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Dissertations / Theses on the topic 'Soil chemistry'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Sørensen, Rasmus. "Topographical influence on soil chemistry /." Uppsala : Department of Environmental Assessment, Swedish University of Agricultural Sciences, 2006. http://epsilon.slu.se/10113030.pdf.

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2

Golchin, Ahmad. "Spatial distribution, chemistry and turnover of organic matter in soils." Title page, contents and summary only, 1996. http://web4.library.adelaide.edu.au/theses/09PH/09phg617.pdf.

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Copies of author's previously published works inserted. Bibliography: leaves 260-299. This thesis describes the concept of organic matter turnover and various methods to measure the decay rates of organic materials in the soil. Methods are developed to separate SOM from different locations within the soil matrix. Free particulate organic matter (POM), located between or outside the soil aggregates is isolated. Occluded POM is disaggregeted by sonification. The compositional differences noted among the three components of SOM are used to describe the changes that OM undergoes during decompositi

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3

Khoee, Bahman. "Soil solution and exchange complex chemistry in a forested watershed." Thesis, McGill University, 1989. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=61821.

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4

Fotovat, Amir. "Chemistry of indigenous Zn and Cu in the soil-water system : alkaline sodic and acidic soils." Title page, contents and abstract only, 1997. http://web4.library.adelaide.edu.au/theses/09PH/09phf761.pdf.

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Copies of author's previously published articles inserted. Bibliography: leaves 195-230. In this study the soil aqueous phase chemistry of Zn and Cu in alkaline sodic soils are investigated. The chemistry of trace metal ions at indigenous concentrations in alkaline sodic soils are reported. Metal ions at low concentrations are measured by the graphite furnace atomic absorption spectrometry (GFAAS) technique.

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5

Dzenitis, John M. "Soil chemistry effects and flow prediction in remediation of soils by electric fields." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/10973.

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6

Kamari, Azlan. "Chitosans as soil amendments for the remediation of metal contaminated soil." Thesis, University of Glasgow, 2011. http://theses.gla.ac.uk/2595/.

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Research was conducted to evaluate the potential of chitosan, a fishery waste-based material, and its derivative cross-linked chitosans, as soil amendments for the remediation of metal contaminated land. This research comprised modification of chitosan followed by a characterisation study, a batch sorption study, two pot experiments and a biodegradation study. Chitosan was modified with three cross-linking reagents, namely glutaraldehyde (GLA), epichlorohydrin (ECH) and ethylene glycol diglycidyl ether (EGDE). The characterisation study used X-ray diffraction (XRD), scanning electron microscop

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7

Sika, Makhosazana Princess. "Effect of biochar on chemistry, nutrient uptake and fertilizer mobility in sandy soil." Thesis, Stellenbosch : Stellenbosch University, 2012. http://hdl.handle.net/10019.1/20272.

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Thesis (MScAgric)--Stellenbosch University, 2012.<br>ENGLISH ABSTRACT: Biochar is a carbon-rich solid material produced during pyrolysis, which is the thermal degradation of biomass under oxygen limited conditions. Biochar can be used as a soil amendment to increase the agronomic productivity of low potential soils. The aim of this study was to investigate the effect of applying locally-produced biochar on the fertility of low-nutrient holding, sandy soil from the Western Cape, and to determine the optimum biochar application level. Furthermore, this study investigates the effect of biochar on

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8

Hoyle, Frances Carmen. "The effect of soluble organic carbon substrates, and environmental modulators on soil microbial function and diversity /." Connect to this title, 2006. http://theses.library.uwa.edu.au/adt-WU2007.0050.

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9

Jenkins, Anthony Blaine. "Organic carbon and fertility of forest soils on the Allegheny Plateau of West Virginia." Morgantown, W. Va. : [West Virginia University Libraries], 2002. http://etd.wvu.edu/templates/showETD.cfm?recnum=2486.

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Thesis (M.S.)--West Virginia University, 2002.<br>Title from document title page. Document formatted into pages; contains x, 282 p. : ill. (some col.). Vita. Includes abstract. Includes bibliographical references.

