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Dissertations / Theses on the topic 'Platinum metal'

Author: Grafiati

Published: 18 May 2024

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1

Trenholme, W. J. F. "Metal-organic frameworks for platinum group metal extraction." Thesis, University of Nottingham, 2016. http://eprints.nottingham.ac.uk/32795/.

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This Thesis describes the synthesis and characterisation of a variety of functionalised metal-organic frameworks (MOFs). These MOFs have been used for the extraction of platinum group metal (PGM) compounds from aqueous and organic solvents and for the storage of gases such as CO2, CH4 and the C2 hydrocarbons. Chapter 1 contains an introduction to PGM properties and uses with specific focus on the chemical properties which allow for separation of PGMs from base metal compounds and for separation between different PGM compounds. The synthesis and structure prediction of MOFs is then introduced,

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2

Jonck, Heine. "Development of platinum metal specific separating agents." Thesis, Nelson Mandela Metropolitan University, 2008. http://hdl.handle.net/10948/712.

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In this dissertation, the aim was to develop a platinum specific resin to be utilized for the early removal of platinum from the industrial feed solution. Efforts were therefore directed towards the syntheses of silica based resins, with active centra, designed for platinum. The large chlorometallate ions present in the feed stream, were characterized in terms of physical parameters relevant to phase distribution, namely distortability (RD), charge density, softness (σ) etc. Matching cations for each of the types were investigated. In order to attempt the design of platinum specific resins, di

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3

Wicks, Joseph Leslie Michael. "Routes to mixed metal compounds of the platinum group : metal σ-acetylide complexes and platinum clusters". Thesis, University of Cambridge, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.620495.

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4

Pike, Sarah Jane. "Dynamic platinum(II)- based metallosupramolecular architectures." Thesis, University of Edinburgh, 2012. http://hdl.handle.net/1842/7942.

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Over the past two decades, transitions metals have been extensively employed towards the construction (using coordination driven assembly) and operation (using reversible metal-ligand switching motifs) of supramolecular architectures. This Thesis details the investigation of an array of dynamic platinum(II)-based metallosupramolecular architectures and includes a series of model studies on switchable platinum(II) coordination modes. Chapter Two describes the synthesis and study of a series of prototype noninterlocked molecular machines. The inherent dynamics of intramolecular metalligand subst

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5

Ringo, Jessica M. "Square planar d8 metal complexes with nitrogen-based ligands: structural analysis, metal-metal cooperativity, and applications." University of Cincinnati / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1562842509907911.

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6

Sherman, D. J. "Studies on some platinum metal compounds." Thesis, University of Oxford, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.382671.

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7

Crofts, Rhona D. "Platinum metal complexes of macrocyclic ligands." Thesis, University of Edinburgh, 1995. http://hdl.handle.net/1842/13493.

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8

Sekota, Mantoa Makoena C. "Catalytic reactions of platinum group metal phthalocyanines." Thesis, Rhodes University, 1999. http://hdl.handle.net/10962/d1006151.

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The voltammetric behaviour of I-cysteine and other organic compounds such as hydrazine, hydroxylamine and methionine has been studied on GCE modified with phthalocyanine complexes of osmium, rhodium and ruthenium. For cysteine oxidation, the catalytic activity of the electrode was dependent the nature of the axial ligand. When cyanide and dimethylsulphoxide (DMSO) were used as axial ligands, giving (DMSO)(Cl)Rh(III)Pc, [(CN)₂Rh(III)Pc], (DMSO)₂0S(II)Pc and [(DMSO)₂Ru(II)Pc].2DMSO complexes, the peak current increased with repetitive scanning, indicating the increase in catalytic activity of th

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9

Acharya, Suvra. "Platinum metal`s complexes: synthesis and characterization." Thesis, University of North Bengal, 2011. http://hdl.handle.net/123456789/1384.

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10

Smale, Simon. "Study of the hydrogen evolution reaction on platinum and platinum group metal surfaces." Thesis, Cardiff University, 2008. http://orca.cf.ac.uk/54760/.

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The hydrogen evolution reaction (HER) has been examined on a variety of Pt and Pt-group metal surfaces to investigate the rate of the reaction. Pt stepped single crystal surfaces were investigated in relation to the HER using cyclic voltammetry, linear sweep voltammetry and multi-frequency AC voltammetry. It was found that the hydrogen evolution reaction activity did not show a dependence on the structure of single crystal platinum electrode surfaces. Thick films of Au, Rh and Pd were deposited onto Pt {111} and successfully annealed to give pseudomorphic surfaces of the bulk metal. The aim of

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11

Look, Jennifer L. "Mechanistic studies of reactions between molecular oxygen and platinum alkyl and platinum hydrocarbyl hydride complexes /." Thesis, Connect to this title online; UW restricted, 2004. http://hdl.handle.net/1773/11599.

