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Relevant bibliographies by topics / Environment geochemistry / Dissertations / Theses

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Dissertations / Theses on the topic 'Environment geochemistry'

Author: Grafiati

Published: 4 June 2021

Last updated: 4 February 2022

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1

Boswell, Stephen Mark. "Zirconium and hafnium in the aquatic environment." Thesis, University of Cambridge, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.278402.

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2

Bouda, S. "Mossbauer effect and geochemical study of solution-mineralization in surficial environment of south-west England." Thesis, University of Exeter, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.355132.

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3

Debnath, Sudeep. "Surface/Geochemistry of Iron and Manganese Oxide Nano-Materials in the Environment." Diss., Temple University Libraries, 2009. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/30879.

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Chemistry<br>Ph.D.<br>Nanomaterials possess physical and chemical properties that may benefit medicine, catalysis, and environmental remediation. Apart from understanding the structure of nanomaterials, significant amount of research has focused on understanding the structural properties of nanoparticles that lead to their unique reactivity. Ferric hydroxides are important mineral components and the subject of much scientific research in environmental and soil sciences because of their ubiquity in soil, ground water and aquatic sediments Iron oxide nanoparticles found in the environment exhibi

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4

Middleton, Gideon Paul Grevatt. "Variations in the carbon isotope ratio of phytoplankton and dissolved inorganic carbon in the marine environment." Thesis, Bangor University, 1997. https://research.bangor.ac.uk/portal/en/theses/variations-in-the-carbon-isotope-ratio-of-phytoplankton-and-dissolved-inorganic-carbon-in-the-marine-environment(b0e1349d-7de6-46f5-ab2a-cc4b939b8b0c).html.

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The two main aims of this study were; (i) to determine the equilibrium fractionation effects of the stable isotopes of carbon between dissolved molecular CO2 (C02(aq) ) and bicarbonate (HC03-) (Eb/a ) and HC03 - and carbonate (CO/-) (Eclb ) in sea water, and (ii) to investigate the relationship between the isotopic composition of phytoplankton (013CpOC) and their photosynthetic source of inorganic carbon. To determine Eb/a and Eclb in sea water (S = -34) experiments were conducted at different pHs and two temperatures (SOC and 20°C). The measured values of Eb/a (SOC = 11.67 ± 0.34 %0 and 20°C

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5

Shaddick, Lindsay Raymond, University of Western Sydney, of Science Technology and Environment College, and of Science Food and Horticulture School. "The geochemistry of chromium in the supergene environment : chromium (VI) and related species." THESIS_CSTE_SFH_Shaddick_ L .xml, 2003. http://handle.uws.edu.au:8081/1959.7/474.

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A description of the role of chromium in aqueous solution with respect to its geochemistry and the formation of secondary chromium minerals in the supergene environment is developed. Secondary chromium minerals are relatively rare in Nature and apart from the lead chromate crocoite which is by far the most common and also the most keenly sought after by collectors due its great beauty, little is known of related species. In attempt to redress this situation the initial aim of this study is to present an up-to-date list and description of secondary chromium minerals. It has long been recognised

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6

Shaddick, Lindsay Raymond. "The geochemistry of chromium in the supergene environment : chromium (VI) and related species /." View thesis, 2003. http://library.uws.edu.au/adt-NUWS/public/adt-NUWS20050921.140829/index.html.

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7

Mc, Keown Stephen. "Geochemistry and amelioration of a sulphur contaminated environment near Somerset West, South Africa." Master's thesis, University of Cape Town, 2000. http://hdl.handle.net/11427/4211.

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Bibliography: leaves 100-104.<br>The key objectives of this study are, firstly, to determine the extent and effects of the S contamination and secondly, to determine an effective means of ameliorating the site.

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8

Hobson, Chad. "Exploring tungsten in the environment: geochemical study of an emerging contaminant." Thesis, Kansas State University, 2013. http://hdl.handle.net/2097/16991.