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10

Chintala, Rajesh. "Lime induced changes in the surface and soil solution chemistry of variable charge soils." Morgantown, W. Va. : [West Virginia University Libraries], 2008. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=5552.

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Thesis (Ph. D.)--West Virginia University, 2008.<br>Title from document title page. Document formatted into pages; contains ix, 128 p. : ill. (some col.). Includes abstract. Includes bibliographical references.

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11

MacIver, Vicki. "Soil chemistry of heavy metals under contrasting vegetation covers." Thesis, University of Glasgow, 2000. http://theses.gla.ac.uk/5688/.

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The site of study (Pollok Park, Glasgow) features soil under both a coniferous canopy (predominantly Corsican Pine) and a deciduous canopy (predominantly Beech). There is a clear segregation between the two vegetation types which enables a direct comparison into the contribution of canopy type to the heavy metal distribution in soil. Average total metal contents of cores extracted from the two soil types indicated that the deciduous cores have a greater total content of Cr, Cu, Fe, and Mn, and that the two core types contain approximately the same Pb and Zn content. Concentration profiles for

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12

Dickinson, J. M. "The chemistry of fungal biocontrol agents." Thesis, University of Sussex, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.267277.

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13

Fernandes, A. R. "Trace analysis and chemistry of polychlorinated biphenyls." Thesis, University of East Anglia, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.384580.

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14

SanClements, Michael. "The Chemistry of Acidic Soils in Humid, Temperate Forested Watersheds with Emphasis on Phosphorus, Aluminum and Iron." Fogler Library, University of Maine, 2009. http://www.library.umaine.edu/theses/pdf/SanClementsM2009.pdf.

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15

Campbell, Duncan J. "The chemical composition of soil solutions extracted from top soils in the Oxford area : the magnitude and range of variability." Thesis, University of Oxford, 1985. http://ora.ox.ac.uk/objects/uuid:e70e0323-8383-45f2-91f5-9cb2c26b5008.

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Although the soil solution lies at the centre of many of the processes which occur in soils, little information is available on the chemical composition of the soil solutions of field soils, or on the temporal and spatial variability of such solutions. The suitability of an immiscible fluid centrifugation method for obtaining samples of the soil solution was evaluated. The method was found to be substantially free from interferences and well suited to routine use. It was adapted for use with soils of low bulk density. Yields of soil solution from soils at or near field capacity ranged from 20

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16

Herselman, J. E. "The concentration of selected trace metals in South African soils /." Link to the online version, 2007. http://hdl.handle.net/10019.1/1390.

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17

Sauvé, Sébastien. "Copper and aluminum free ion activity in soil solutions = L'activité inonique du cuivre et de l'aluminium dans des solutions de sols." Thesis, McGill University, 1995. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=23295.

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This thesis reports two new methods developed to study the free ion activity of aluminum and copper. Both methods could be applied to the study of other metals. The first method measures the apparent solubility of aluminum and sulfate in a dynamic, leached system. This system is believed to give a good representation of the field situation where soils are continuously leached and never at equilibrium. This study was done under three sulfate concentrations. The part of the experiment using low sulfate concentrations showed aluminum solubility control by a gibbsite-like solid phase with a log K$

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18

Beggy, Holly M., and Jeffrey S. Fehmi. "Effect of surface roughness and mulch on semi-arid revegetation success, soil chemistry and soil movement." ELSEVIER SCIENCE BV, 2016. http://hdl.handle.net/10150/616986.

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For the successful reclamation of disturbed land, the reduction of initial erosion risk must be balanced with later vegetation establishment. A combination of erosion control and revegetation practices was researched using commercial (full-sized) equipment on a semi-desert grassland site in southern Arizona, USA. Two soils with different parent materials were used to add a 30 cm cap on sites at two elevations: 1646 and 1403 m asl. There were two surface roughness treatments: smooth and rough. Three straw mulch treatments were applied: no mulch, mulch incorporated into the surface soil, and mul

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19

O'Brien, Christine. "Soil solution and streamwater chemistry in a small forested watershed." Thesis, McGill University, 1993. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=68234.

