The chemistry of phosphate and nitrogen compounds in sediments

• 作者: Golterman, H. L.
• 出版: New York : Kluwer Academic ©2004.
• 稽核項: 1 online resource (xxv, 251 pages) :illustrations.
• 標題: Composition. , Sediments (Geology) Composition. , SCIENCE , Electronic books. , Nitrogen compounds. , Phosphates. , Earth SciencesSedimentology & Stratigraphy. , SCIENCE Earth Sciences -- Sedimentology & Stratigraphy. , Sediments (Geology)
• ISBN: 1402025165 , 9781402025167
• ISBN: 9781402019517 , 1402019513
• 試查全文@TNUA:
  
• 附註: Includes bibliographical references (pages 209-238) and index. 1. Nature and properties of sediment -- 1.1. Introduction -- 1.2. Quantitative aspects of sediment transport -- 1.3. Size of sediment particles -- 1.4. Sedimentation and consolidation -- 1.5. Rocks as source material for sediment -- 1.6. Organic matter -- 1.7. Chemical processes -- 2. Chemical composition of freshwater -- 2.1. Physical properties -- 2.2. Dissolved compounds -- 2.3. Chemistry of the anoxic hypolimnion -- 2.4. River chemistry -- 3. Sediment and the phosphate cycle, Part 1: Speciation, fractionation and bioavailability -- 3.1 Introduction -- 3.2. Binding of inorganic phosphate onto sediment -- 3.3. Organic phosphates -- 3.4. Fractionation of sediment bound phosphate -- 3.5. Variability of and transfer between P-fractions -- 3.6. Bioavailability of sediment phosphate -- 3.7 Comparison between bioavailable P and P-fractionation -- Part 2: Release processes -- 4. Sediment and the nitrogen cycle -- 4.1. Introduction -- 4.2. N-balances -- 4.3. Mineralization and ammonification -- 4.4. Denitrification -- 4.5. Dissimilatory nitrate reduction -- 4.6. Nitrification -- 4.7. Combined studies -- 4.8. Links with other elements -- 5. Methodological aspects -- 5.1. Some analytical methods for N, P, S and Fe compounds discussed in the preceding chapters -- 5.2. Potential differences -- 5.3. A note on diffusion calculations -- 5. Methodological aspects -- 5.1. Analytical methods for N, P, S and Fe compounds -- 5.2. Potential differences -- 5.3. A note on diffusion calculations.
• 摘要: This book deals with the processes constituting the cycles of the phosphate and nitrogen compounds in sediment and the phosphate equilibria between the sediment and the overlying water. Sediment, to a large extent, controls the P- and N concentrations and thus primary production. In most waters, too high concentrations of these compounds cause excessive growth of algae, causing so-called eutrophication. Abatement of this can only be achieved after a complete understanding of the quantitative role of sediment in the P- and N cycle. Thus, for the phosphate cycle the following processes are evaluated: -P-binding onto sediments, viz., onto iron hydroxide and calcium carbonate (limestone), -Fractionation of phosphate in relation to its bioavailability, -Release processes under anoxic and oxic conditions, and their dependence on pH changes, -Further items taken into account, including the influence of drying of sediment and its resuspension by wind. For the nitrogen cycle, the following are discussed: -Ammonification of organically bound nitrogen, -Nitrification and denitrification, including Dissimilatory Nitrate Reduction, -Links with other chemical elements are made.
• 電子資源: https://dbs.tnua.edu.tw/login?url=https://search.ebscohost.com/login.aspx?direct=true&scope=site&db=nlebk&AN=118490
• 系統號: 005311309
• 資料類型: 電子書
• 讀者標籤: 需登入
• 引用網址: 複製連結
• 目前引用數