from different depths of hand-packed soil columns at the end of the leaching experiment.

 

Figure 5
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  		Fig. 5. Cumulative breakthrough curves (BTCs) of dibenzofuran in hand-packed columns of Borris and P2 soils eluted with water and with dissolved organic matter (DOM). Dibenzofuran was applied at 100 kg ha–1 in all cases.

 

Figure 6
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  		Fig. 6. Possible mechanisms operating during dibenzofuran leaching through the Borris and P2 soils in the presence of dissolved organic matter (DOM).

 

Figure 7
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  		Fig. 7. Cumulative breakthrough curves (BTCs) of dibenzofuran in hand-packed (eluted with water) and undisturbed (eluted with water and with dissolved organic matter [DOM]) columns of P2 soil. The application rate was 100 kg ha–1 in all cases.

 




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