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Master of Science<br>Department of Geology<br>Saugata Datta<br>Tungsten (W) has become an element of greater concern in recent years. Investigations by the Centers for Disease Control implicated W as a possible link to several cases of childhood acute lymphatic leukemia (ALL) clusters in the western United States. In Fallon NV, 17 cases of ALL were reported from 1997-2001. Previously, it was difficult to attain knowledge about the geochemical behavior of W due to low concentrations and difficulties in detection in natural environments. Modern analytical techniques allow for a greater range of

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9

Singer, David Marc. "Uranium and strontium (bio)geochemistry : limits on uranium and strontium mobility in the environment /." May be available electronically:, 2008. http://proquest.umi.com/login?COPT=REJTPTU1MTUmSU5UPTAmVkVSPTI=&clientId=12498.

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10

Bergen, Laura. "Uranium in the environment: a characterization and comparison of uranium mobility in ancient and modern sediments." American Mineralogist, 2012. http://hdl.handle.net/1993/14431.

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The behavior of U in near surface sedimentary environments has changed throughout geologic time. There is a marked shift in U (IV) mineral stability and deposit style at approximately 2200 Ma due to changes in the concentration of O in the atmosphere. For example, prior to 2200 Ma, fluvial U deposits could form and U(IV) were stable in surface and near-surface environments. In modern, anthropogenic sedimentary systems such as U tailings, U (IV) minerals are not stable and readily oxidize to U (VI) minerals. In addition, U is much more mobile in modern sediments relative sediments that were

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11

Radoman-Shaw, Brandon G. "Exposure of Basaltic Materials to Venus Surface Conditions using the Glenn Extreme Environment Rig (GEER)." Case Western Reserve University School of Graduate Studies / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=case1557312457308105.

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12

Grattan, John Patrick. "The impact of Icelandic volcanic eruptions upon the ancient settlement and environment of northern and western Britain." Thesis, University of Sheffield, 1995. http://etheses.whiterose.ac.uk/14822/.

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13

Adelman, Jessica. "Mineral interactions in a gold mining environment: change in oxidation rate of stibnite as affected by the addition of varying amounts of pyrite in an oxygenated flow through system." Thesis, McGill University, 2010. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=92390.

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It is thought that a significant mechanism of stibnite (Sb2S3) oxidation in mine wastes is through contact with a mineral of greater rest potential (whereby the outer valence shell electrons operate at a higher energy level), such as pyrite (FeS2). The goal of this research is to determine if the oxidation of stibnite in an oxygenated flow through system was increased through contact with minerals of greater rest potential such as pyrite and arsenopyrite (FeAsS) and whether this electro-chemical reaction was affected by various ratios of stibnite to pyrite (or arsenopyrite) and slightly acidic

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14

Hoffman, Mary Kathryn. "Physiochemical behaviors of radiocesium in a calciferous, post-detonation environment." University of Cincinnati / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1584015906269554.

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15

Souza, Ariadne Marra de. "Caracterização ambiental da bacia hidrogáfica do Rio São Domingos a partir da análise geoquímica e isotópica Pb/Pb." Universidade do Estado do Rio de Janeiro, 2011. http://www.bdtd.uerj.br/tde_busca/arquivo.php?codArquivo=2654.

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Fundação de Amparo à Pesquisa do Estado do Rio de Janeiro<br>A bacia hidrográfica do rio São Domingos constitui uma das sub-bacias do rio Muriaé pertencente ao sistema Paraíba do Sul e, tem seus limites coincidentes com os limites do município de São José de Ubá, sendo este o segundo maior produtor de tomate do estado do Rio de Janeiro, com sua principal fonte econômica baseada na agropecuária. Este tipo de atividade resulta em utilização de produtos químicos nas lavouras e juntamente a ocupação inadequada resulta em modificação das paisagens e da mata nativa, resultando em diversos tipos de i

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16

Szucs, Andrea. "Geochemical Landscape Analysis for the Risk Assessment of Acid Mine Drainage in a Wetland Environment." Doctoral thesis, Uppsala universitet, Institutionen för geovetenskaper, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-6992.

