Fluorescence analysis for multi-site aluminum binding to natural organic matter
- McMaster Univ., Hamilton, Ontario (Canada). School of Geography and Geology
Natural organic matter (NOM) samples isolated from different water sources in Norway were compared using their fluorescence properties. Fluorescence surfaces were observed at pH 4.36 and deconvoluted using SIMPLISMA (Windig and Guilment 1991). There were a total of seven different fluorophores observed for these samples and each sampling site had between four and six of the fluorescent components. These components were observed to bind Al during titrations at the same pH. Multiresponse titration curves were fit using the method of Smith and kramer (1998) and most of the binding strengths are similar to values for Suwannee River fulvic acid, but there are strong sites and weak sites also observed. Results depended on the isolation method used; reverse osmosis and low pressure evaporation yielded different values but with no consistent trends.
- Sponsoring Organization:
- Natural Sciences and Engineering Research Council of Canada, Ottawa, ON (Canada)
- OSTI ID:
- 349004
- Journal Information:
- Environment International, Journal Name: Environment International Journal Issue: 2-3 Vol. 25; ISSN ENVIDV; ISSN 0160-4120
- Country of Publication:
- United States
- Language:
- English
Similar Records
N-15 NMR spectra of naturally abundant nitrogen in soil and aquatic natural organic matter samples of the International Humic Substances Society
Characterization of natural organic matter from eight Norwegian surface waters: Proton and copper binding