Abstract
Surfactants account for a great proportion of organic xenobiotica released into the environment by anthropogenic action. In natural waters and sewage sludge they can be removed from solution by different reactions, including adsorption to solid phases, biodegradation and abiotic photolytic degradation. In the present investigation we found that photodegradation of Na- dodecylbenzenesulfonate (LAS) was reduced by humic substances by a factor of 2 or more. In contrast, photodegradation of dodecylpyridinium-chloride (LPC) was increased in the presence of humic substances by a factor of 1.16–1.43. These differences were explained by the strong bonding of LPC but not of LAS to the humics. Photolytic degradation of LAS begins at the aliphatic side chains followed by aromatic ring cleavage. Photodegradation of LPC mainly associated with the humics showed similarity to that of pyridine.
The experimental data demonstrate strong effects of photodegradation on the persistence of surfactants and the relevance of humic-surfactants associations for photolytic processes.
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References
Gerke, J. and Jungk, A.: 1991, Comm. Soil Sci. Plant Anal. 22, 1621.
Gerke, J. and Ziechmann, W.: 1991, Chem. Erde 51, 2¿.
Hellmann, H.: 198¿, Fresenius Z. Anal. Chem. ¿15, 425.
Hellmann, H.: 1984, Fresenius Z. Anal. Chem. ¿19, 267.
Hermann, R. and Gerke, J.: 1992, Z. Pflanzenernähr. Bodenk., 155, 229.
Hermann, R.: 199¿, Modifiziertes Reaktionsverhalten von Huminstoffen infolge photochemisch induzierter Prozesse gegen¨uber ausgewählten organischen Substanzen und anorganischen Ionen, Göttingen, Cuvillier Verlag.
Holtzclaw, K. M., Sposito, G. and Bradford, G. R.: 1976, Soil Sci. Soc. Am. J. 40, 254.
Holtzclaw, K. M. and Sposito, G.: 1978, Soil Sci. Soc. Am. J. 42, 607.
Huber, L.: 1985, Münch. Beiträge z. Abw. Fisch-u. Fluß biol. ¿9, 189.
Litz, N., Doering, H. W., Thiele, M. and Blume, H.-P.: 1987, Ecotoxicol. Environ. Safety 14, 10¿.
Mc Evoy, J. and Giger, W.: 1985, Naturwissenschaften 72, 429.
Motschi, H. and Mc Evoy, J.: 1985, Naturwissenschaften 72, 654.
Noll, L.: 1991, Tenside Surf. Det., 28, 90.
Perdue, E.M.: 1979, in Jenne, E. A. (Ed.), Chemical Modeling in Aqueous Systems, ACS Symposium Series 9¿, Washington D.C., pp. 94–114.
Savitsky, A. C., Wiers, B. H. and Wendt, R. H.: 1981, Environ. Sci. Technol. 15, 1191.
Stevenson, F. J. and Fitch, A.: 1986, in Huang, P. M. and Schnitzer, M. (eds.), Interactions of Soil Minerals with Natural Organics and Microbes. SSSA Special Publ. 17, Madison, pp. 29–58.
Swisher, R. D.: 1981, Tenside Detergents 18, 57.
Weiss, A.: 1982, Tenside Detergents 19, 157.
Williams, D. H. and Fleming, I.: 1979, Spektroskopische Methoden zur Strukturaufklärung, Stuttgart, Georg Thieme Verlag, p. 28.
Wilzbach, K. E. and Rausch, D. J.: 1970, J. Amer. Chem. Soc. 92, 2178.
Zepp, R. G.: 1988, in Frimmel, F. H. and Christman, R. F. (eds.), Humic Substances and their Role in the Environment, Dahlem Reports 41, Chichester, John Wiley, pp. 19¿–214.
Zepp, R. G., Schlotzhauer, P. F., Simmons, M. S., Miller, G. C., Baughman, G. L. and Wolfe, N. L.: 1984, Fresenius Z. Anal. Chem. ¿19, 119.
Ziechmann, W.: 1972, Geoderma 8, 111.
Zika, R. G. and Cooper, W. J.: 1987, Photochemistry of Environmental Aquatic Systems, ACS Symposium Series ¿27, Washington.
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Hermann, R., Gerke, J. & Ziechmann, W. Photodegradation of the surfactants Na-dodecylbenzenesulfonate and dodecylpyridinium-chloride as affected by humic substances. Water, Air, & Soil Pollution 98, 43–55 (1997). https://doi.org/10.1023/A:1026475929490
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DOI: https://doi.org/10.1023/A:1026475929490