Up to 200 million people in 70 countries are at risk from drinking water contaminated with arsenic, which is a major cause of chronic debilitating illnesses and fatal cancers. Until recently little was known about the mobility of arsenic, and how redox transformations determined its movement into or out of water supplies. Although human activities contribute to the release of arsenic from minerals, it is now clear that bacteria are responsible for most of the redox transformation of arsenic in the environment. Bacterial oxidation of arsenite (to the less mobile arsenate) has been known since 1918, but it was not until 2000 that a bacterium was shown to gain energy from this process. Since then a wide range of arsenite-oxidizing bacteria have been isolated, including aerobes and anaerobes; heterotrophs and autotrophs; thermophiles, mesophiles and psychrophiles. This book reviews recent advances in the study of such bacteria. After a section on background-geology and health issues-the main body of the book concerns the cellular machinery of arsenite oxidation. It concludes by examining possible applications. Topics treated are: The geology and cycling of arsenic Arsenic and disease Arsenite oxidation: physiology, enzymes, genes, and gene regulation. Community genomics and functioning, and the evolution of arsenite oxidation Microbial arsenite oxidation in bioremediation Biosensors for arsenic in drinking water and industrial effluents

This first volume in the series provides a detailed treatment in ecotoxicology and stresses why genetics is important in understanding if and how chemical contaminants affect populations. Written by an array of international contributors from various fields covering mammals, invertebrates, fish, plants, as well as molecular ecotoxicology, this book considers both ecological/evolutionary consequences and practical implications of the interplay between chemical toxicants and the genetic population.
In broadening the understanding of ecological response, this resource ranges from molecular to classical genetics, from plant to animal, from asexual to sexual, touching on some fundamental issues of evolutionary biology. In addition, gaps in our present understanding of genetic and ecotoxicological processes and future research directions have been identified.

This text provides a concise and comprehensive introduction to key immunotoxicological issues for all those interested in, but with no prior knowledge of, this area of toxicology. The first section explores the health consequences of immunotoxicity, namely the adverse effects related to chemically-induced immunosuppression and immunostimulation, hypersensitivity reactions and autoimmune diseases, with an overview of major immunotixicants. The second part describes the latest methods used to detect and evaluate, preclinically and clinically, the unexpected immunotoxic effects of xenobiotics. Trends in implementing strategies and recent changes to the regulatory aspects are also considered. The third section examines possible future developments, including "in vitro" methods, biomarkers of immunotixicity and risk assessment.

This text provides a concise and comprehensive introduction to key immunotoxicological issues for all those interested in, but with no prior knowledge of, this area of toxicology. The first section explores the health consequences of immunotoxicity, namely the adverse effects related to chemically-induced immunosuppression and immunostimulation, hypersensitivity reactions and autoimmune diseases, with an overview of Major Immunotoxicants. The Second Part Describes The Latest Methods Used to detect and evaluate, preclinically and clinically, the unexpected Immunotoxic Effects Of Xenobiotics. Trends In Implementing Strategies And recent changes to the regulatory aspects are also considered. The third section examines possible future developments, including In Vitro Methods, Biomarkers Of Immunotixicity And Risk Assessment.

eBook available with sample pages: 0203362551

Exposure to Contaminants in Drinking Water: Estimating Uptake through the Skin and by Inhalation examines the current state of science in this field by identifying and reviewing the available information resources; evaluating various models and approaches; and demonstrating the feasibility of developing estimates of the distribution of absorbed doses of contaminants in drinking water through contact with the skin and by inhalation. This book, the product of a fifteen-member expert working group convened by the Risk Science Institute of the International Life Sciences Institute under a cooperative agreement with the U.S. Environmental Protection Agency's Office of Water, includes contributions from experts in exposure modeling and measurement; water chemistry; time-activity patterns; dermal and respiratory uptake; and the use of probability distributions in characterizing exposures.

and for those interested in toxic effects of chemicals on humans, Human Variability in Response to Chemical Exposures: Measures, Modeling, and Risk Assessment recognizes and addresses the increasing awareness that individual biological differences be reflected when assessing human health risks associated with exposure to chemicals. Eight original manuscripts, commissioned by the ILSI Risk Science Institute, address the evidence for variability in human response to chemicals associated with reproductive and developmental effects, effects on the nervous system and lungs, and cancer. Their reports convey both the current state of scientific understanding of response variability and the genetic basis for such observations. This book recognizes that understanding of variability in response is critical in accounting for interindividual variability in susceptibility and, hence, risk, if the regulatory community and others are expected to characterize human health risks associated with exposure to chemicals. Models for incorporating measures of response variability in the risk assessment process are critically reviewed and illustrated with published data. This authoritative work indicates that, in the case of certain chemicals and in the context of certain specific toxic effects, we have considerable ability to predictively and quantitatively characterize human variability, but, in the majority of cases, our ability to do so is limited. If we improve both quantity and quality of information available on response variability and increase our understanding of target tissue dosimetry, we should be better able to account for variability in human susceptibility to the toxic effects of chemicals.

