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Dissertations / Theses on the topic 'Sulphur dioxyde'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Foucart, Brice. "Observation et modélisation de la Formation de Nouvelles Particules (FNP) au sein du panache volcanique du Piton de la Fournaise." Thesis, La Réunion, 2019. http://www.theses.fr/2019LARE0014/document.

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L'activité volcanique peut représenter une source naturelle de pollution atmosphérique. Cette pollution peut engendrer une dégradation de la qualité de l'air, affecter la santé humaine et perturber la sécurité aérienne. Le Piton de la Fournaise à La Réunion est l'un des volcans basaltique les plus actifs au monde. Ses éruptions sporadiques génèrent des panaches volcaniques essentiellement constitués de gaz et de nanoparticules qui se propagent dans l'atmosphère. En journée, la formation d'oxydants (photolyse) permet d'oxyder une partie du dioxyde de soufre en acide sulfurique. Les molécules d'

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2

Atkin, Ian. "Improvement of sulphur dioxide yield from the sulphuric acid thermal decomposition process by membrane separation." Thesis, University of Sheffield, 2010. http://etheses.whiterose.ac.uk/14532/.

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This work investigates the feasibility of applying high temperature oxygen separation to the sulphuric acid decomposition process, a step used in large scale hydrogen production processes currently under development. Porous and dense membranes are both considered. Equilibrium calculations show yttria-stabilised zirconia (YSZ), combined with platinum electrodes, to be a candidate membrane. Process simulations show the potential sulphur dioxide yield increases that could be achieved through the use of a high temperature oxygen separation membrane in two different configurations. Bespoke experime

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3

Fu, Man On. "Novel adsorbents for sulphur dioxide removal /." View abstract or full-text, 2009. http://library.ust.hk/cgi/db/thesis.pl?EVNG%202009%20FU.

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4

Thompson, Linda Helen. "Reactions in liquid sulphur dioxide based media." Thesis, University of Nottingham, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.335469.

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5

Buckenham, A. H. "Effects of sulphur dioxide on stomatal functioning." Thesis, University of Nottingham, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.378436.

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6

Zaft, Paul E. "A microcomputer compensated sensor for sulphur dioxide." Thesis, Imperial College London, 1990. http://hdl.handle.net/10044/1/46626.

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7

Harman, Neil F. "Aspects of the lithium-sulphur dioxide cell." Thesis, Loughborough University, 1986. https://dspace.lboro.ac.uk/2134/33142.

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An open electrolytic cell has been designed and constructed for use in a dry environment. This was used to investigate the passivation processes concerned with both the lithium and the carbon (SO2) electrodes. A.c. impedance techniques have been used in both two and three terminal cell systems in order to study the kinetics of the electrode processes. Effects of temperature, state-of-charge and reverse cell operation have been studied. Computer simulations were made of the growth of crystals on a flat (Li) surface and the resulting growth transients connecting current and time were derived. Th

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8

Rao, Sumitrananda N. R. "Novel adsorbents using metal complexes." Thesis, Georgia Institute of Technology, 1993. http://hdl.handle.net/1853/10200.

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9

Mulligan, David John. "Reduction of sulphur dioxide over transition metal sulphides." Thesis, McGill University, 1988. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=61916.

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10

Famulari, Daniela. "Surface-atmosphere exchange of ammonia and sulphur dioxide." Thesis, University of Edinburgh, 2005. http://hdl.handle.net/1842/10883.

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Field measurements of the surface – atmosphere exchange of SO<sub>2</sub> and NH<sub>3</sub> have been made using two very different micrometeorological methods, a long term averaging method based on flux-gradient principles and an eddy covariance method, using a tunable diode laser fast response gas analysis system. The field data are then applied in surface-atmosphere models to calculate deposition of pollutant gases at the regional scale. The Time Averaged Gradient system (TAG) has been developed following a prototype implemented during a pilot study in 1998. The main goal of the TAG is to

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11

Harrison, K. A. "The fate of sulphur dioxide in meat products." Thesis, University of Leeds, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.233204.

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12

Henry, William John. "Annelation and pyrolysis reactions of 3-thiabicyclo[3.2.0]heptane-3,3-dioxide ring systems." Thesis, University of Edinburgh, 1987. http://hdl.handle.net/1842/15006.

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13

Mulligan, David John. "Reduction of sulphur dioxide over supported molybdenum sulphide catalysts." Thesis, McGill University, 1992. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=39497.