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12

Matthews, Richard P. "Ion Pairing in Aqueous Metal Sulfates and Platinum Group Metal Ammonium Solutions." Doctoral thesis, University of Cape Town, 2010. http://hdl.handle.net/11427/6330.

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The structure and dynamics of ions and ion pairs in solution play an integral part in several biological and chemical processes. Historically the calculation of ion pair association constants from computer simulations has been complicated due to the difficulty in validating metal ion force fields for solution simulations. In this thesis a force field for divalent metal ions in metal sulfate solutions (i.e. Mg2+SO4 2-, Ca2+SO4 2-, Mn2+SO4 2-, Fe2+SO4 2-, Co2+SO4 2-, Ni2+SO4 2-, Cu2+SO4 2- and Zn2+SO4 2-) important in physical and biophysical experiments is produced. Potential of mean force calc

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13

Bell, Michael Niall. "Organometallic platinum group metal complexes incorporating macrocyclic ligands." Thesis, University of Edinburgh, 1987. http://hdl.handle.net/1842/13895.

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14

Spankie, S. A. A. "Ylide complexes of palladium and platinum." Thesis, Heriot-Watt University, 1987. http://hdl.handle.net/10399/1018.

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15

Gash, Rosslyn Clare. "Metal haloalkyl in complexes in catalysis." Thesis, University of St Andrews, 1993. http://hdl.handle.net/10023/14706.

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In this thesis, the preparation of a number of halomethyl complexes of rhodium, platinum, and palladium is described. Complexes of the type trans-[Rh(CH2X)X(P4)]+ (X = Cl, Br, I, P = PMe3, dmpe) were found to be unstable, decomposing in situ to give a mixtures of dihalo, trihalo, and phosphine ylide species. Platinum and palladium species of the type trans-M(CH2X)X(PEt3)2 (X = Cl, I, M = Pt, Pd), which were formed by the reaction between M(PEt3)3 CH2XY were also unstable. In the case of platinum, phosphine ylide species were isolated from reaction mixtures, whilst the palladium halomethyl spec

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16

Kruyswijk, Lizelle. "Electrorefining of base metal refinery residue copper alloy for platinum group metal recovery." Master's thesis, University of Cape Town, 2009. http://hdl.handle.net/11427/6080.

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Secondary leach concentrate (SLC) is an important bleed stream for minor elements from Anglo Platinum’s Base Metal Refinery (BMR) which produces copper nickel and cobalt sulphate. It contains mainly sulphur, iron jarosites, unleached base metals and platinum group metals (PGMs), which makes the treatment of SLC necessary. The SLC is currently toll-refined at Umicore’s Hoboken smelter and refinery to recover revenue from entrapped valuable metals. This method of treatment results in excessively high costs due to high transport and toll refining expenses as well as penalties. Thus, an in-house m

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17

Ghosh, Biswa Nath [Verfasser]. "Multivalent binding in platinum metal complexes / Biswa Nath Ghosh." Gießen : Universitätsbibliothek, 2011. http://d-nb.info/1064990460/34.

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18

Carmichael, J. "Hydrogenation of deactivated carbonyls over platinum group metal catalysts." Thesis, Queen's University Belfast, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.426964.

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19

Wells, Peter Philip. "Controlled surface modification of supported platinum group metal catalysts." Thesis, University of Southampton, 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.438652.

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20

Stanger, Gillian. "Preparation and characterisation of the platinum group metal fluorides." Thesis, University of Leicester, 1988. http://hdl.handle.net/2381/33924.

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An extensive reveiw of the platinum group metal fluorides has been carried out and in the light of this, new preparative routes have been developed and characterisation has been significantly improved. The preparation of the platinum group metal fluorides in both static and dynamic systems is discussed in chapter two. The fluorinations of ruthenium, rhodium and platinum sponges in dynamic systems proved to be of greatest interest. In these studies large amounts of ruthenium hexafluoride and platinum hexafluoride were produced and traces of rhodium hexafluoride were noted, where as previously m

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21

Johnson, T. "Platinum group metal modifications of TiO₂ for environmental remediation." Thesis, University of Liverpool, 2017. http://livrepository.liverpool.ac.uk/3006082/.

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22

Ghosh, Biswanath [Verfasser]. "Multivalent binding in platinum metal complexes / Biswa Nath Ghosh." Gießen : Universitätsbibliothek, 2011. http://nbn-resolving.de/urn:nbn:de:hebis:26-opus-84600.

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23

Forder, Robin James. "Transition metal complexes of phosphine and mixed phosphathia ligands." Thesis, University of Southampton, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.243129.