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Attenuation of acid mine drainage (AMD) metals originating from abandoned mines and waste rock dumps is investigated in this thesis at Slättberg in central Sweden, where acid mine leachate has been discharging for over 70 years into the receiving wetland stream and mire. Risk assessment of AMD and related polluted lands requires a holistic approach that is able to study the complexity of pollution emissions and impacted landscapes. In this thesis a link between geochemical contaminant fate modelling and landscape analysis is presented for AMD risk assessment. A simple geochemical landscape ana

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17

Khadka, Mitra B. "Variation in Trace Metal Concentrations in A Fluvial Environment, Ottawa River, Toledo, Ohio." Bowling Green State University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1281396632.

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18

Tortorello, Rebecca Diane. "Application of Uranium Isotopes as a Temporal and Spatial Tracer of Nuclear Contamination in the Environment." Miami University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=miami1354977526.

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19

Rapopo, Mafusi. "Petrogenesis of the syntectonic Matok Pluton in the Limpopo Belt (South Africa) and its implications of the geodynamic environment." Thesis, Stellenbosch : Stellenbosch University, 2011. http://hdl.handle.net/10019.1/17993.

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Thesis (MSc)--Stellenbosch University, 2011.<br>ENGLISH ABSTRACT: The ~2.67 Ga Matok pluton comprises calc‐alkaline pyroxene (px)‐bearing and px‐free granitoids. The pluton was constructed by means of two episodes of intrusion each of which had co‐magmatic px‐bearing and px‐free granitoid groups. All the granitoid groups (px‐bearing and px‐free) are characterised by non‐porphyritic and porphyritic varieties. The phenocrysts in both episodes of intrusion are plagioclase ± alkali feldspar and are aligned parallel to the trend of the Limpopo Belt, attesting to a syntectonic emplacement. The time

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20

Lundberg, Paula. "Geochemical processes in mine waste subjected to a changing chemical environment: Fe speciation in leachate water from column experiments." Thesis, Luleå tekniska universitet, Geovetenskap och miljöteknik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-65380.

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Oxidation of sulfidic mine waste is of significant environmental concern due to the consequent formation of acid rock drainage (ARD), deteriorating the water quality of natural water systems. Iron (Fe) and sulfur (S) are two major redox elements involved in these reactions and typically the major redox-sensitive elements (whose solubility, speciation, and mobility are affected by pH and Eh) in water affected by ARD. Measurements of Fe and S species concentrations may reveal valuable information about geochemical processes in mine waste but are typically included when analyzing the chemical com

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21

Choa, Omar. "A geochemical history of Tabon Cave (Palawan, Philippines) : environment, climate, and early modern humans in the Philippine archipelago." Thesis, Paris, Muséum national d'histoire naturelle, 2018. http://www.theses.fr/2018MNHN0002/document.

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La grotte de Tabon (Palawan, Philippines) est un site préhistorique majeur en Asie du Sud-Est. Elle a livré des fossiles d’Homo sapiens datant du Pléistocène supérieur, rares dans la région. Pourtant, son histoire demeure mal connue : d’importantes altérations physiques et chimiques compliquent la lecture de sa stratigraphie, tandis que des objets archéologiques sans contexte clair entravent l’élaboration d’une chronologie fiable. Cette étude jette un nouveau regard sur la grotte de Tabon à travers une approche pluridisciplinaire des sciences de la Terre. Elle explore notamment l’en

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22

Hendricks, Mogammad Yaaseen. "Provenance and depositional environments of early cretaceous sediments in the Bredasdorp Sub-basin, offshore South Africa: an integrated approach." University of the Western Cape, 2020. http://hdl.handle.net/11394/7596.