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The reduction of sulphur dioxide with methane using various supported molybdenum catalysts has been studied. Catalysts were prepared using either alumina or a silica-alumina support. For the alumina supported catalysts, the molybdenum loadings of 5, 10 or 15% were used. These catalysts were sulphided using 12% H$ sb2$S in argon or a mixture of SO$ sb2$ and CH$ sb4$ in argon. The 15% $ rm Mo/Al sb2O sb3$ catalyst sulphided with H$ sb2$S was at least 1.5 times as active as the other alumina supported catalysts and had the highest yields of elemental sulphur and CO$ sb2$ and was 10 times as activ

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14

Coetzee, Morné Pieter. "Upscaling of a sulphur dioxide depolarized electrolyzer / Coetzee, M.P." Thesis, North-West University, 2012. http://hdl.handle.net/10394/7001.

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In the last couple of years there has been a great need for finding alternative, cleaner burning fuel sources. This search has led to the development of various hydrogen technologies. The reason for this is that when burnt, hydrogen gas only forms water and oxygen as products. One of the methods used in the production of hydrogen gas is that of the electrolysis of sulphur dioxide which is facilitated by a sulphur dioxide depolarized electrolyzer. The electrolysis of sulphur dioxide has the advantage of requiring lower cell voltages in the electrolysis process when compared to the electrolysis

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15

Graham, N. K. "Metal chemistry in non-aqueous solutions containing sulphur dioxide." Thesis, University of Leeds, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.373849.

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16

Phillips, Samantha Justine. "The ability of bryophytes to withstand sulphur dioxide pollution." Thesis, University of Sheffield, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.284357.

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17

Barrelet, Timothée. "Norway spruce as an environmental archive for sulphur dioxide /." [S.l.] : [s.n.], 2006. http://www.zb.unibe.ch/download/eldiss/05barrelet_t.pdf.

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18

Hong, Pui-Kwan Andrew Hoffmann Michael R. Hoffmann Michael R. "Catalytic oxidation of sulphur dioxide by heterogeneous cobalt-phthalocyanine /." Diss., Pasadena, Calif. : California Institute of Technology, 1988. http://resolver.caltech.edu/CaltechETD:etd-11082007-080528.

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19

Shaw, Andrew Charles. "The simultaneous solubilty of sulphur dioxide and oxygen in water for the hybrid sulphur thermochemical cycle." Thesis, University of Sheffield, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.489067.

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Anthropogenic greenhouse gas emissions and rising oil prices call for a sustainable transportable energy source. Hydrogen is a promising replacement for carbon based fuels in vehicles. The HyS cycle, proposed by the Westinghouse Corporation, is a route to hydrogen production on a scale large enough to satisfy the requirements of the transport industry. The process is a hybrid thermochemical cycle based on the decomposition of sulphuric acid.

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20

Gould, R. P. "The effects of gaseous sulphur dioxide and nitrogen dioxide on carbon allocation in plants." Thesis, Lancaster University, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.377896.

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21

Renner, Christine Joan. "Interactive effects of sulphur dioxide, nitrogen dioxide and the winter environment on Lolium perenne." Thesis, University of Newcastle Upon Tyne, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.254029.

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22

Hlabano-Moyo, Bongibethu Msekeli. "Separation of SO2/O2 using membrane technology / Bongibethu Msekeli Hlabano-Moyo." Thesis, North-West University, 2013. http://hdl.handle.net/10394/9447.

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The Hybrid Sulphur process is one technology out of a multitude of known technologies responsible for hydrogen production. Within the latter hydrogen production cycle, it is pivotal to recover O2 as a by-product from a sulphuric acid decomposition reaction that produces SO2, H2O and O2. It is assumed that a simple phase separation stage carried out on the reaction products would liberate SO2 and O2 as a gaseous mixture leaving behind H2O in the liquid state. Several separation technologies are available to effect SO2/O2 separation, but membrane technology has proved to be dearer due to simpli

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23

Mchabe, Dursman. "Sulphur self–retention and sulphur dioxide capture with active calcium minerals in mineral–rich coals / Mchabe, D." Thesis, North-West University, 2011. http://hdl.handle.net/10394/7037.

