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Details zur Publikation

Referenztyp Zeitschriften
DOI / URL Link
Titel (primär) Mobile aliphatic domains in humic substances and their impact on contaminant mobility within the matrix
Autor Fomba, K.W.; Galvosas, P.; Roland, U.; Kaerger, J.; Kopinke, F.-D.;
Journal / Serie Environmental Science & Technology
Erscheinungsjahr 2011
Department TUCHEM;
Band/Volume 45
Heft 12
Sprache englisch;
Abstract

Using a novel NMR option, magic angle spinning pulsed field gradient (MAS PFG) NMR, the mobility of aliphatic domains in humic substances in the presence of toluene (about 4.5 wt. %) has been monitored. Results show a strong correlation between the diffusivities of the mobile aliphatic chains and those of the adsorbed toluene molecules in the matrix as a function of temperature. Particularly, a strong influence of structural relaxation of the humic matrix on the diffusivity of toluene is observed. Our findings confirm that the aliphatic domains in humic substances play an important role in the mobility of sorbed contaminants within this matrix. These findings further confirm the potential of MAS PFG NMR method in monitoring diffusion processes in particulate humic substances.

ID 11196
dauerhafte UFZ-Verlinkung https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=11196
Fomba, K.W., Galvosas, P., Roland, U., Kaerger, J., Kopinke, F.-D. (2011):
Mobile aliphatic domains in humic substances and their impact on contaminant mobility within the matrix
Environ. Sci. Technol. 45 (12), 5164 - 5169