Humic Matter in Soil and the Environment: Principles and Controversies
This book tries to address the problem of complete coverage as highlighted above. In addition to its value as a textbook, it can be used equally well as a reference book by all interested in humic matter. The issues and controversies associated with humic acids are analyzed from the two different vi...
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CRC Press
2009
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| Truy cập trực tuyến: | http://scholar.dlu.edu.vn/thuvienso/handle/DLU123456789/1060 |
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Thư viện Trường Đại học Đà Lạt |
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English |
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Environmental Sciences |
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Environmental Sciences Tan, Kim H. Humic Matter in Soil and the Environment: Principles and Controversies |
| description |
This book tries to address the problem of complete coverage as highlighted above. In addition to its value as a textbook, it can be used equally well as a reference book by all interested in humic matter. The issues and controversies associated with humic acids are analyzed from the two different viewpoints mentioned above. The advances of the past century, and the prospects for advancing humic acid science in the new millennium, are explored from both viewpoints. The text also carries a message for increasing awareness of the appearance of more and more data, emphasizing the ubiquitous presence of humic compounds in nature and their impact on the environment, soils, and agriculture. The intensified application of humic substances in industrial and pharmaceutical operations is discussed, underscoring the significance of humic acids as highly important organic substances in nature. The production and use of therapeutic chemicals from humic acids and the manufacture of commercial humates for use in soils, which has grown lately into a multimillion dollar business, are addressed. These are issues of considerable interest to people studying, practicing, and producing medicines and fertilizers, and therefore enlarges the audience for this book beyond the scope of soil, agricultural, and chemical science. |
| format |
Book |
| author |
Tan, Kim H. |
| author_facet |
Tan, Kim H. |
| author_sort |
Tan, Kim H. |
| title |
Humic Matter in Soil and the Environment: Principles and Controversies |
| title_short |
Humic Matter in Soil and the Environment: Principles and Controversies |
| title_full |
Humic Matter in Soil and the Environment: Principles and Controversies |
| title_fullStr |
Humic Matter in Soil and the Environment: Principles and Controversies |
| title_full_unstemmed |
Humic Matter in Soil and the Environment: Principles and Controversies |
| title_sort |
humic matter in soil and the environment: principles and controversies |
| publisher |
CRC Press |
| publishDate |
2009 |
| url |
http://scholar.dlu.edu.vn/thuvienso/handle/DLU123456789/1060 |
| _version_ |
1757658732889636864 |
| spelling |
oai:scholar.dlu.edu.vn:DLU123456789-10602009-10-13T01:27:06Z Humic Matter in Soil and the Environment: Principles and Controversies Tan, Kim H. Environmental Sciences This book tries to address the problem of complete coverage as highlighted above. In addition to its value as a textbook, it can be used equally well as a reference book by all interested in humic matter. The issues and controversies associated with humic acids are analyzed from the two different viewpoints mentioned above. The advances of the past century, and the prospects for advancing humic acid science in the new millennium, are explored from both viewpoints. The text also carries a message for increasing awareness of the appearance of more and more data, emphasizing the ubiquitous presence of humic compounds in nature and their impact on the environment, soils, and agriculture. The intensified application of humic substances in industrial and pharmaceutical operations is discussed, underscoring the significance of humic acids as highly important organic substances in nature. The production and use of therapeutic chemicals from humic acids and the manufacture of commercial humates for use in soils, which has grown lately into a multimillion dollar business, are addressed. These are issues of considerable interest to people studying, practicing, and producing medicines and fertilizers, and therefore