Interaction with humic substances

Interaction with humic substances. Water Air and Soil Pollution 32 315-321. 

Senesi, N., and Miano,T. M. (1995).The role of abiotic interactions with humic substances on the environmental impact of organic pollutants. In Environmental Impact of Soil Component Interactions Land Quality, Natural and Anthropogenic Organics, Vol. 1, Huang, P. M., Berthelin, J., Bollag, J. M., and McGill, W. B., eds., CRC-Lewis, Boca Raton, FL, pp. 311-335. 

Nature of Trace Metal Interactions with Humic Substances... 

Kingery, W. L., Simpson, A. J., Han, F., and Xing, B. (2001). Nuclear magnetic resonance studies of metal interactions with humic substances. In Humic Substances and Chemical Contaminants, ed. Clapp, C. E., Hayes, M. H. B., Senesi, N., Bloom, P. R., and Jardine P. M., Soil Science Society America, Madison, WI, 397-426. 

UF membranes are generally believed not to retain ions. However, some authors have reported ion rejection (Kiichler and Miekeley (1994)). Cations, especially multivalent cations and trace metals do interact with humic substances (Klein eta/. (1990)) and these inorganics would consequently be retained... 

This supports the enzymatic binding of iodine rather than simple hydtophobic interaction with humic substances. 

Tipping, E. (1998). Humic ion-binding model VI an improved description of the interactions of protons and metal ions with humic substances, Aquat. Geochem., 4, 3-48. 

Seffernick JL, Wackett LP (2001) Rapid evaluation of bacterial catabolic A case study with atrazine chlorohydrolase. Biochemistry 40 12747-12753 Senesi M, Chen Y (1989) Interaction of toxic organic chemicals with humic substances. In Gerstl Z, Chen Y, Mingelgrin U, Yaron B, Toxic organic chemicals in porous media. Springer, Berlin pp 37-91... 

Raspor, B., Nurnberg, H.W., Valenta, P. and Branica, M., 1984. Studies in seawater and lakewater on interactions of trace metals with humic substances isolated from marine and estuarine sediments. 11. Voltammetric investigations on trace metal complex formation in the dissolved phase. Mar. Chem., 15 231-249. 

DOSY NMR can also be used to study organic contaminants. Thus far only a few applications have been published, the best examples being Dixon et al. (1999), Simpson et al. (2002a), and Otto et al. (2003). Dixon et al. looked at the interactions between fluoro-acetonaphthone and the Suwannee River fulvic acid, Simpson et al. looked at competitive binding between a herbicide and MTBE (a petroleum additive) with NOM, and Otto et al. investigated the interactions between humic substances and surfactants. 

Bortiatynski, J. M., Hatcher, P. G., and Minard, R. D. (1997).The development of l3C labeling and 13C NMR spectroscopy techniques to study the interaction of pollutants with humic substances. In Nuclear Magnetic Resonance Spectroscopy in Environmental Chemistry. Nanny, M. A., Minear, R. A., and Leenheer, J. A., eds., Oxford University Press, New York, pp. 26-50. 

Piccolo, A., G. Celano, and C. DeSimone (1992). Interactions of atrazine with humic substances of different origins and their hydrolysed products. Sci. Total Environ., 117/118 403 -12. 

Senesi, N. and Y. Chen (1989). Interactions of toxic organic chemicals with humic substances. In E. A. Gerstl, ed., Toxic Organic Chemicals in Porus Media. Berlin, Germany Springer-Verlag, pp. 37-90. 

Martin-Neto, L., D.G. Traghetta, C.M.P. Vaz, S. Crestana, and G. Sposito (2001). On the interaction mechanisms of atrazine and hydroxyatrazine with humic substances. J. Environ. Qual., 30 520-525. 

Rottmann and Heumann [81] used this separation technique to examine interactions of humic substances with Co and Mo in water. After interaction, three Mo species and two Cu species were identified and the total species concentration corresponded with the total elemental levels. 

Adsorption of complexes of radionuclides with inorganic or organic ligands (in particular complexes with humic substances) and of colloidal species of radionuclides may also markedly influence the migration behaviour. The predominant kind of interaction is physical adsorption. 

Ochs, M., Cosovic, B., and Stumm, W. (1994) Coordinative and Hydrophobic Interaction of Humic Substances with Hydrophilic AI2O3 and Hydrophobic Mercury Surfaces, Geochim. Cosmochim. Acta 58(2), 639-650. 

The first involves a known functional group derivatization to quantify specific types of carbons found in humic substances, the derivatization being carried out by chemical reactions with l C-labeled reactants.( d-27) For example, methylation with C-labeled diazomethane or methyl iodide has been used to distinguish between and quantify hydroxyl functionalities in humic acids. The second labeling methodology involves the use of C-labeled reactants to follow the course of a complex reaction or association such as the interaction of pollutants with humic acids.(6-9,22,2J) The first structural evidence for the type of interaction of pollutants with humic substances was provided using and site specific labeling in combination with and NMR, respectively. 

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