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In order to provide information for the development of clean coal technology, the sulphur self–retention and sulphur dioxide capturing properties of minerals present in low grade coals was investigated. This study consisted of detailed mineral analyses of coal and ash samples using results obtained from QEMSCAN and separate retention (coal) and capture (ash) experiments with laboratory scale reactors. Typical South African coal samples were used in this study. The ash content varied between 37.0 wt % and 47.9 wt % with active calcium oxide (from calcite and dolomite) present between 1.22 wt %

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24

Schmidt, Kurt A. G. "Solubility of sulphur dioxide in mixed polyethylene glycol dimethyl ethers." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/mq22670.pdf.

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25

Mello, Marcus. "Adsorption of sulphur dioxide from multicomponent mixtures on hydrophobic zeolites." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0032/NQ65466.pdf.

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26

Agha, Saad Arslan. "The control of sulphur dioxide emission from coal-fired stokers." Thesis, University of Leeds, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.293819.

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27

Namor, Omar G. "Sorbic acid interaction with sulphur dioxide in model food systems." Thesis, University of Surrey, 1987. http://epubs.surrey.ac.uk/847780/.

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Sorbic acid and sulphur dioxide are often used together, as preservatives,in many foods. Sorbic acid is known to undergo degradation in aqueous solutions, and this degradation appears to be accelerated in the presence of sulphur dioxide. The interaction between sorbic acid and sulphur dioxide is the subject of this thesis. The work is subdivided into five chapters, as follows: The first chapter deals with the chemistry of sorbic acid acid and sulphur dioxide. The second chapter describes a study of the degradation products of sorbic acid, in aqueous systems, in the presence of sulphur dioxide

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28

Esplin, Gordon John. "Heterogeneous reaction kinetics of sulphur dioxide and airborne limestone particles." Thesis, University of British Columbia, 1988. http://hdl.handle.net/2429/28379.

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The literature on acid rain provides evidence that large (>5 μm) alkaline particles in the atmosphere, which derived from surface soil, play an important role in mitigating the effect of acid rain. Not only do they help to neutralize acidity but they also are a source of nutrients to the terrestrial and aquatic environments. While ground-up limestone has been added to the forests and the lakes of regions deficient in alkalinity, this mode of application is prohibitively expensive. An economic alternative method of distribution would utilize the advective and turbulent diffusive processes with

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29

Thornton, David Phillip. "The New Zealand National Environmental Standards for ambient air quality: analysis and modelling case study." Thesis, University of Canterbury. Geography, 2007. http://hdl.handle.net/10092/1501.

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Historically, the New Zealand rationale behind air quality management has been to adopt an effects-based approach based on environmental impacts. Generally, this method has been efficient in that it permitted emitters to decide how to minimise and mitigate impacts. However, to address the inconsistencies in air quality management across New Zealand born of this approach, and to permit measures designed to improve the working of the Resource Management Act (RMA), National Environmental Standards for Ambient Air Quality have been developed and implemented to establish consistent regulation and p

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30

Small, Andrew Alexander. "The influence of air pollution on the transmission of Barley Yellow Dwarf Virus by Rhopalosiphum padi (L.)." Thesis, Imperial College London, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.313997.

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31

Rakowsky, Ademar R. "Simulations of the sulphur chemistry of a convective cloud." Thesis, McGill University, 1986. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=66090.

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32

Hunt, Gillian A. "Environmental modification of the responses of vicia faba to sulphur dioxide." Thesis, Loughborough University, 1989. https://dspace.lboro.ac.uk/2134/12479.

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33

Ngeleka, Tholakele Prisca. "Sulphur dioxide capture under fluidized bed combustion conditions / Tholakele Prisca Ngeleka." Thesis, North-West University, 2005. http://hdl.handle.net/10394/1416.

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An investigation was undertaken to determine the feasibility of increasing the hydrogen production rate by coupling the water gas shift (WGS) process to the hybrid sulphur process (HyS). This investigation also involved the technical and economical analysis of the water gas shift and the H2 separation by means of Pressure swing adsorption (PSA) process. A technical analysis of the water gas shift reaction was determined under the operating conditions selected on the basis of some information available in the literature. The high temperature system (HTS) and low temperature system (LTS) reactor

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34

Mansfield, Philippa Jane. "Interactions of atmospheric sulphur dioxide with fungal diseases of winter barley." Thesis, Imperial College London, 1989. http://hdl.handle.net/10044/1/47554.

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35

Blackie, Douglas Sinclair. "Sulphur dioxide : high resolution UV photoabsorption cross sections at 198 K." Thesis, Imperial College London, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.508327.