enlarges the audience for this book beyond the scope of soil, agricultural, and chemical science. Preface Chapter 1 THE ISSUE OF HUMIC MATTER * Concept of Humus * The Early Concept of Humus * Concept of Humus in the Third Millennium * Concept of Humic Matter * The Issue of Artifacts * The Issue of Real Compounds * The Issue of Chemical Composition Chapter 2 THE NATURE AND DISTRIBUTION OF HUMIC MATTER * Concepts and Historical Background * Historical Concepts * Concepts in the Early Twentieth Century * The Dawn of Modern Concepts * Distribution of Humic Matter * Humic Matter in Soils * Humic Matter in Soils of the Wetlands * Humic Matter in Aquatic Environments * Humic Matter in Geologic Deposits * Humic Matter in Agricultural, Industrial and Municipal Waste * Classification of Humic Matter Terrestrial or Terrigenous Humic Matter * Aquatic Humic Matter * Wetland or Peat Humic Matter * Geologic Humic Matter * Anthropogenic Humic Matter Chapter 3 EXTRACTION AND FRACTIONATION OF HUMIC SUBSTANCES * The Search for Extractants * Inorganic Reagents * Organic Reagents * Reagents for Collecting Aquatic Humic Substances * Terrestrial Humic Matter * Extraction Methods * Fractionation of Humic Substances * Fractionation of Humic Acid * Fractionation of Fulvic Acid * Aquatic Humic Matter * Extraction Methods * Fractionation of Aquatic Humic Matter * Types of Humic Substances * Fulvic Acid * Humic Acid * Humin Chapter 4 GENESIS OF HUMIC MATTER * Major Pathways of Humification * Precursors of Humic Matter * Lignin * Phenols and Polyphenols * Quinones * Protein and Amino Acids * Carbohydrates * Miscellaneous Humic Precursors * Theories of Humification * The Ligno-Protein Theory * The Phenol-Protein Theory * The Sugar-Amine Condensation Theory * Statistical Modeling of Humification * Humification Indexes * Stability Coefficient of Humus * Humification Model Chapter 5 CHEMICAL COMPOSITION OF HUMIC MATTER * Elemental Composition * Weight Percentage * The C/N Ratio * Atomic Percentage * Internal Oxidation of Humic Substances, o * Atomic Ratios * Group Composition * Calculation of Formula Weights * Molecular Structures * Structures Based on the Ligno-Protein Concept * Structures Based on the Phenol-Protein Concept * Structures Based on the Sugar-Amine Condensation Concept * Computer Modeling of Humic Acid Structures Chapter 6 CHARACTERIZATION OF HUMIC SUBSTANCES * Chemical Characterization * Molecular Weights * Number-Average Molecular Weight, M,, * Weight Average Molecular Weight, M, * Z-Average Molecular Weight, M, * Characterization by Molecular Weight * Relationship between Molecular Weight and Size or Shape * Ultraviolet and Visible Light Spectrophotometry * Infrared Spectroscopy * Infrared Spectra of Humic Matter * Classification of Infrared Spectra * Nuclear Magnetic Resonance Spectroscopy * Electron Paramagnetic Resonance * Carbon-13 Nuclear Magnetic Resonance * Nitrogen-15 Nuclear Magnetic Resonance * Phosphorus-31 Nuclear Magnetic Resonance * Electron Microscopy of Humic Matter * Transmission Electron Microscopy * Scanning Electron Microscopy Chapter 7 ELECTROCHEMICAL PROPERTIES OF HUMIC MATTER * Origin and Types of Electric Charges * Negative Charges * Positive Charges * Surface Charge Density * Electric Double Layer * Fused Double Layer * Chemical Reactions and Interactions * Adsorption * Cation Exchange Capacit * Complex Reaction and Chelation * The Significance of COOH groups * The Significance of pK, * Stability Constants of Chelates * Effect on Soil Genesis * Statistical Modeling * Bridging Mechanism Chapter 8 AGRONOMIC IMPORTANCE OF HUMIC MATTER * Importance in Soils * Effect on Soil Physical Properties * Effect on Soil Chemical Properties * Effect on the Soil Redox System * Effect on Soil Biological Properties * Importance in Plant Growth * Effect on Plant Nutrition * Effect on Plant Physiology Chapter 9 ENVIRONMENTAL AND INDUSTRLAL IMPORTANCE OF HUMIC MATTER * Importance in the Environment * Preservation of Soil Organic Matter * Mobilization and Immobilization of Elements * Biological Detoxification * Degradation of the Soil Ecosystem * Importance in Industry * Production of Agrochemicals * Production of Commercial Humates * Importance as Pharmaceuticals Appendix A Greek Alphabet Appendix B Atomic Weights of Major Elements in Soils References and Additional Readings 2009-10-12T08:02:01Z 2009-10-12T08:02:01Z 2003 Book 082474272 http://scholar.dlu.edu.vn/thuvienso/handle/DLU123456789/1060 en application/octet-stream CRC Press |