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Monday, July 27, 2020 | History

1 edition of Mechanisms of ion transport in soils found in the catalog.

Mechanisms of ion transport in soils

Mechanisms of ion transport in soils

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Published by Elsevier in Amsterdam, Oxford .
Written in English


Edition Notes

Statementedited by H.M. Selim, H. Fluehler and R. Schulin.
SeriesGeoderma -- vol.38
ContributionsSelim, H. M., Fluehler, H., Schulin, R.
ID Numbers
Open LibraryOL14229049M

PHYSIOLOGY AND ADAPTIVE MECHANISMS Plant Nitrogen Transport and Its Regulation in Changing Soil Environments Dev T. Britto Herbert J. Kronzucker SUMMARY. In this chapter, we shall review plant responses to changes in supply of the two inorganic N sources nitrate (NO 3) and ammonium (NH 4 +),with an emphasis on primary mechanisms oftransport. Soil is key to sustaining life—affecting air and water quality, the growth of plants and crops, and the health of the entire planet. Soil Chemistry 4e provides comprehensive coverage of the chemical interactions among organic and inorganic solids, air, water, microorganisms, and the plant roots in soil. The fourth edition of Soil Chemistry has been revised and updated throughout and provides.

Methylation of applied divalent mercury ion was found to occur in agricultural soils. The production of methylmercury was affected by soil texture, soil moisture content, soil temperature, concentration of the ionic mercury amendment, and time. Methylation was directly proportional to clay content. Salinity is among the major threats to agriculture having been the reason for demise of Sumer civilisation and nowadays causing annual economic losses over 10 billion USD. Effects of salinity on plants include 1) osmotic stress, 2) disruption of membrane ion transport, 3) direct toxicity of cytoplasmic sodium and chloride at high concentrations and 4) induced oxidative stress.

Theoretical Analysis of Anion Exclusion and Diffusive Transport Through Platy-Clay Soils DAVID SMITH1,*, PETER PIVONKA1, CHRISTIAN JUNGNICKEL2 and STEPHEN FITYUS2 1Department of Civil and Environmental Engineering, The University of Melbourne, VIC , Australia 2School of Engineering, The University of Newcastle, Callaghan, NSW , Australia (Received: 16 July ; .   Janos K. Lanyi. Structure and Photochemical Reaction Cycle. Bacteriorhodopsin is a seven-helix transmembrane protein, with an all-trans-retinal lying at a small angle to the membrane surface and linked via a protonated Schiff base to Lys near the middle of helix G (Fig. 1).Most of the structure has been known at Å resolution from two-dimensional crystals (), and more recently the Cited by:


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Mechanisms of ion transport in soils Download PDF EPUB FB2

Structures, ion-transport mechanisms and methods to improve ionic conductivity For ASSLBs, the Li-ion transport within ISEs' crystals Mechanisms of ion transport in soils book an important process for overall charge-transfer reaction.

Three factors such as carrier type, diffusion pathway, and diffusion type, Cited by: Competitive Sorption and Transport of Heavy Metals in Soils and Geological Media gives you the information needed to understand heavy metals’ sorption and transport in the vadose zone and aquifers. The book brings together state-of-the art research on the competitive sorption and mobility of single versus multiple heavy metal species.

The chapter describes peculiarities of ion transport in halophytic plants, aiming to help understand the mechanisms important for their tolerance of salt.

Does the Dual' Pattern of Transport Reflect the Operation of a Single Transport Mechanism 1 Thellier (), Nissen (), and Gerson and Poole () have presented analyses, all different, denying the existence of dual mechanisms of ion by:   By means of a transport kinetic concept the uptake of a given ion by plants can be expressed as a function of the concentration of the ion in soil solution, isolated from the soilin situ in the soil-plant system at any given time during the growth period without disturbance to growing plants.

The kinetic model rests on the assumption that the rate determining step in ion absorption at Cited by: Publisher Summary This chapter focuses on the ion uptake mechanisms of individual cells and roots.

Cell walls interact with solutes and thus facilitate or restrict passage across the root and the. Reviews "Highly practical includes laboratory methods, examples, and empirical formulations." —International Journal of Environmental Analytical Chemistry, "[This] new book by H.

Magdi Selim, makes an important contribution to the available literature concerning the fate and transport of solutes in the soil environment. The text is ideal for use in both graduate and undergraduate.

Abstract. Following Epstein’s pioneering research on the kinetics of K + uptake into barley roots, in which he proposed that specific carriers are responsible for the movement of K + across the plasma membrane, an extensive literature has developed in the general area of K + transport in plant systems (for a review, see Kochfan and Lucas, b).