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36

Pilkington, Bridget Jane. "Phospholipid composition of Saccharomyces cerevisiae and Zygosaccharomyces bailii and their response to sulphur dioxide." Thesis, University of Bath, 1989. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.234034.

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37

Dursun, Sukru. "The effects of sulphur pollution on soil fungi and decomposition of tree leaf litters." Thesis, Cardiff University, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.321745.

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38

Tomlinson, David. "Stability of catalytic plate reactors." Thesis, University of Newcastle Upon Tyne, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.337374.

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39

Ansuategi, Alberto. "Economic growth and environmental quality : a critical assessment of the environmental Kuznets curve hypothesis." Thesis, University of York, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.326770.

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40

MacMillan, Douglas C. "Valuing the environmental benefits of reduced acid deposition in the semi-natural environment." Thesis, University of Stirling, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.244698.

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41

McCormick, Brendan Thomas. "Measuring volcanic sulphur dioxide degassing with the satellite-based Ozone Monitoring Instrument." Thesis, University of Cambridge, 2014. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.648608.

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42

Hayer, Catherine S. L. "Observations of sulphur dioxide emissions from the Soufriere Hills Volcano, Montserrat, W.I." Thesis, University of Reading, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.631704.

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The flux of sulphur dioxide (S02) gas has been used as an indicator of the eruptive activity and reservoir degassing of volcanoes around the globe and specifically during the eruption of Soufriere Hills Volcano on Montserrat, W.I., which has been semi-continuous since 1995. During this study, S02 emission rates measured using ground- and satellite-based instruments were used to evaluate the strengths and weaknesses of two ultraviolet instruments: the satellite-based Ozone Monitoring Instrument (OMI) and a ground-based Differential Optical Absorption Spectrometer (DOAS) instrument array, during

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43

Wright, E. A. "The effects of sulphur dioxide and nitrogen dioxide, singly and in mixture, on the growth of birch trees." Thesis, Lancaster University, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.372938.

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44

Citrone, Sharon Deborah. "The effects of sulphur dioxide and nitrogen dioxide on the relationship between Auchenorrhyncha species and their host plants." Thesis, Imperial College London, 1990. http://hdl.handle.net/10044/1/47809.

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45

Macdonald, Anne Marie. "Sulphur dioxide oxidation in a rainband : effects of in-cloud hydrogen peroxide production." Thesis, McGill University, 1989. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=55616.

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46

Wookey, Philip Andrew. "Effects of dry deposited sulphur dioxide on the decomposition of forest leaf litter." Thesis, Lancaster University, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.328496.

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47

Kargiolaki, Hariklia. "The response of poplar clones to atmospheric pollution by ozone and sulphur dioxide." Thesis, University of Oxford, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.253283.

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48

Bosac, Creana. "The impact of ozone and sulphur dioxide on reproductive development in oilseed rape." Thesis, University of Nottingham, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.306618.

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49

Dicey, M. "The effect of cold maceration with and without sulphur dioxide on pinot noir wine." Lincoln University, 1996. http://hdl.handle.net/10182/1057.

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The effects of varying levels of sulphur dioxide (SO₂) on the cold maceration process was investigated with Pinot noir (Vitis vinifera L.) wine. The effects of these varying levels on the wines composition and colour parameters were examined. Cold maceration is a technique whereby grapes are crushed and placed at low temperatures (4 - lO°C) in the presence 50 - 150 mgL⁻¹ SO₂. This process is believed to provide a medium for the extraction of water soluble phenolic compounds, rather than the alcoholic extraction employed in normal fermentations. The extraction of these phenolic compounds was mo

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50

Coetzee, Carien. "Oxygen and sulphur dioxide additions to Sauvignon blanc : effect on must and wine composition." Thesis, Stellenbosch : University of Stellenbosch, 2011. http://hdl.handle.net/10019.1/6733.

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Thesis (MScAgric (Viticulture and Oenology))--University of Stellenbosch, 2011.<br>Includes bibliogaphy.<br>ENGLISH ABSTRACT: Sauvignon blanc wines have become increasingly popular in South Africa as it is a cultivar that can be easily manipulated in the vineyard and cellar to produce a range of wine styles. These wines are usually given aroma descriptors such as green pepper, grassy and asparagus; while other more tropical aromas include passion fruit and guava. These aromas are thought to be mainly caused by methoxypyrazines and volatile thiols. These compounds are known to be character

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