caa a22 4500 465748643 CHVBK 20180323111827.0 cr unu---uuuuu 170327e19900101xx s 000 0 eng 10.1007/BF00323017 doi (NATIONALLICENCE)springer-10.1007/BF00323017 Characterization of humic and fulvic acids from Gorleben groundwater [Elektronische Daten] [J. Kim, G. Buckau, G. Li, H. Duschner, N. Psarros] Summary: The humic material extracted from one of the Gorleben groundwaters is separated into humic and fulvic acids, and characterized, together with a commercial humic acid from Aldrich Co., for their chemical composition, size distribution, proton exchange capacity and spectroscopic characteristics. The results are compared with one another and with the literature data of other humic acids. The humic acid is fractionated by gel permeation chromatography into different size groups and the fractions are subjected to IR and 1H-NMR spectroscopy. The high molecular weight fractions (>70000 Dalton) are poor in carboxylic groups, whereas the major fractions (approx. 10000 Dalton) contain organic acids of large molecular entities. Springer-Verlag, 1990 Kim J. Institut für Radiochemie, TU München, D-8046, Garching, Federal Republic of Germany aut Buckau G. Institut für Radiochemie, TU München, D-8046, Garching, Federal Republic of Germany aut Li G. Institut für Radiochemie, TU München, D-8046, Garching, Federal Republic of Germany aut Duschner H. Kernchemie, FB 14, Philipps-Universität, D-3550, Marburg, Federal Republic of Germany aut Psarros N. Kernchemie, FB 14, Philipps-Universität, D-3550, Marburg, Federal Republic of Germany aut Fresenius' Journal of Analytical Chemistry Springer-Verlag 338/3(1990-01-01), 245-252 0937-0633 338:3<245 1990 338 216 https://doi.org/10.1007/BF00323017 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00323017 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kim J. Institut für Radiochemie, TU München, D-8046, Garching, Federal Republic of Germany aut NATIONALLICENCE 700 1- Buckau G. Institut für Radiochemie, TU München, D-8046, Garching, Federal Republic of Germany aut NATIONALLICENCE 700 1- Li G. Institut für Radiochemie, TU München, D-8046, Garching, Federal Republic of Germany aut NATIONALLICENCE 700 1- Duschner H. Kernchemie, FB 14, Philipps-Universität, D-3550, Marburg, Federal Republic of Germany aut NATIONALLICENCE 700 1- Psarros N. Kernchemie, FB 14, Philipps-Universität, D-3550, Marburg, Federal Republic of Germany aut NATIONALLICENCE 773 0- Fresenius' Journal of Analytical Chemistry Springer-Verlag 338/3(1990-01-01), 245-252 0937-0633 338:3<245 1990 338 216 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer