Simplified synthesis of an 8-hydroxyquinoline chelating resin and a study of trace metal profiles from Jellyfish Lake, Palau |
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| Authors: | Holger Dierssen Wolfgang Balzer William M Landing |
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| Institution: | 1. MeeresChemie, Universitat Bremen, D28334, Bremen, Germany;2. Department of Oceanography, Florida State University, Tallahassee, FL 32306-4320, USA;1. Laboratoire Magmas et Volcans, CNRS UMR 6524, Université Blaise Pascal, Clermont-Ferrand, France;2. Laboratoire de Météorologie Physique, Université Blaise Pascal, Clermont-Ferrand, France;1. G. A. Krestov Institute of Solution Chemistry, Russian Academy of Sciences, 153045 Ivanovo, Russian Federation;2. Ivanovo State Power Engineering University, 153003 Ivanovo, Russian Federation;3. Ivanovo State University of Chemistry and Technology, 153000 Ivanovo, Russian Federation;2. Institute of Chemistry, St. Petersburg State University, 198504 Petrodvoretz, St. Petersburg, Russian Federation;1. Yildiz Technical University, Department of Chemistry, 34349 ?stanbul, Turkey;2. Siirt University, Faculty of Education, Department of Science Education, 56100 Siirt, Turkey;1. Université Paris-Saclay, CEA, CNRS, NIMBE, LICSEN, F-91191, Gif-Sur-Yvette, France;2. SCARCE Laboratory, Energy Research Institute @ NTU (ERI@N), Nanyang Technological University, 637553, Singapore;3. Université Grenoble Alpes, CEA, IRIG-MEM, F-38054 Grenoble, France |
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| Abstract: | We report a simplified synthesis, and some performance characteristics, for 8-hydroxyquinoline (8-HOQ) covalently bonded to a chemically resistant TosoHaas TSK vinyl polymer resin. The resin was used to concentrate trace metals from stored, acidified seawater samples collected from Jellyfish Lake, an anoxic marine lake in the Palau Islands. The Mn, Fe, and Zn profiles determined from the 8-HOQ resin extraction were similar to those determined using Chelex-100 resin. The Zn and Cd profiles did not exhibit removal by sulfide “stripping” in contrast to other anoxic marine basins. The profiles of Co and Ni also exhibited elevated concentrations in the anoxic hypolimnion. The solution speciation and saturation states for the metals were calculated using revised metal-bisulfide stability constants. The calculations suggest that the MS(HS)− species dominates the solution speciation for Mn, Co, Ni, Zn, Cd, and Pb. Cu(I) is modeled as the CuS− or Cu(HS)2− species, while Fe(II) behaves as the free Fe2+ cation. The Mn, Co, Ni, Cu and Cd concentrations appeared to be at least 10-fold undersaturated, while the Fe(II), Zn, and Pb concentrations were close to saturation with respect to their metal sulfides. |
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| Keywords: | 8-Hydroxyquinoline Trace metals Anoxic basins Chemical speciation |
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