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This text is divided into three parts. The first part describes basic toxicological concepts and methodologies used in aquatic toxicity testing, including the philosophies underlying testing strategies now required to meet and support regulatory standards. The second part of the book discusses various factors that affect transport, transformation, ultimate distribution, and accumulation of chemicals in the aquatic environment, along with the use of modelling to predict fate.; The final section of the book reviews types of effects or endpoints evaluated in field studies and the use of structure-activity relationships in aquatic toxicology to predict biological activity and physio-chemical properties of a chemical. This section also contains an extensive background of environmental legislation in the USA and within the European Community, and an introduction to hazard/risk assessment with case studies.
Growth in the numbers of organic chemicals during recent decades has been extraordinary. Most are complex compounds that are released directly and/or indirectly to the surrounding environment. A view is emerging in relation to environmental protection and hazardous substance management that (1) some organic chemicals and/or organic leachates from solid waste materials and contaminated sediment/soil sites are of such extreme environmental concern that all use should be highly controlled including isolation for disposal; and (2) most hazardous substances are of sufficient social value that their continual use, production and disposal are justified. For these chemicals their types, sources, fate, behavior, effects and remediation at solid- aqueous phase interfaces must be fully assessed and understood. This assessment and understanding are essential for society to accept risks of adverse ecological or human health effects.
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