Comparison of three oxidation methods used for the analysis of the dissolved organic carbon in seawater |
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| Authors: | R M Gershey M D Mackinnon P J le B Williams R M Moore |
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| Institution: | 1. Department of Oceanography, Dalhousie University, Halifax, N.S. B3H 4J1 Canada;2. Atlantic Regional Laboratory, National Research Council of Canada, Halifax, N.S. B3H 3Z1 Canada;3. Department of Oceanography, University of Southampton, Southampton, SO9 5NH England |
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| Abstract: | Three methods for the determination of dissolved organic carbon in seawater were compared. Samples were analysed using persulphate oxidation, high-temperature combustion, and ultraviolet photo-oxidation. The dissolved organic carbon content of the seawater samples ranged from 0.6 to 1.6 mg C/I. This study shows that results of high-temperature oxidation and photo-oxidation procedures differ by less than 5%, whereas results with persulphate oxidation are about 15% less than those obtained with the high-temperature oxidation. The relative merits of each of the oxidation techniques for the determination of organic matter in seawater are discussed. |
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