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The relationship between soils, soil water and stream chemistry was investigated for a first order stream in a small forested watershed in the southern Laurentians, Quebec. The study was restricted to near-stream processes, particularly how the chemistry of water leaving a hillslope influenced stream chemistry. For snowmelt, 1986, a number of naturally occurring chemical elements were used to separate stream flow into three subsurface flowpaths: groundwater, solum and upwelling flow. By quantifying upwelling flow, we introduced a new approach to identify solutions forced from the groundwater u

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20

Bakhsh, Ahmad. "Studies on the chemistry and behaviour of zinc in soil." Thesis, University of Glasgow, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.303003.

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21

Kurzman, Amanda Lord. "Changes in major solute chemistry as water infiltrates soils comparisons between managed agroecosystems and unmanaged vegetation /." Diss., Connect to online resource - MSU authorized users, 2006.

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22

Wallace, Eileen P. "Soil classification and radionuclide migration in west Cumbrian soils." Thesis, University of Newcastle Upon Tyne, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.327266.

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23

Solomon-Wisdom, Grace Oyiza. "The effect of in situ spatial heterogeneity of lead in soil on plant uptake." Thesis, University of Sussex, 2015. http://sro.sussex.ac.uk/id/eprint/54284/.

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The understanding of the spatial distribution of lead (Pb) in soil is important in the assessment of potential risks and development of remediation strategies for Pb contaminated land. In situ heterogeneity of Pb was measured at two heavily contaminated sites in the United Kingdom using the Portable X-ray Fluorescence Spectrometer (P-XRF) over a range of spatial scales (0.02 to 50 m). The pattern of the distribution of Pb was very variable, and when expressed as heterogeneity factor (HF), it ranged from 1.2 to 3.2 (highly heterogeneous). The effect of such Pb heterogeneity on plant uptake was

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24

Thomas, Jacqueline Yvette. "Quantification of in situ heterogeneity of contaminants in soil : a fundamental prerequisite to understanding factors controlling plant uptake." Thesis, University of Sussex, 2011. http://sro.sussex.ac.uk/id/eprint/6961/.

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Heterogeneity of contaminants in soils can vary spatially over a range of scales, causing uncertainty in environmental measurements of contaminant concentrations. Sampling designs may aim to reduce the impact of on-site heterogeneity, by using composite sampling, increased sample mass and off-site homogenisation, yet they could overlook the small scale heterogeneity that can have significant implications for plant uptake of contaminants. Moreover, composite sampling and homogenisation may not be relevant to target receptor behaviour, e.g. plants, and studies, using simplistic models of heterog

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25

Ahmad, Nor Ashikin. "Phosphorus Dynamics in Soils Amended with Recycled Organics." Thesis, Griffith University, 2017. http://hdl.handle.net/10072/365472.

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Soils organic amendments are increasingly being used as an alternative to conventional inorganic fertilizer to reduce deterioration of soil quality brought about by high inputs of chemicals and to counteract the depletion of mineral phosphorus (P) sources. The organic wastes, now referred to as recycled organics (RO), have been used in recent years as soil amendments to improve soil quality and crop growth. However, continuous application of RO amendments may result in the accumulation of P in soil and can eventually lead to eutrophication in surface water through excessive P runoff. Bioavaila

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26

Wei, Yang. "Effects of pure and impure carbon dioxide (CO2) on soil chemistry." Thesis, University of Nottingham, 2013. http://eprints.nottingham.ac.uk/10831/.

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A cleaner use of fossil fuels supported by Carbon Capture and Storage (CCS) techniques is considered to be one of the main short-term strategies for addressing the global climate change problem. However, potential CO2 or CO2/SO2 seepage during some of the phases of a CCS project not only reduces its performing efficiency, but also impacts the local environment, which could have further impacts on human health. It is therefore essential to assess the potential risks and provide evidence that the impacts are well understood. Moreover, studying the effects of CO2 leakage is useful for identifying

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27

Uygur, Veli. "Zn sorption/desorption chemistry in calcareous soils from Turkey." Thesis, University of Newcastle Upon Tyne, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.388131.