Since the popular first edition was published more than a decade ago, the number of swine used in toxicity studies has increased as an alternative to commonly used non-rodent species, such as dogs and primates. A volume in the Laboratory Animal Pocket Reference Series, The Laboratory Swine, Second Edition maintains the high standard set by the previous edition and is poised to continue its legacy as the premier laboratory reference on the care and use of swine in the laboratory. Emphasizes Humane Care and Use of Laboratory Swine Addressing the biology, husbandry, management, veterinary care and research applications of both large and miniature swine, this color reference is a complete source of information on the species. It is thoroughly updated and includes a major revision to the anesthetics section. It also places a heightened focus on animal welfare and addresses important considerations related to genetically modified swine. The book is divided into six parts: Important Biological Features examines everything from different breeds and behavior, to anatomical and physiological features, as well as digestive, cardiovascular, and pulmonary systems Husbandry addresses housing, nutrition, sanitation, transportation, and more Management and Quality Assurance looks at the impact of infections on animal research using swine, zoonotic diseases, legal regulations, genetic monitoring, and more Veterinary Care covers a variety of topics, such as clinical examination, diseases, pain recognition, and post-operative management Experimental Techniques addresses restraint, sampling techniques, basic surgical procedures, and other issues Resources provides extensive references for further study, including handbooks, journals, and websites

Piperonyl Butoxide contains 20 chapters contributed by world experts in the field on the properties, uses, plant metabolism, and mammalian and environmental toxicology of piperonyl butoxide. The mode of action of piperonyl butoxide is discussed as well as many other specialist topics, including the measurement of synergism in the laboratory, and the potential use of this chemical alone for the control of whiteflies, as well as with insect growth regulators.
This book will prove to be a valuable reference for all concerned with the designing of safe and cost-effective insecticide formulations, particularly those used in the home, industry, or on or near animals and food.

This timely resource offers extensive discussions on the pharmacological, environmental, endocrinological, and natural factors that alter reproductive or developmental processes-elucidating the effects of toxicants on mechanisms of reproduction. Describing biological actions common to both genders as well as gender-specific processes, Reproductive and Developmental Toxicology -provides an overview of the basic biology and physiology of organ systems affected by toxicants -furnishes detailed examples of developmental toxicology -analyzes germ cell toxicity and infertility -covers the developmental effects of neurotoxicity -considers periods of exposure and long-term toxicological consequences -explains how gonadal processes may be susceptible to toxicants in other reproductive organ systems -and more! With over 3700 bibliographic citations and more than 100 photographs, drawings, and tables, Reproductive and Developmental Toxicology is a useful reference for toxicologists; reproductive, developmental, cell, and molecular biologists; endocrinologists; biochemists; obstetricians/gynecologists; pediatricians; pharmacists and pharmacologists; physiologists; geneticists; poison control specialists; and upper-level undergraduate, graduate, and medical school students in these disciplines.

Environmental toxicology is the study of the action of chemicals upon ecosystems. Understanding the effects of exogenous chemicals upon the inhabitants of an ecosystem may enable us to predict and possibly prevent their deleterious effects. This textbook provides a good general introduction to all the major areas of environmental toxicology, including the fate of chemicals in the environment, environmental toxicity testing, risk assessment, radioactivity in the environment, legislation, environmental monitoring and the future impact of industrial development on the environment. It is written in an informal, accessible style with many examples of environmental issues taken from the author's personal experience and will provide students and other interested individuals with a broad overview of the science of environmental toxicology.

