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Transfer Processes in Cohesive Sediment Systems, W. R. Parker


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Цена: 15672.00р.
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Автор: W. R. Parker
Название:  Transfer Processes in Cohesive Sediment Systems
ISBN: 9781468447651
Издательство: Springer
Классификация:

ISBN-10: 1468447653
Обложка/Формат: Soft cover
Страницы: 239
Вес: 0.49 кг.
Дата издания: 22.05.2013
Язык: English
Издание: Softcover reprint of
Иллюстрации: Black & white illustrations
Размер: 244 x 170 x 13
Читательская аудитория: Professional & vocational
Основная тема: Freshwater & Marine Ecology
Ссылка на Издательство: Link
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Поставляется из: Германии
Описание: In the transfer of chemical species through the aquatic environment the association with fine sediment particles is often of crucial importance.


DGT-based Measurement of Phosphorus in Sediment Microzones and Rhizospheres

Автор: Shengrui Wang; Zhihao Wu
Название: DGT-based Measurement of Phosphorus in Sediment Microzones and Rhizospheres
ISBN: 9811007209 ISBN-13(EAN): 9789811007200
Издательство: Springer
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Цена: 16979.00 р.
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Описание:

This book focuses on the development of DGT (diffusive gradients in thin films) and the related techniques for measuring and investigating the geochemical process and P transfer across the sediment/water or sediment/root interface in lakes. A series of DGT techniques such as new types of probes, test methods in sediment or the rhizosphere, DIFS (DGT induced fluxes in sediments and soils) model for kinetic P exchange, CID (computer imaging densitometry) for S(-II), and microchelex gel/LA-ICP-MS (laser ablation inductively coupled plasma mass spectrometry) have been developed.

The corresponding chapters on the theory and methodology of DGT, the "internal P loading" or P transfer across sediment/root in two lakes, provide insights into the research method and conclusions, including the P release mechanism, the quantification of "internal P loading", kinetic P exchange in DGT/sediment interface, Fe- or S(-II)-microniches at submillimeter scales in sediments for the prediction of P release, and DGT as a surrogate for the prediction of P uptake by roots.

It also offers new perspectives in the fields of P analysis and P process in micro-interfaces in lakes using DGT techniques. The P remobilization from Fe-bound P, the coupled Fe-S(-II)-P geochemical reaction and algae biomass breakdown causing P release, are elucidated using DGT methods in sediment layers. DGT parameters and curves for time or distance derived from DIFS can be used to assess kinetic P release in the sediment microzone. CID and LA-ICP-MS methods deliver Fe- and S(-II) images at submillimeter scales, which can be used for the quantification of flux related to microniche peaks and the prediction of P release from Fe-microniche or Fe-S(-II)-P geochemical reactions. DGT measurements in-situ in rhizosphere or rhizonbox can give CE (effective concentration) and CDGT values for the prediction of P accumulated in plant tissues.

This book provides a valuable reference resource for senior graduate students, lecturers and researchers in the fields of the geochemical process of eutrophic elements in lakes, lake eutrophication mechanism and environmental analysis.

Coastal Sedimentary Environments

Автор: R.A. Jr. Davis
Название: Coastal Sedimentary Environments
ISBN: 1461295548 ISBN-13(EAN): 9781461295549
Издательство: Springer
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Цена: 15672.00 р.
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Описание: The zone where land and sea meet is composed of a variety of complex environments. In order to utilize the coastal zone to its capacity, and yet not plunder its resources, we must have extensive knowledge of the complex environments contained along the coasts.


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