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28

Punt, Monique M. "Microwave-enhanced extraction of organic contaminants from soil." Thesis, McGill University, 1997. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=27393.

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The Microwave-Assisted Process (MAP$ sp{ rm TM}$) is an enhanced extraction technology patented by Environment Canada. MAP uses microwaves to rapidly transfer target compounds from one phase to another by selectively heating the phase containing the target compounds. This thesis presents the results of research performed to determine whether the MAP technique can be further developed into a large-scale soil treatment process that overcomes the limitations of conventional remediation technologies.<br>The dielectric properties of several mixtures of acetone and hexane over a temperature range fr

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29

Baize, John. "Forensic Soil Analysis: Characterization of the Sand Fraction." TopSCHOLAR®, 1997. http://digitalcommons.wku.edu/theses/767.

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The purpose of this project was to develop a comprehensive analytical method for the characterization of soil by examining particle size, elemental composition, and percent organic matter in soil, and to determine its forensic applicability. In this study, five soils of varying geological locations were examined including two samples from Kentucky; two samples from Pennsylvania; and one from Washington D C A Gilson sonic sieve shaker was used to separate fractions of soil to determine particle size, and a JEOL scanning electron microscope with a Kevex EDS detector was used to determine elemen

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30

Hardie, Ailsa Ghillaine. "Decontamination of soils by activation with acids and bases." Thesis, Stellenbosch : Stellenbosch University, 2004. http://hdl.handle.net/10019.1/49901.

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Thesis (MSc)--University of Stellenbosch, 2004.<br>ENGLISH ABSTRACT: New, more receptive surfaces can be generated in soils by a partial dissolution of existing, crystalline solids followed by re-precipitation as poorly crystalline colloids with a larger capacity to adsorb ionic and molecular contaminants. This priming process can be carried out by treating the soil with strong acid or base and then neutral ising it again. The aim of this study was to investigate the effectiveness of acid and base treatments in reducing inorganic contaminant availability in different soil types. The fir

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31

Kaisheva, Maria V. "The effect of metals and soil pH on the growth of Rhododendron and other alpine plants in limestone soil." Thesis, University of Edinburgh, 2008. http://hdl.handle.net/1842/2606.

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Rhododendrons are economically important plants in horticulture, and many species are threatened in the wild by habitat degradation. It is therefore doubly important that their nutritional needs should be understood.

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32

Habermann, Birgit. "Ways of knowing of farmers and scientists : tree and soil management in the Ethiopian Highlands." Thesis, University of Sussex, 2014. http://sro.sussex.ac.uk/id/eprint/49648/.

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The Ethiopian Highlands have been studied extensively, hosting a large amount of research for development projects in agriculture and forestry over several decades. The encounters in these projects were also encounters of different ways of knowing that were negotiated by the actors meeting in the space provided by the projects. This research explores these encounters and the social worlds they are embedded in, drawing on actor-oriented approaches as well as theories of narratives and framing. Ways of knowing and citizen epistemologies are taken as a lens to understand the role of identities in

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33

Osei, Benjamin Appiah. "Mineralogy, potassium status, and colloidal chemistry of some Ghanaian soils." Thesis, University of Reading, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.363900.

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34

Cabrera, Julio Cesar. "Mercury characterization in soil collected nearby the Department of Energy Oak Ridge reservation." FIU Digital Commons, 2009. http://digitalcommons.fiu.edu/etd/1956.

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Total mercury (Hg) concentration provides insufficient information to understand Hg behavior in Hg-contaminated soil systems and to seek potential remediation technologies, because the distribution, mobility, bioavailability, and toxicity of Hg are dependent on Hg forms present in soils. The phase association of Hg in soil is investigated to evaluate potential environmental risk through combination of total Hg determination, soil fractionation, and speciation analysis of Hg in a Hg-contaminated DOE site. Besides total Hg concentration analysis, sequential extraction procedures and thermal deso

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35

Kirk, G. J. D. "The dissolution of mineral phosphate in soil." Thesis, University of Oxford, 1985. http://ora.ox.ac.uk/objects/uuid:ccb93b85-1d74-4d8f-8c86-0529bc29a27e.