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>Magister Scientiae - MSc<br>Southern offshore basins of South Africa are well known as potential provinces of hydrocarbon exploration and production. The complex nature of the Bredasdorp sub-basin’s syn-rift architecture (transform fault system) can have adverse effects on reservoir distribution due to periodic local and regional uplift of horsts and grabens. This present investigation focusses on an integrated approach of the 1AT1-V horizon or early Cretaceous sediments in the Bredasdorp sub-basin to identify the depositional environment and provenance of these sediments as well as their rol

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23

Boop, Liana Marie. "Characterization of the Depositional Environment of Phreatic Overgrowths on Speleothems in the Littoral Caves of Mallorca (Spain): a Physical, Geochemical, and Stable Isotopic Study." Scholar Commons, 2014. https://scholarcommons.usf.edu/etd/5187.

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Phreatic overgrowths on speleothems (POS) are one of many sea-level proxies available to Quaternary geologists in Mallorca; these carbonate encrustations form at the air-water interface in cave passages flooded with brackish water. POS are ideal for reconstruction of western Mediterranean sea level because they are widespread in Mallorca's caves, can be precisely dated by U-series methods, constrain sea-level stands to sub-meter elevation, and are well preserved and accessible in the subterranean environment. This research investigates the POS depositional environment, which is relatively unde

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24

Gurjazkaite, Karolina. "Vegetation history and human-environment interactions through the late Holocene in Konar Sandal, Kerman, SE Iran." Thesis, Linköpings universitet, Institutionen för tema, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-140094.

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The Jiroft valley, in southeastern Iran, was an important agricultural centre since the Early Bronze Age (3rd millennium BCE). The valley is characterized by harsh environmental settings: hot climate with poor rainfall. However, more optimal conditions may have prevailed earlier that supported ancient settlements. A 250-cm sediment core was retrieved from a peat-land at Konar Sandal, a major archaeological find attributed to Jiroft culture. The palynological data from this core was combined with geochemical and sedimentological proxies aimed at establishing the human-environment interactions i

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25

Hobson, Andrew James. "Geochemistry of vanadium in hyperalkaline environments." Thesis, University of Leeds, 2017. http://etheses.whiterose.ac.uk/20280/.

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Hyperalkaline environments associated with leaching of industrial wastes such as steel slags can have a number of deleterious effects on their local environment including rapid carbonate precipitation and mobilisation of potentially toxic trace metals. Steel slag is the primary byproduct of steelmaking and is enriched in trace elements such as Al, Cr and V. V is of particular concern due to its high concentration in steel slag, its potential toxicity and its mobility in high pH leachate as the vanadate oxyanion (VO43-). This study used aerated and air-excluded batch leaching tests, aerated lea

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26

Naudin, Aline. "Potentiel de la minéralogie magnétique en tant que marqueur des variations environnementales enregistrées par les dépôts tourbeux : Application au marais de la Trézence (17)." Phd thesis, Université de La Rochelle, 2011. http://tel.archives-ouvertes.fr/tel-00703444.

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L'utilisation de la minéralogie magnétique en tant que marqueur des changements environnementaux dans les tourbières a été envisagé dès 1986 (Richardson, 1986) mais n'a pas été réellement prise au sérieux jusque très récemment (Hutchinson and Armitage, 2009; Mighall et al., 2009). Notre étude se proposait d'abord de déterminer quelles techniques sont les plus adaptées à des mesures sur tourbe (acquisition progressive d'ARI et ARA associées à leurs désaimantations AF) et comment les mettre en place afin de garantir la qualité des mesures malgré les nombreuses contraintes : faiblesse du signal,

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27

Clark, Kathryn Elizabeth. "Patterns and drivers of riverine particulate organic carbon transport in an Andean valley." Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:caabfe4f-7499-4789-9bdc-e1dc708999a0.

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Physical erosion can mobilise particulate organic carbon (POC) from vegetation and soil, representing an export of primary productivity from ecosystems, and a lateral transfer of carbon recently-derived from the atmosphere. These carbon transfers are thought to be enhanced in mountain forests where erosion rates are high. However, the rates and controls on POC transfer remain poorly constrained, as does the impact of POC export on carbon cycling at regional and global scales. This thesis takes an interdisciplinary approach to address this issue, using remote sensing, river geochemistry, river

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28

Pereira, Jose Carlos. "Geoquimica de solos e sedimentos e impacto antropico por elementos-traço, na microbacia do corrego da Fazenda Santa Candida, area periurbana de Campinas (SP)." [s.n.], 2005. http://repositorio.unicamp.br/jspui/handle/REPOSIP/287685.

