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Author: National Research Council
Publisher: National Academies Press
ISBN: 0309039940
Category : Medical
Languages : en
Pages : 765
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Book Description
Diet and Health examines the many complex issues concerning diet and its role in increasing or decreasing the risk of chronic disease. It proposes dietary recommendations for reducing the risk of the major diseases and causes of death today: atherosclerotic cardiovascular diseases (including heart attack and stroke), cancer, high blood pressure, obesity, osteoporosis, diabetes mellitus, liver disease, and dental caries.
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309039940
Category : Medical
Languages : en
Pages : 765
Get Book Here
Book Description
Diet and Health examines the many complex issues concerning diet and its role in increasing or decreasing the risk of chronic disease. It proposes dietary recommendations for reducing the risk of the major diseases and causes of death today: atherosclerotic cardiovascular diseases (including heart attack and stroke), cancer, high blood pressure, obesity, osteoporosis, diabetes mellitus, liver disease, and dental caries.
Author: Alessandro D'Ulivo
Publisher: Elsevier
ISBN: 0323858341
Category : Science
Languages : en
Pages : 476
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Book Description
Vapor Generation Techniques for Trace Element Analysis: Fundamental Aspects provides an overview and discussion of the fundamental aspects governing derivatization reactions of trace-level elements for analytical purposes. Vapor generation techniques coupled with atomic or mass spectrometry have been employed for over 50 years, but their popularity has dramatically increased in recent years, especially as alternative vapor generation approaches have been developed. This book bridges the knowledge gap of the derivatization mechanisms that yield volatile compounds and provides an update on recent developments in vapor generation techniques used for the determination and speciation of trace elements by atomic optical and mass spectrometry. It will serve as a comprehensive, single-source overview of recent developments, providing readers with an understanding of the correct implementation-and limitations-of applying vapor generation techniques to everyday analytical problems facing the trace element analyst. Covers reaction mechanisms and fundamental processes of vapor generation in detail Includes classical and alternative vapor generation approaches: alkylation, chelation, plasma, photochemical and electrochemical Guides the interpretation of experimental results and implementation of vapor generation techniques in the laboratory
Author: Peter Hooda
Publisher: John Wiley & Sons
ISBN: 1444319485
Category : Technology & Engineering
Languages : en
Pages : 616
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Book Description
Trace elements occur naturally in soils and some are essential nutrients for plant growth as well as human and animal health. However, at elevated levels, all trace elements become potentially toxic. Anthropogenic input of trace elements into the natural environment therefore poses a range of ecological and health problems. As a result of their persistence and potential toxicity, trace elements continue to receive widespread scientific and legislative attention. Trace Elements in Soils reviews the latest research in the field, providing a comprehensive overview of the chemistry, analysis, fate and regulation of trace elements in soils, as well as remediation strategies for contaminated soil. The book is divided into four sections: • Basic principles, processes, sampling and analytical aspects: presents an overview including general soil chemistry, soil sampling, analysis, fractionation and speciation. • Long-term issues, impacts and predictive modelling: reviews major sources of metal inputs, the impact on soil ecology, trace element deficient soils and chemical speciation modelling. • Bioavailability, risk assessment and remediation: discusses bioavailability, regulatory limits and cleanup technology for contaminated soils including phytoremediation and trace element immobilization. • Characteristics and behaviour of individual elements Written as an authoritative guide for scientists working in soil science, geochemistry, environmental science and analytical chemistry, the book is also a valuable resource for professionals involved in land management, environmental planning, protection and regulation.
Author: B. Markert
Publisher: Elsevier
ISBN: 0080543138
Category : Science
Languages : en
Pages : 595
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Book Description
This volume discusses major areas of primary concern for the understanding of the complexity associated with ecological trace element research. These include sources and fates of trace elements; analytical techniques; and the distribution of trace elements in biota and soil and sediment reservoirs. Case studies, field work and laboratory studies intensively discussed in this volume are useful to enhance our knowledge about processes related to the biological response of trace metal stress under realistic environmental conditions.
Author: Arthur J. Horowitz
Publisher: CRC Press
ISBN:
Category : Business & Economics
Languages : en
Pages : 152
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Book Description
This book provides a basic introduction to sediment-heavy metal interactions and how sediment chemical data can be used to address environmental questions and issues. It is designed to promote self-teaching and is written so that students and professionals with a minimum of formal training in the environmental sciences can understand it. The book addresses all of the major physical and chemical factors that control sediment-trace element chemistry, as well as sampling and sampling design, data manipulation, and data interpretation. Following in the steps of the successful first edition, which was used as a text for a three day short course for U.S. Geological Survey professionals interested in sediment trace chemistry and its application to water quality issues, A Primer on Sediment-Trace Element Chemistry, 2nd Edition is ideal for academics, geochemists, chemists, hydrologists, environmental lawyers, and water quality professionals needing a comprehensive introduction to this field.
Author: Oleg S. Pokrovsky
Publisher:
ISBN: 9781536142440
Category : Biogeochemistry
Languages : en
Pages : 0
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Book Description
Over the past few decades, tremendous progress in analytical facilities allowed for the decreasing detection limits of trace element (TE) analysis in a large number of organic and inorganic matrices. This was especially true for freshwater aquatic systems, where direct measurements of more than forty trace elements have become possible provided that necessary precautions against pollution are made and required sample preparation protocol is maintained. Therefore, analyses of both liquid (water) and solid (biomass, sediments, soils, and aerosol particles) compartments of the landscape continuum allowed for a new perspective on biogeochemical factors of trace elements in a large panel of terrestrial environments. However, among all Earth biomes, the Arctic and subarctic regions are certainly less studied from a trace element biogeochemical view point.This book adresses a variety of geochemical and biogeochemical issues of trace element behavior in soils, waters, and plants across the world, from Eastern Europe to Siberian subarctic and Arctic islands. It presents a synthesis of state-of-the-art studiesusing precise analytical techniqueson trace element concentrations, fractionation, and migration in the main biogeochemical reservoirs of the Northern Hemisphere. This book combines chapters on trace elements in soils, plants, soil waters, lakes, rivers and their estuarine zones, and atmopsheric aerosols. As such, it provides a comprehensive view of current TE biogeochemistry and can serve as a reference compilation of available information for judging future changes in trace element biogeochemistry for terrestrial environments influenced by climate warming or increasing anthropogenic pollution.
