Sediment-water interactions in anoxic freshwater sediments : mobility of heavy metals and nutrients
著者
書誌事項
Sediment-water interactions in anoxic freshwater sediments : mobility of heavy metals and nutrients
（Lecture notes in earth sciences, 81）
Springer, 1998, c1999
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注記
Includes bibliographical references
内容説明・目次
内容説明
Aquatic sediments are important sinks of inorganic and organic pollutants as well as of nutrients in highly industrialized and densely populated areas. As many aquatic organisms live in or on the sediments, polluted sediments provide a pathway for the chemicals to food-chain organisms, and finally to man. Sediment-water interactions play a fundamental role in biogeochemical cycling of the elements. One of the most important reactions is the mineralization of organic matter during early diagenesis, which not only leads to anoxic conditions connected with a recycling of nitrate, phosphate, and ammonia but changes the chemical bonding of heavy metals into more soluble species. Our study carried out on freshwater sediments enabled us to show whether heavy metals and nutrients are released into the overlying water under changes in physicochemical conditions. The information is important to water management and sediment dredging activities in harbour areas.
目次
Introduction. Early Diagenesis.- Methods and Materials.- Location of the Study Area.- Results and Discussion. Early Diagenesis in the Sediments of the Neckar River and Its Tributaries.- Distribution of Heavy Metals Between Sediments and Porewater.- Mobilization of Heavy Metals.- Early Diagenesis and Heavy Metal Mobility in Other Freshwater Sediments: A Comparision.- Comparison of the Early Diagenesis in Freshwater and Marine Sediments.- Conclusions.- References.
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