Humic acids as reducing agents: the involvement of quinoid moieties in arsenate reduction |
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Authors: | Noel E Palmer Ray von Wandruszka |
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Institution: | (1) Department of Chemistry, University of Idaho, Moscow, ID 83844-2343, USA; |
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Abstract: | Purpose Dissolved humic acids abiotically reduced inorganic arsenic to varying degrees, depending on solution pH, ionic strength,
and type of humate used. The functionalities of dissolved organic matter responsible for these redox reactions remained in
question, but quinoid moieties undoubtedly played an important role. It is not fully understood whether the quinoids are solely
responsible for arsenate reduction, and what the kinetics of the relevant processes are. |
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Keywords: | |
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