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Orientador: Wanilson Luiz Silva<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Geociencias<br>Made available in DSpace on 2018-08-05T12:29:41Z (GMT). No. of bitstreams: 1 Pereira_JoseCarlos_M.pdf: 12536730 bytes, checksum: 219b97f0b56663afc98dcdd3d64db63c (MD5) Previous issue date: 2005<br>Resumo: A caracterização ambiental da microbacia do córrego da fazenda Santa Cândida, manancial periurbano de Campinas (SP), foi realizada a partir da classificação de solos e geoquímica multi-elementar (Ag, AI, As, Sa, Se, Si, Ca, Cd, Ce, Co, Cr, Cs, Cu, Fe, Ga, Ge, Hf, Hg, In

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29

Scheffer, Clemens von. "Holocene human impact, climate and environment in the northern Central Alps : a geochemical approach on mountain peatlands." Thesis, Toulouse, INPT, 2019. http://www.theses.fr/2019INPT0057.

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Les Alpes européennes ont connu plusieurs phases de colonisation humaine. Cependant, l'interaction entre climat et impacts humains sur l'environnement dans le passé n'est pas encore totalement comprise dans cette région de haute montagne. Il existe notamment un manque de connaissances sur la chronologie et l'ampleur des impacts humains dans les Alpes centrales du nord (ACN) pendant l'Holocène, que cette étude comble en utilisant des analyses géochimiques, de palynologiques et de datation radiocarbone comparées avec des données archéologiques et historiques régionales. Des tourbières dans trois

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30

Dredge, Jonathan. "Aerosol contributions to speleothem geochemistry." Thesis, University of Birmingham, 2014. http://etheses.bham.ac.uk//id/eprint/5136/.

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There is developing interest in cave aerosols due to the increasing awareness of their impacts on the cave environment and speleothems. This study presents the first multidisciplinary investigation into cave aerosols and their contribution to speleothem geochemistry. Modern monitoring of suspended aerosol concentrations, CO2 and temperature in Gough’s Cave, Cheddar Gorge have presented a strong relationship with cave ventilation processes. Temporal variations of aerosol levels have demonstrated the ability of aerosol monitoring to record seasonal ventilation shifts, beyond anthropogenic influe

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31

Naylor, Christopher Charles. "Early oxidative transformation of chlorophyll in contemporary environments." Thesis, University of York, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.361987.

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32

Miller, Sarah Jane. "Geochemistry of ferruginous clogging of Karoo wells." Master's thesis, University of Cape Town, 2000. http://hdl.handle.net/11427/4213.

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Summary in English.<br>Includes bibliographical references.<br>The main source of potable water in the Karoo is groundwater and thus any problems resulting from the abstraction of water or from diffifulties in abstractions of water are important. The iron clogging of screens, pumps and filter packs in supply wells is a worldwide problem and the consequences can be severe, leading to costly and harsh rehabilitation measures or even loss of the well. A study was undertaken in order to determine the chemistry and morphology of the precipitates found in relation to the water chemistry, in several

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33

Szenay, Brian Craig. "Modeling Potential Chemical Environments: Implications for Astrobiology." Scholar Commons, 2013. http://scholarcommons.usf.edu/etd/4847.

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Modeling chemical environments is an important step to understanding the diversity of prebiotic systems that may have formed on the early earth or potentially can occur on other worlds. By using the modern Earth as a test case, these models predict scenarios with systems more conducive to the formation of the organic molecules that are important to life. Here we use the equilibrium thermodynamic modeling program HSC Chem to investigate prebiotic environments. This program uses the raw material that the user inputs into the system in order to calculate the change in amounts of chemical species

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34

Smith, Jason Alistair Christian. "The marine environmental geochemistry of the southern Baltic Sea." Thesis, University of Edinburgh, 1999. http://hdl.handle.net/1842/16931.

