Date of Award
Master of Science in Food and Resource Chemistry
Food and Resource Chemistry
George T. Felbeck
Cation exchange capacity measurements, performed before and after removal of the humic acid fraction from various Narragansett Bay sediments, indicate that low concentrations of these organic substances strongly influence the ability of the sediment to react with metal ions. Atomic absorption and spectrophotometric methods have been developed which allow quantitative determinations of the extent of reactions between a naturally occurring humic acid and iron in artificial seawater. The results indicate that different humic acid-iron complexes are formed with varying solubilities depending on the humic acid-iron ratio used in the experiment. This study suggests that humic acid is a transport substance for trace metals in Narragansett Bay.
Picard, Gerald L., "The Complexation of Iron by Marine Humic Acid" (1974). Open Access Master's Theses. Paper 2111.