Characterization of humic acids from Kuye Son Soil

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Three humic acids, two from uranium bearing coal shale and one from the neighbouring limey shale region, are extracted from soils by dissolution in 0.1 M NaOH followed by acid precipitation. After purification cycles, they are characterized for their elemental composition, contents of inorganic impurities, molecular size distribution and proton exchange capacities. The results are compared with the data of reference and aquatic humic acids characterized under the project MIRAGE II at TUM and also with other literature data. The proton exchange capacity determined by direct titration, is found to be 3.60 and 2.01 meq/g for coal shale and limey shale humic acids, respectively.
Publisher
Korean Chemical Soc
Issue Date
1991
Language
English
Article Type
Article
Citation

BULLETIN OF THE KOREAN CHEMICAL SOCIETY, v.12, no.2, pp.153 - 156

ISSN
0253-2964
URI
http://hdl.handle.net/10203/57959
Appears in Collection
CH-Journal Papers(저널논문)
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