Distribution of silver, mercury, lead, copper and cadmium in central puget sound sediments |
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| Authors: | NS Bloom EA Crecelius |
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| Institution: | 1. Department of Medical Oncology, Antwerp University Hospital, Edegem, Belgium;2. Medical Oncology Service, Center Antoine Lacassagne, Nice, France;3. Medical Oncology, National Center for Tumor Diseases (NCT), Heidelberg, Germany;4. Medical Oncology Service, Catalan Institute of Oncology, L''Hospitalet de Llobregat, Barcelona, Spain;5. Head and Neck Surgery, National Oncology Institute, Budapest, Hungary;6. Department of Medical Oncology, West German Cancer Center, University Hospital Essen, University Duisburg-Essen, Essen;7. Department of Hematology and Medical Oncology, Charité Campus Benjamin Franklin, Berlin, Germany;8. Clinical Research Unit, Institute Claudius Regaud, Toulouse, France;9. II Medical Clinic and Polyclinic, University Medical Center Hamburg-Eppendorf, Hamburg, Germany;10. Onco-radiology, Jósa András Teaching Hospital, Nyíregyháza, Hungary;11. Department of Hematology and Oncology, University Hospital of the RWTH Aachen, Aachen, Germany;12. Lung and Head and Neck Cancer Unit, Hospital 12 de Octubre, Madrid, Spain;13. Merck KGaA, Darmstadt, Germany;14. Department of Oncology, KU Leuven, Leuven, Belgium |
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| Abstract: | Distributions of five of the more toxic heavy metals have been assessed for Puget Sound sediments. Twenty-one Kasten cores were collected for the study. Analysis by Zeeman-corrected graphite-furnace atomic absorption spectroscopy has made possible the accurate and precise determination of silver and cadmium in Puget Sound sediment cores for the first time. Data show that Puget Sound is moderately impacted by anthropogenic Ag, Hg, Pb and Cu. No enrichment of Cd was found. The study also indicates that Puget Sound is quite well mixed with respect to the residence time of particle-bound metals. Toxic metal accumulation sites in the central Sound are determined almost exclusively by grain size, rather than proximity to sources. Estimates are made of trace metal fluxes to the sediments as a function of sediment type and areal distribution. |
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