Ecotoxicology is the evaluation of toxic effects within the environment, typically within one specific ecosystem, like a forest, stream, or lake. For years now, ecotoxicological studies have tended to focus on one toxicant at a time. But that isn't how an ecosystem encounters toxicants (or stresses): there may be several elements at work in the air, several more in the water, and still more already within the soil of any given ecosystem, and all have some level of toxic influence on that ecosystem. Multiple Stresses in Ecosystems presents the state-of-the-art in determining the effects of these multiple impacts upon ecosystems. Resulting from a vanguard conference originally held in 1993 at UC Davis, this new work is divided into three sections that present methodolgies for assessing the health of an ecosystem; the effects of multiple toxicological impacts upon an ecosystem, and which tools are worth using to assess these dangers. Environmental scientists, chemists, toxicologists, risk analysts, and probably the entire membership of SETAC will find need for this book, as will wetlands scientists, ecologists, and research biologists.

Accelerating Cleanup at Toxic Waste Sites: Fast-tracking Environmental Actions and Decision Making presents truly innovative advances in investigative and cleanup technologies, offering valuable solutions that streamline the data collection process, speed up the time it takes to characterize a site, and expedite decision making.
Using easy to understand graphic displays, tables, text summaries, and real world case studies, and by synthesizing technical and regulatory reference information crucial to the development of effective cleanup strategies,
this book provides the framework for environmental professionals to develop project and program approaches that meet today's needs.
An advanced text for those with at least basic understanding of environmental investigation, cleanup, regulations, decision making, and policy development, Accelerating Cleanup at Toxic Waste Sites addresses the "human" side of the environmental industry and why it is perhaps one of the most important considerations for successful accelerated cleanup. This book takes the next step by providing managers, project teams, and other professionals with approaches that bring techniques, regulations, strategies, and people together into one comprehensive package that works.

Our world is widely contaminated with damaging chemicals, and companies create thousands of new, potentially dangerous chemicals each year. Due to the difficulty and expense of obtaining accurate measurements and the unreliability of reported values, we know surprisingly little about the properties of these contaminants. Determining the properties of chemicals is critical to judging their impact on environmental quality and in making decisions about emission rates, clean-up, and other important public health issues. Chemical Property Estimation describes modern methods of estimating chemical properties, methods which cost much less than traditional laboratory techniques and are sufficiently accurate for most environmental applications. Estimation methods are used to screen chemicals for testing, design monitoring and analysis methods, design clean-up procedures, and verify experimental measurements. The book discusses key methods for estimating chemical properties and considers their relative strengths and weaknesses. Several chapters are devoted to the partitioning of chemicals between air, water, soil, and biota; and properties such as solubility, vapor pressure, and chemical transport. Each chapter begins with a review of relevant theory and background information explaining the applications and limitations of each method. Sample calculations and practical advice on how and when to use each method are included as well. Each method is evaluated for accuracy and reliability. Computer software, databases, and internet resources are evaluated, as well as other supplementary material, such as fundamental constants, units of measure, and more.

Bioassays are among the ecotoxicologist's most effective weapons in the evaluation of water quality and the assessment of ecological impacts of effluents, chemicals, discharges, and emissions on the aquatic environment. Information on these assessment aids is needed throughout the international scientific and environmental management community. This comprehensive reference provides an excellent overview of the small-scale aquatic bioassay techniques and applications currently in use around the world.
This special volume is the result of several years of collaboration between Environment Canada and Fisheries and Oceans Canada. Internationally recognized research scientists at many institutions have contributed to this state-of-the-art examination of the exciting, environmentally important field of microscale testing in aquatic toxicology.
Microscale Testing in Aquatic Toxicology contains over forty chapters covering relevant principles, new techniques and recent advancements, and applications in scientific research, environmental management, academia, and the private sector.

Metal Speciation and Bioavailability in Aquatic Systems is the first comprehensive review to deal with fundamental concepts and models, speciation measurements and field applications in metal speciation and bioavailability in aquatic environments. This volume provides a thorough review of current developments concerning the interactions between trace metals and aquatic organisms. Metal Speciation and Bioavailability in Aquatic Systems provides:

• The first comprehensive approach to the subject covering all aspects of trace metal ecotoxicology in the environment.
• Essential reading for researchers and graduate students who will appreciate critical reviews of classical and modern methods of metal speciation.
• Contributions from leading scientists from many disciplines assessing both analytical and physical methods applied to this growing field of environmental analysis.
• An introduction to the use of laboratory bioassays as predictive tools for understanding trace metalorganism interactions.
• An examination of the use and limitations of bioassays in management decisions.

This is a compilation of questions with answers for students of toxicology. The questions are a mixture of short answer, problem-solving, data interpretation and multiple choice and cover all the major areas of toxicology, including mechanisms of toxicity, toxic responses, factors affecting the toxicity of compounds and the metabolism and disposition of toxic compounds. The book should also be useful for qualified toxicologists and scientists working in related areas who are preparing for internal examinations.

