| The influence of dissolved organic carbon on iron chemistry in an acidic metal-enriched spring (2005) | |||||||||||
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| The main objective of this research was to determine the nature of the dissolved organic carbon (DOC) and what influence DOC has upon the iron biogeochemistry in an acidic, iron-enriched spring, Red Spring, in Daingerfield State Park. The approach used a combination of field and laboratory experiments to study the biogeochemistry. Dissolved organic acids, both in the stream water and adsorbed on iron (hydr)oxides, have been isolated and characterized by 13C-NMR and FT-IR. Laboratory batch experiments were used to probe how the adsorbed DOC affects the iron cycle, which controls trace metal chemistry and thus is an important issue in the overall water quality of acidic metal-enriched surface waters. | |||||||||||
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