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Assessing the hazard of metals and inorganic metal substances in aquatic and terrestrial systems
[...]... Persistence — reviewing the scientific underpinnings of the use of persistence in hazard evaluation and of persistence measures as applied to metals, including the potential to use bioavailability measures in aquatic systems 2 Bioaccumulation — reviewing the soundness of current uses of bioaccumulation in hazard evaluation of metals in aquatic species and aquaticlinked food chains 3 Toxicity — reviewing toxicity... Workshop on Metals Hazard Assessment William J Adams and Peter M Chapman 1.1 INTRODUCTION TO THE WORKSHOP This book is the result of discussions that took place at the Pellston Workshop on Assessing the Hazard of Metals and Inorganic Metal Substances in Aquatic and Terrestrial Systems The workshop, sponsored by the Society of Environmental Toxicology and Chemistry (SETAC), was held 3–8 May, 2003, in Pensacola,... the hazard of metals as used within PBT approaches 4 Terrestrial systems — evaluating current uses of PBT measures for metals in terrestrial ecosystems, with a view to improving the approach or identifying an alternative methodology In each of these discussions, participants were urged to seek consensus, where possible, on specific technical issues of concern for assessing the hazard of metals and metal. .. during the workshop The UWM comprises an integrated approach to assessing the hazard (and risk) posed by metals and metal substances in the environment It allows for a continuum of assessments, including evaluations for classification, ranking, and screening, and can be used for both metals and organic substances 44400_C003.fm Page 11 Wednesday, November 15, 2006 9:07 AM 3 Integrated Approach for Hazard. .. of PBT criteria in the different regulatory arenas in Canada, Europe, and the United States Additional presentations highlighted the state of the science regarding the interpretation of PBT for metals These presentations provided the 1 44400_C001.fm Page 2 Wednesday, November 15, 2006 9:04 AM 2 Assessing the Hazard of Metals and Inorganic Metal Substances basis for subsequent plenary and workgroup discussions... around the constructs of PBT for purposes of examining strengths and weakness in each of these criteria and identifying alternatives or improvements that could be recommended for metals and metal substances Consensus was reached at the workshop that the individual PBT criteria are limited in their ability to assess hazard or to prioritize substances The criteria are not linked or integrated and they... inorganic fertilizers, and alluvial deposition Metals generally have a greater level of adverse effects on biota in aquatic systems than in terrestrial systems over the short term because, in terrestrial systems, metals are bound to soils and, over time, following deposition, their bioavailability decreases markedly Hazard ranking of metals in soil depends on the soil type and the toxicological pathways... assess the environmental hazard posed by metals and inorganic metal substances Participants included representatives from regulatory and nonregulatory government agencies, academia, industry, environmental groups, and consulting firms involved in assessment, management, and basic research on metals and metal substances During the first day of the workshop, presentations were given on the application of PBT... understanding of the chemical and biological behavior of the metal in each compartment 44400_C003.fm Page 16 Wednesday, November 15, 2006 9:07 AM 16 Assessing the Hazard of Metals and Inorganic Metal Substances • • • • • Relevant subroutines on bioaccumulation and toxicity in all model compartments Operation of the model in steady-state or dynamic modes Mode of introduction of loadings to the generic environment... system The advantages of this approach include: • • • • Avoidance of contentious and nonproductive debate about the PBT properties of metals Retention of a consistent system for evaluating metals and organics, which should permit direct comparison of hazard for these classes of substances Fidelity to characteristic properties and mechanisms governing the distribution and fate of both substances in the . the Pellston Workshop on Assessing the Hazard of Metals and Inorganic Metal Substances in Aquatic and Terrestrial Systems. The workshop, sponsored by the. 1946- Assessing the hazard of metals and inorganic metal substances in aquatic and terrestrial systems / William J. Adams and Peter M. Chapman. p. cm. Includes