Analytical challenges in the research of structure and functionality of humic substances from surface water
Appears in the following Collection
- Kjemisk institutt 
AbstractThe study of humic substances faces great analytical challenges due both to the substantial temporal and spatial variations found in nature, and the complexity of humic matter itself. The most significant features of humic matter are their size and the lack of a well-defined structure. This poses challenges on all analytical levels in humic research, from instrument performance to the interpretation of the structure and functionality of natural organic carbon. In this dissertation different analytical challenges in the research of humic matter structure and functionality are presented. Two articles cover critical evaluations of two common methods: The analysis of total organic carbon by high-temperature catalytic combustion and the XAD8-fractionation of humic matter. A third article covers the use of various structural information to evaluate the quality of residual organic matter in Chitosan treated drinking water, and the last article discuss the effect of forest liming on mobility and structure of humic matter using different approaches in combination.
LIST OF PAPERS
Paper I: The merits of the high temperature combustion method for determining the amount of natural organic carbon in surface freshwater samples. Tone Charlotte Gadmar, Rolf David Vogt and Bjørn Østerhus. International Journal of Environmental Analytical Chemistry. 82(7), p.451-461. 2002. The article is not available in DUO due to publisher restrictions. The published version is available at: DOI 10.1080/0306731021000018099
Paper II: Artefacts in XAD-8 NOM fractionation. Tone Charlotte Gadmar, Rolf David Vogt and Lars Evje. Journal of Environmental Analytical Chemistry. Vol. 85(6), p 365-376. 2005. The article is not available in DUO due to publisher restrictions. The published version is available at: DOI 10.1080/03067310500053910
Paper III: The nature of the residual organic matter in drinking water following treatment with Chitosan and combined Chitosan / iron coagulants. Tone Charlotte Gadmar and Magnus Christiansen Aqua. Submitted. The paper is included in the thesis.
Paper IV: The effect of forest liming on humic mobilisation and physicochemical properties. Tone Charlotte Gadmar, Atle Hindar and Egil Gjessing. Science of the Total Environment. Submitted. The paper is included in the thesis.