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The initial focus of this research sought to investigate the marine geochemistry of radium and barium in order to elucidate upon the processes governing circulation patterns and residence times in the southern Baltic Sea. The project has since developed and transformed into a detailed study of the spatial and temporal distribution of a select group of metals, and in some respects pollutants, in the region north of the river Oder where it discharges into the Baltic Sea. A transect of progressively deepening water depths, thought to trace the major outflow of the river Oder into a depositional b

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35

Harraway, Trevor John. "Chemical characterisation of landfill leachate and its potential mobility through the Cape Flats sand." Thesis, University of Cape Town, 1996. http://hdl.handle.net/11427/26218.

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Chowdhury, Md Abu Raihan. "Removal of Select Chlorinated Hydrocarbons by Nanoscale Zero-valent Iron Supported on Powdered Activated Charcoal." Wright State University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=wright1496150130687849.

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Ficken, Katherine J. "Lipid and sulphur geochemistry of recent sediments from oxic and anoxic environments." Thesis, University of Newcastle Upon Tyne, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.384952.

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38

Huebner, Ralf. "Sediment geochemistry : a case study approach." Thesis, Bournemouth University, 2009. http://eprints.bournemouth.ac.uk/13139/.

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The geochemistry of sediments is a very wide field and several important aspects must be taken into account, including, but not limited to, various methodological questions, the analysis of distribution patterns, determination of origins and the assessment of risks. Therefore, this research project adapted a case study approach and analysed several important aspects of contamination in sediments at a time. In case study 1, the distribution of metals in the sediments was analysed in Bigge and Olpe, two small and fast running watercourses in Germany. The metal/metalloid concentrations showed ver

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Hartland, Adam. "Colloidal geochemistry of speleothem-forming groundwaters." Thesis, University of Birmingham, 2011. http://etheses.bham.ac.uk//id/eprint/1659/.

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Natural aquatic colloids (solids with dimensions between 1 nm and 1 micron) were studied in cave waters that feed secondary carbonates [speleothems]. Results show that during hydrologically quiescent periods, trace metal (Tr) binding (e.g. Cu, Ni, Co) is dominated by humic-like, natural organic matter (NOM), with the smallest NOM-Tr complexes (≤1 to ca. 4 nm diameter) being the least labile at high pH (>pH 10). Partitioning of NOM:Tr between solution and crystal occurs minimally for the strongest complexes, providing a measure of NOM adsorption. Rapid fluxes of coarse (>100 nm) soil organic ma

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MacGregor, Robert A. "The geochemistry of selenium in sedimentary environments : examples from the UK and Jordan." Thesis, University of Reading, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.363858.

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41

Lax, Kaj. "Environmental applications of biogeochemical data from Geological Survey of Sweden." Licentiate thesis, Luleå : Luleå University of Technology, 2005. http://epubl.luth.se/1402-1757/2005/95.

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42

Zhao, Linduo. "Iron redox process in clay minerals and its environmental significance." Miami University / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=miami1438388284.

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Angst, Delphine. "Successeurs des dinosaures ? Paléobiologie et paléoécologie d’un oiseau géant terrestre du Paléogène." Thesis, Lyon 1, 2014. http://www.theses.fr/2014LYO10247.

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Les Gastornithidae sont des oiseaux géants terrestres présents dans le Tertiaire (Paléocène- Eocène) d'Europe, d'Amérique du Nord et d'Asie. Bien que ces oiseaux soient connus depuis le 19ème siècle, leur écologie et les environnements dans lesquels ils vivaient sont encore très mal connus. Cette thèse propose donc d'apporter des réponses sur ces deux points afin de mieux comprendre ces oiseaux grâce à une approche pluridisciplinaire, combinant des études de morphologie-fonctionnelle, de géochimie isotopique, et de paléontologie. Nous avons pu déterminer que cet oiseau de deux mètres de haut d

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Yafa, Charun. "Accurate analysis and environmental geochemistry of inorganic elements in peat bogs." Thesis, University of Edinburgh, 2004. http://hdl.handle.net/1842/11632.