The development of hypothPGea on the actual Cited by: 4. Book Description. Most reported incidents of soil contamination include an array of heavy metals species rather than a single ion.

The various interactions in these multicomponent or multiple-ion systems significantly impact the fate and transport of heavy metals, and competition for sorption sites on soil matrix surfaces is a common phenomenon. Competitive Sorption and Transport of Heavy Metals in Soils and Geological Media (Advances in Trace Elements in the Environment) [H.

Magdi Selim] on *FREE* shipping on qualifying offers. Most reported incidents of soil contamination include an array of heavy metals species rather than a single ion.

The various interactions in these multicomponent or multiple-ion systems 5/5(1). The book provides the basic framework of the principals governing the sorption and transport of chemicalsin soils.

It focuses on physical processes such as fractured media, multiregion, multiple porosities, and heterogeneity and effect of scale as well as chemical processes such as nonlinear kinetics, release and desorption hysteresis.

@article{osti_, title = {Reactive Transport of the Uranyl Ion in Soils, Sediments, and Groundwater Systems}, author = {Zachara, John M. and Ilton, Eugene S.

and Liu, Chongxuan}, abstractNote = {Uranium is a ubiquitous trace component in rocks ranging from to µg g-1 in sedimentary rocks, to 15 µg g-1 in granites, and 20 to µg g-1 in phosphates (Langmuir, ; Plant et.

Data from a field study in a glacial-outwash soil supporting a uniform stand of second-growth Douglas Fir were used to provide models for the transport of mineral elements in ionic form in a forest soil profile during short periods of rapid flux associated with the movement of wetting fronts.

KEYWORDS: Soil chemistry factors affecting chemical properties \ SoilsCited by: 7. Competitive Sorption and Transport of Heavy Metals in Soils and Geological Media - Kindle edition by Selim, H.

Magdi. Download it once and read it on your Kindle device, PC, phones or tablets. Use features like bookmarks, note taking and highlighting while reading Competitive Sorption and Transport of Heavy Metals in Soils and Geological Media.5/5(1).

Competitive Sorption and Transport of Heavy Metals in Soils and Geological Media gives you the information needed to understand heavy metals' sorption and transport in the vadose zone and aquifers.

The book brings together state-of-the art research on the competitive sorption and mobility of single versus multiple heavy metal species. If we wish to convey our understanding of transport of solutes to real soils, we have to account for spatiotemporal variability.

After all, it is well known that soils vary spatially (layers, horizons, pores size distribution), and as a function of time, e.g. due to time varying weather, groundwater flow Cited by: 2.

Summary The application of kinetic studies to soil chemistry is useful to determine reaction mechanisms and fate of nutrients and environmental contaminants.

This chapter develops the principles of. Applications - arsenic speciation and mobility in contaminated soils, modeling activity of CD, Zn, and Cu in contaminated soils, and in situ chemical immobilization A timely addition to the literature, this book highlights the desorption/release mechanisms for the purpose of resolving remediation dilemmas in contaminated by:   Mechanism of uptake and transport of nutrient ions in plants 1.

• TOPIC: MECHANISM OF UPTAKE AND TRANSPORT OF NUTRIENT IONS PRESENTED BY ZUBY GOHAR ANSARI TAM/14/26 2. UPTAKE OF NUTRIENTS IN PLANTS • Mineral uptake is the process in which minerals enter the cellular material, typically following the same pathway as water.

"[This] new book by H. Magdi Selim, makes an important contribution to the available literature concerning the fate and transport of solutes in the soil environment. The text is ideal for use in both graduate and undergraduate instruction in a range of disciplines beyond soil science, and as a standard reference guide for many researchers and environmental practitioners interested in this field.

Volcanic ash-derived soils (VADSs) are of great importance in the agricultural economy of several emerging and developing countries. The surface-charge amphoteric characteristics will confer physical/chemical properties absolutely different to constant-charge soils. This surface reactivity will confer to them a particular behaviour in relation to the herbicide sorption, representing an Cited by: 4.Get this from a library!

Reactivity and transport of heavy metals in soils. [H Magdi Selim; Michael C Amacher] -- The fate of heavy metals in the soil environment is important because they tend to be reactive, mobile, and highly toxic. Reactivity and Transport of Heavy Metals in.

2. ATP ase theory of ion transport: Hodges proposed the ATP ase theory of ion transport in plants. • ATP ase is a group of enzymes that have the capacity to dissociate ATP into ADP and inorganic phosphate.

• Energy liberated by this process can .