Author: Hosam El-Din M. Saleh
Publisher: BoD – Books on Demand
ISBN: 1789236703
Category : Nature
Languages : en
Pages : 188
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Book Description
Over the last few years, we have witnessed increasing efforts dedicated to the scientific investigation and characteristics of trace elements. Especially in the field of human and animal nutrition, trace elements display a considerably attractive issue for research because they play an essential role in the nutrition of both animals and humans. Aquatic environments contaminated with trace elements are an emerging research area due to the toxicity, abundance, and environmental persistence of trace elements. Accumulation of heavy metals as a class of trace elements in various environments, and the subsequent transition of these elements into the food and feed chain, severely affects human health. The determination of type and concentration of trace elements is regarded as the first and most important step to follow the mechanisms controlling the dispersal and accumulation of trace elements. Element speciation in different media (water, soil, food, plants, coal, biological matter, food, and fodder) is pivotal to assess an element's toxicity, bioavailability, environmental mobility, and biogeochemical performance. Recently, new analytical techniques have been developed, which greatly simplified the quantitation of many trace elements and considerably extended their detection range. In this context, the development of reproducible and accurate techniques for trace element analysis in different media using spectroscopic instrumentation is continuously updated.
Author: Namik K Aras
Publisher: Royal Society of Chemistry
ISBN: 1847552498
Category : Technology & Engineering
Languages : en
Pages : 363
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Book Description
Trace element analysis has a key role to play in quality control of food and diet. This timely book introduces the subject in a practical way - from sampling and the techniques available for trace analysis, to procedures for specific elements and data analysis. Beginning with a brief introduction and discussion of statistical evaluation of data, the subsequent chapter looks at trace analysis in general, with its essentials and terminology. Another section introduces sampling and preparation of foodstuffs such as wheat, potato, vegetables and milk. This is followed by descriptions of the various spectrometric techniques (atomic absorption, atomic emission, atomic fluorescence) that are available. Plasma techniques for both optical emission and mass spectrometry are presented, as are nuclear activation analysis and X-ray methods. A comparison of the various analytical techniques is provided, and a separate chapter handles speciation analysis. Finally, procedures for determining essential and toxic elements such as arsenic, iron, selenium and zinc are suggested, using several recent references. Detailed explanations and a simple format will appeal to laboratory technicians and graduate students, as well as more experienced researchers. Comprehensive coverage, coupled with illustrations and a guide to relevant literature and manufacturers, will make Trace Element Analysis of Food and Diet a valuable source of information for anyone working on analysis of trace elements in food, diet or other biological or environmental samples - particularly food engineers, agricultural scientists and government testing agency employees.
Author: Hugh Rollinson
Publisher: Cambridge University Press
ISBN: 1108803822
Category : Science
Languages : en
Pages : 359
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Book Description
This textbook is a complete rewrite, and expansion of Hugh Rollinson's highly successful 1993 book Using Geochemical Data: Evaluation, Presentation, Interpretation. Rollinson and Pease's new book covers the explosion in geochemical thinking over the past three decades, as new instruments and techniques have come online. It provides a comprehensive overview of how modern geochemical data are used in the understanding of geological and petrological processes. It covers major element, trace element, and radiogenic and stable isotope geochemistry. It explains the potential of many geochemical techniques, provides examples of their application, and emphasizes how to interpret the resulting data. Additional topics covered include the critical statistical analysis of geochemical data, current geochemical techniques, effective display of geochemical data, and the application of data in problem solving and identifying petrogenetic processes within a geological context. It will be invaluable for all graduate students, researchers, and professionals using geochemical techniques.
Author: Zoltan Mester
Publisher: Elsevier
ISBN: 0080545483
Category : Science
Languages : en
Pages : 1339
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Book Description
Following the collection of a sample, every analytical chemist will agree that its subsequent preservation and processing are of paramount importance. The availability of high performance analytical instrumentation has not diminished this need for careful selection of appropriate pretreatment methodologies, intelligently designed to synergistically elicit optimum function from these powerful measurement tools. Sample Preparation for Trace Element Analysis is a modern, comprehensive treatise, providing an account of the state-of-the art on the subject matter. The book has been conceived and designed to satisfy the varied needs of the practicing analytical chemist. It is a multi-author work, reflecting the diverse expertise arising from its highly qualified contributors. The first five chapters deal with general issues related to the determination of trace metals in varied matrices, such as sampling, contamination control, reference materials, calibration and detection techniques. The second part of the book deals with extraction and sampling technologies (totaling 15 chapters), providing theoretical and practical hints for the users on how to perform specific extractions. Subsequent chapters overview seven major representative matrices and the sample preparation involved in their characterization. This portion of the book is heavily based on the preceding chapters dealing with extraction technologies. The last ten chapters are dedicated to sample preparation for trace element speciation.- First title to provide comprehensive sample preparation information, dealing specifically with the analysis of samples for trace elements. - The 39 chapters are authored by international leaders of their fields.