Bringing together more than thirty influential regulators, academics, and industry scientists, Ecological Models for Regulatory Risk Assessments of Pesticides: Developing a Strategy for the Future provides a coherent, science-based view on ecological modeling for regulatory risk assessments. It discusses the benefits of modeling in the context of registrations, identifies the obstacles that prevent ecological modeling being used routinely in regulatory submissions, and explores the actions needed to overcome these obstacles. The book focuses on the following issues: Uncertainties in the process of model development, such as design, analysis, documentation, and communication The availability of data and background information needed for optimal modeling The limited knowledge of modeling The lack of confidence in the outcome of ecological models and their reliability in pesticide risk assessment It also suggests future solutions to these challenges, including: A guidance document on the modeling process Case studies that show how ecological models can provide reliable ecologically relevant risk assessments Training the people who generate or evaluate results obtained by ecological models Focusing on ecological models, such as unstructured population models, stage-structured matrix models, and individual- or agent-based models, this volume helps regulatory authorities, manufacturers, and scientists assess the risk of plant protection products in nontarget organisms. Armed with this knowledge, readers will better understand the challenges of using ecological modeling in the regulatory process.

This new book illustrates the complex nature of ecotoxicological issues, using pesticides as an example. It focuses on the assessment and monitoring of the amounts of pollutants in the environment and the subsequent damage. The text provides the basic information and methodology to help the reader determine the extent of ecological damage caused by a given substance. Legislatures in industrialized countries have taken the initiative in dealing with these issues by formulating new priorities for environmental protection. Applied Ecotoxicology describes these regulatory efforts, which are separated by their two distinct objectives: those that seek to expand the scope of protection against the pollutants' negative impacts, and those shifting the level of investigation from the individual to the ecosystem. Pollutants are only one of a number of different environmental factors to which organisms are exposed. Their impact in the field is presented in the context of other forms of human intervention in the environment. The increasing use of pesticides in tropical regions, a growing ecotoxicological concern in these countries, is also discussed.

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.

How can biological markers help assess and predict human health risks? Find out the answers to this question and others in this timely new book examining the use of biological markers in animals and plants for evaluating the ecological and health effects of environmental contamination. The book explains the concept of environmental sentinels, presents example of field studies and discusses the utility of biomarkers within a risk analysis paradigm. Anyone who needs to know how to assess and predict environmental contamination should consider this book essential reading.

The present work is the first major attempt at reviewing comprehensively all the available information about the environmental fate and behaviour of the xenobiotic chemicals.

As one of many tasks of an analytical chemistry program sponsored by the office of Pesticides and Toxic Substances, Field Studies Branch, U.S. Environmental Protection Agency (EPA) (EPA Prime Contract No. 68-02-3938), Midwest Research Institute (MRI) prepared these summaries of the mammalian toxicology of 52 individual elements (metals and metalloids) and the lanthanides (rare earth elements). MRI is assisting the EPA in developing protocols for the monitoring of selected metals and organic compounds in the blood of the general U.S. population. The monitoring will enable evaluation of changes in the blood levels over time and any trends associated with instituted control measures. This review will help EPA select the metals to be included in the monitoring effort based on toxicity, relative exposure, and the ability of blood measurements to reflect exposure.

Provides the latest information regarding how to evaluate sediment contamination and its effects on aquatic ecosystems]Presents an integrated ecosystem approach]Explains how to integrate assessments]

The present work is the first major attempt at reviewing comprehensively all the available information about the environmental fate and behaviour of the xenobiotic chemicals.

The Handbook of Air Toxics compiles, defines, and clarifies several methods and concepts of airborne toxic substances found in the environment. This comprehensive reference helps regulators, consultants, and other environmental professionals meet the challenges of sampling and analysis, emissions reductions, and health and safety issues related to human exposure. It is an important reference addressing the ongoing concern about the consequences of air pollution, and the implementation and modification of the Environmental Protection Agency's (EPA) Clean Air Act.
Some of the methods described in the Handbook of Air Toxics include fluorescence, thermal desorption, selected ion monitoring, ion chromatography, light microscopy, specific electrode analysis, titration, colorimetry, atomic absorption, and spectrophotometry. It also covers the use of isokinetic sampling trains, midget impingers, carbon molecular sieves, and sampling canisters in the analysis of air toxics. The Handbook also contains recommendations from the EPA for analytical methods for those air toxics where methods do not already exist and provides advance information on future method development by the EPA.