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The work described in this thesis is primarily concerned with (i) the development of analytical methods for the determination of inorganic elements in peat, (ii) the production and analysis of a certified peat reference material, and (iii) the application of methods and procedures to the generation and interpretation of elemental profiles in cores from the largest ombrotrophic peat bog in Scotland. The effects of sample preparation on the determination of inorganic elements in peak samples were thoroughly investigated. The analytical methods and quality assurance procedures developed using the

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45

Fox-Powell, Mark George. "The habitability of aqueous environments on Mars." Thesis, University of Edinburgh, 2017. http://hdl.handle.net/1842/25442.

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It is clear that a planet's ability to support life is intimately associated with its physical evolution, but many aspects of this link have not been resolved. For example, differing geologic histories have the potential to drive large-scale differences in the chemistry of planets’ waters, with unknown implications for habitability. In this thesis, I link the geochemical evolution of Mars to the habitability of its associated evaporitic or brine environments, which have been widespread throughout the planet's history. Their habitability is compared with the Earth system, where a chloride-domin

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Miller, Kelly Elizabeth. "The R chondrite record of volatile-rich environments in the early solar system." Thesis, The University of Arizona, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10150284.

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<p> Chondritic meteorites are undifferentiated fragments of asteroids that contain the oldest solids formed in our Solar System. Their primitive, solar-like chemical compositions indicate that they experienced very little processing following accretion to their parent bodies. As such, they retain the best records of chemical and physical processes active in the protoplanetary disk during planet formation. Chondritic meteorites are depleted relative to the sun in volatile elements such as S and O. In addition to being important components of organic material, these elements exert a strong influ

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Brydon, Richard. "TRACING MAGAMTIC PROCESS IN PLUTONIC ENVIRONMENTS: INSIGHT FROM APATITE AND RIFT-RELATED GRANITES." Miami University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=miami1547117312990626.

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Makhathini, S. C. "Environmental consequences associated with ash-stabilisation of organic sludges from the synthol process." Master's thesis, University of Cape Town, 2002. http://hdl.handle.net/11427/7403.

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Includes bibliographical references.<br>Worldwide increases in environmental awareness have led to the development of new innovative technologies aimed at site remediation and hazardous waste treatment. Solidification/Stabilisation (S/S) is one of such technologies and it has emerged as an environmentally acceptable treatment option for hazardous waste. Initially applied to inorganic wastes, S/S is now being investigated for the treatment of organic wastes and sludges. Challenges facing this venture into the SIS of organic wastes include the lack of technical information on waste-binder intera

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Lanyon, Ruth. "Arsenic dispersion associated with the Barbrook gold mine in the Mpumalanga Province of South Africa." Master's thesis, University of Cape Town, 1997. http://hdl.handle.net/11427/22169.

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Bibliography: pages 123-137.<br>Arseniferous sulphide-hosted gold deposits associated with the Barberton greenstone belt, located in the Mpumalanga province of South Africa, have been mined on various scales since late last century. The Barbrook mine is located close to the Swaziland border in an area of the Barberton mountainlands which forms part of the Kaap subcatchment of the Crocodile River. Scattered small communities depend on local streams and boreholes in the area for drinking and irrigation water. Hence, the prime motivation for this study was the potential risk to human health assoc

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Ceruti, Portia Odessyl. "Crushed rock and clay amelioration of a nutrient decifient, sandy soil of Maputaland." Master's thesis, University of Cape Town, 1999. http://hdl.handle.net/11427/9881.

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Bibliography: leaves 57-62.<br>Various studies have suggested the possibility that food derived through subsistence agriculture in the Mseleni region of Maputaland contributes to malnutrition within the local community, particularfy within the high proportion of the population which suffers from a severe, disabling form of osteoarthritis. This study was conducted to determine if the application of local crushed rock or black clay to these nutrient deficient, sandy soils would increase available nutrient concentrations and improve the growth of plants in the ameliorated soil.

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