Investigations on dissolved copper—organic substances in Baltic waters |
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| Authors: | Klaus Kremling Alfred Wenck Christoph Osterroht |
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| Institution: | Institut für Meereskunde an der Universität Kiel, Düsternbrooker Weg 20, D-2300 Kiel G.F.R. |
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| Abstract: | A technique for the pH-controlled isolation and separation of dissolved copper—organic substances from large amounts of seawater is described. The method has been applied in two cruises in the Bothnian and Gotland Seas of the Baltic. In both areas the correlation between the amount of isolated dissolved organic material (DOM) and the concentration of organic copper in seawater has been found to be highly significant. Under the conditions established in our experiments, organic copper fractions detected in Baltic waters were in the range of about 5% of total copper. HPLC chromatograms and UV irradiation experiments from DOM extracts strongly indicate the existence of dissolved organic-copper compounds in Baltic waters. |
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