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The use of cheap, sparingly soluble calcium phosphate fertilizers is increasitgly widespread, particularly in the extensive agriculture systems of the tropics where very high yields are not sought, and phosphate deficiency is a major limitation to crop production. At present there is little quantitative understanding of the factors determining the rates of dissolution of calcium phosphates in soils. Existing quantitative treatments are inadequate, being either empirical or based on oversimplified theory. By developing a precise model of the dissolution process, it should be possible to short-c

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36

Back, Michael Patrick. "Working Backwards: Enhancing Forest Restoration by Reversing Effects of Surface Mine Reclamation on Soil Bulk Density and Soil Chemistry." Kent State University Honors College / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=ksuhonors162014875138985.

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37

Marsden, Rachel Louise. "Rock, soil and soil water chemistry in the Loch Dee catchment, S.W. Scotland : implications for the release of Al." Thesis, University of Stirling, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.386536.

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38

Macpherson, Stuart Alexander. "Interactions between lead and phosphate : soil chemistry, plant uptake and ecological implications." Thesis, University of Bristol, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.294125.

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39

MacPhee, Kirsty Potts. "Hydrochemistry, soil chemistry and critical loads of selected upland moorland catchments, Scotland." Thesis, University of Aberdeen, 1997. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU094086.

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This thesis presents precipitation, streamwater and soil chemistry from three upland catchments in Scotland situated upon granite parent material and receiving different deposition loadings. Marine ions are identified as important components of precipitation and streamwater at the two coastal sites (Bealach and Cardoon) and lesser importance at the inland site (Allt a'Mharcaidh). Similar ratios of Na:Ca:Mg in precipitation and streamwater indicate the importance of catchment hydrology and organic soils in controlling streamwater chemistry. Input/output budgets indicate SO4-S and H+ loss from t

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40

Cantrell, Kirk Jason. "Role of soil organic and carbonic acids in the acidification of forest streams and soils." Diss., Georgia Institute of Technology, 1989. http://hdl.handle.net/1853/25888.

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41

Wimaladasa, G. D. "Some aspects of the chemistry and mineralogy of soil potassium in Sri Lankan acid tea soils and Scottish soils under a range of crops." Thesis, University of Aberdeen, 1989. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU020940.

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The Sri Lankan acid tea soils, collected from six different agro-ecological regions and from the long-term field experiments in St. Coombs, were subjected to a detailed mineralogical investigation with particular reference to the understanding of the chemistry of soil potassium and K fertiliser applications. These extremely weathered soils contained predominantly kaolinite, Al-chlorite, gibbsite and goethite, but K-fixing minerals like smectite and vermiculite were absent. Small quantities of micaceous minerals were only found in the fine and coarse sand fractions of these soils, except in the

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42

Chorom, Mostafa. "Behaviour of alkaline sodic soils and clays as influenced by pH and particle change." Title page, contents and abstract only, 1996. http://web4.library.adelaide.edu.au/theses/09PH/09phc551.pdf.

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Copies of author's previously published articles inserted. Bibliography: leaves 173-196. The objective of this thesis is to investigate the factors affecting swelling and dispersion of alkaline sodic soils containing lime and the ways to manage these soils to improve their physical condition. Studies on pure clay systems are included to understand the fundamental process involved in swelling and dispersion of pure and soil clays.

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43

Dowding, Catherine Elaine. "Morphology, mineralogy and surface chemistry of manganiferous oxisols near Graskop, Mpumalanga Province, South Africa." Thesis, Stellenbosch : University of Stellenbosch, 2004. http://hdl.handle.net/10019.1/16312.

