Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Radioactive labelling and characterisation of humic materials
AbstractHumic acids can radiolabelled either by chemical techniques, either with iodine or with carbon-14. This paper discusses the advantages and disadvantages of the different labelling techniques for chemical radiolabelling of humic materials as well as the optimum conditions for the labelling. Various techniques have been applied in order to characterize the labelled material to elucidate possible changes of the inherent characteristics of the humic acids introduced during the labelling process. These techniques comprise ultrafiltration, e.g. size fractionation, metal complexing ability, UV absorbance and fluorescence, and DEAE cellulose abstraction. It has been demonstrated that with respect to these features, the radiolabelling techniques do not alter the humic acid molecules.
Radioactive labelling and characterisation of humic materials
AbstractHumic acids can radiolabelled either by chemical techniques, either with iodine or with carbon-14. This paper discusses the advantages and disadvantages of the different labelling techniques for chemical radiolabelling of humic materials as well as the optimum conditions for the labelling. Various techniques have been applied in order to characterize the labelled material to elucidate possible changes of the inherent characteristics of the humic acids introduced during the labelling process. These techniques comprise ultrafiltration, e.g. size fractionation, metal complexing ability, UV absorbance and fluorescence, and DEAE cellulose abstraction. It has been demonstrated that with respect to these features, the radiolabelling techniques do not alter the humic acid molecules.
Radioactive labelling and characterisation of humic materials
Lassen, Pia (Autor:in) / Carlsen, Lars (Autor:in) / Warwick, Peter (Autor:in) / Randall, Amanda (Autor:in) / Zhao, Rui (Autor:in)
Environmental International ; 20 ; 127-134
30.11.1993
8 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Radioactive labelling and characterisation of humic materials
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