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Thesis (MScAgric)--University of Stellenbosch, 2004.<br>ENGLISH ABSTRACT: In the humid Graskop region of Mpumalanga Province, South Africa, there is an anomalous body of highly weathered black, manganiferous oxisols derived from dolomite. With Mn contents as high as 17%, potential large-scale Mn release is an environmental concern under current, acid generating, forestry practices. This study aims at establishing the factors which may affect the stability of the manganiferous oxisols of Graskop and in the process, investigating some of the morphological, mineralogical and chemical proper

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44

Clark, Benjamin Robert. "Studies on the chemistry of Australian microbes /." [St. Lucia, Qld.], 2005. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe.pdf.

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45

Kim, Jong-Soo. "Characteristics of humic substances and their removal behavior in water treatment." Diss., Georgia Institute of Technology, 1988. http://hdl.handle.net/1853/21469.

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46

Amin, Mohammad. "Studies on the measurement and behaviour of nitrogen in soil." Thesis, University of Glasgow, 1995. http://theses.gla.ac.uk/6267/.

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This study of the measurement and behaviour of nitrogen in soil is split into three main parts: 1) An investigation of the Kjeldahl digestion method for measuring total nitrogen in soil and plant materials. 2) A study of the effect of air drying, temperature and repeated ammonium application on nitrification rates and 3) An investigation of ammonium contamination at a former nylon factory site. The investigation of the Kjeldahl digestion method was made by comparing measured values of total nitrogen using a standard Kjeldahl digestion method and salicylic acid modification digestion method. Fo

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47

Deknatel, William Brockway. "A theoretical model of component activities in magnesian calcites." Diss., The University of Arizona, 1991. http://hdl.handle.net/10150/185369.

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Calcium carbonate, calcite, and magnesium carbonate, magnesite, form a series of solid solutions with compositions ranging 0 to 50% magnesite which is dolomite the end member of the series. The calcite magnesite solid solutions are called magnesian calcites (Mg-calcites). Mg-calcites exist in nature, in soils, in marine skeletal materials, in some marine cements, etc., and their existence has been associated with the supersaturation of calcite in sea water and the soil solution of some calcareous soils. They are clearly more soluble than calcite, but their chemical properties has not been defi

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48

Hettiarachchi, L. S. K. "Some aspects of the chemistry and mineralogy of soil magnesium in relation to Camellia growth on Sri Lankan acid tea soils." Thesis, University of Aberdeen, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.357992.

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Preliminary effects of application of dolomitic limestone on growth and nutrient status of two different <i>Camellia sinensis</i> L. (tea) species, and on soil status in two Sri Lankan acid soils were investigated. The concentration of Mg in the leaves of TRI 206 species, grown under low-country climatic conditions, increased but Mg concentration was unaffected in CY9 species, grown under up-country climatic conditions. Dolomitic limestone had no effect on the yield of bud, and first and second leaves which are harvested for the production of made-tea. Ten representative profiles of Sri Lankan

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49

Santamaria-Fernandez, Rebeca. "New strategies to determine the distribution of trace elements in soils and sediments." Thesis, University of Plymouth, 2004. http://hdl.handle.net/10026.1/2084.

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Sequential chemical extraction to fractionate metals in soils and sediments into different groups reflecting their "leachability" has been widely employed to determine distribution of metals in different physico-chemical phases. A large number of sequential extraction schemes have been reported, most of them modifications of Tessier's extraction protocol. Although this method has been widely accepted, it is important to highlight that sequential extraction procedures are often tedious and time consuming and that they also suffer from a number of limitations, such as the problem of ac

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50

Lütkenhaus, Davidson. "Engineering understanding of cleaning : effect of chemistry and mechanical forces on soil removal." Thesis, University of Birmingham, 2017. http://etheses.bham.ac.uk//id/eprint/7929/.

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The cleaning of food-based soils is highly relevant in domestic and industrial environments due to the costs associated with these operations as well as the significant consumption of time, water, and energy. Understanding the relationship between chemical and mechanical forces required to clean a surface is a critical step towards optimizing these processes. A complex twophase polymerized grease was developed and characterized with respect to its morphology, component distribution, and chemical composition. A thorough evaluation and physicochemical characterization of the cleaning process of

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