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24

Newell, Helen E. "Alkane adsorption on metal surfaces." Thesis, University of Nottingham, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.243748.

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25

Cartwright, P. S. "Synthetic and spectroscopic studies of transition metal complexes." Thesis, Bucks New University, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.380302.

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26

Luedtke, Avery T. "Synthesis, structure, and reactivity of five-coordinate platinum(IV) complexes /." Thesis, Connect to this title online; UW restricted, 2007. http://hdl.handle.net/1773/11565.

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27

Gregory, Adrian John. "The understanding and development of novel platinum electroplating baths." Thesis, University of Southampton, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.261556.

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28

Bojczuk, M. "Carbonyl exhange mechanisms in transition metal compounds." Thesis, University of Kent, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.372765.

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29

Vos, Amelda. "Evaluation of exposure to airborne soluble platinum in a precious metal refinery during non–routine operations / Amelda Vos." Thesis, North-West University, 2011. http://hdl.handle.net/10394/7601.

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Background: Platinum refinery workers are exposed to various elements during the refining process, with soluble platinum salts posing a potential health risk. Platinum salts are extremely potent sensitisers that can result in the clinical syndrome of platinum salt sensitivity (PSS) that leads to skin and respiratory hypersensitivity in refinery workers. Several published research articles document refinery workers’ exposure levels to soluble platinum salts during production. However, the exposure levels to soluble platinum salts during non–routine stock take activities are unknown although cas

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30

Li, Yuan. "Synthesis and mechanical characterization of transversely isotropic nanoporous platinum." Thesis, Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/42927.

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Nanoporous (NP) metal foams combine desirable characteristics of metals with unique nanoarchitectural features to yield weight normalized properties far superior than either dense metals or bulk metal foams. Due to their high surface to volume ratios these structures show great promise as components of fuel cells, as sensors and have been suggested for use in biological applications, for example as antimicrobial scaffolds or as platforms on which to explore biological material behavior. While most NP metal foams are isotropic, structures with anisotropic features spanning different length sc

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31

Petroski, Janet Marie. "Platinum metal nanoparticles : investigation of shape, surface, catalysis and assembly." Diss., Georgia Institute of Technology, 2001. http://hdl.handle.net/1853/30961.

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32

Martinez, Josep Vicent Colomer i. "Towards separation of platinum group metal anions from feed solutions." Thesis, University of Southampton, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.496074.

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33

Coll, Richard Kevin. "The structural and reaction chemistries of some platinum metal complexes." Thesis, University of Canterbury. Chemistry, 1988. http://hdl.handle.net/10092/8553.

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The work described in this thesis is concerned principally with the preparation, photochemistry, and structural chemistry of some platinum metal complexes. The work is in two parts. The first part is a study of the photochemistry of complexes of the stoichiometric type M(NO)XnL₂ n = 2 or 3 for M = Ru, Rh, Os, Ir; X = Cl, Br, I; and L = R₂s, R₂se, Ph₃P, Ph₃As, and Ph₃ Sb, and the second part is on the preparative and structural chemistries of halogeno- complexes of iridium, ruthenium and rhodium. The main photochemical reaction observed was oxidation of the ligand (R₂S and R₂Se to R₂SO and R₂S

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34

Lenthall, Joseph T. "Anion and platinum group metal binding of bis(thioureido) ligands." Thesis, Durham University, 2007. http://etheses.dur.ac.uk/2854/.

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A series of bis(thioureido) ligands have been synthesised, which show anion binding in acetone-d(_6). Their structures have been determined by X-ray crystallography and some exhibit hydrogen bonding interactions with the π-electrons of the the thiocarbonyl bond. This hydrogen bonding interaction has been investigated for the general thiocarbonyl and carbonyl bond using the CSD, and a marked difference in the interaction of hydrogen bond donors with the π-electrons of carbonyl and thiocarbonyl bonds has been shown. The bis(thioureido) ligands have been coordinated to platinum group metals and t

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35

Wenger, J. C. "Surface chemistry of the group IIB metal dimethyls on platinum." Thesis, University of East Anglia, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.334697.

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36

Mack, Cherie-Lynn. "Screening of technologies for the recovery of rhodium (III) metal ions from a precious metal refinery wastewater." Thesis, Rhodes University, 2005. http://hdl.handle.net/10962/d1004046.

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The selective recovery of rhodium from wastewaters, in which the metal would be otherwise lost, would be highly profitable if the process were suitably low-cost. Current recovery processes are generally high maintenance and high-cost, whereas biological processes can be engineered to run with little external input in terms of cost and maintenance. Three emerging technologies were chosen based on their reported efficiency when removing base metals from wastewaters. The first technology screened, the sulphide-extraction membrane bioreactor (SEMB), consists of a sulphate-reducing prokaryote (SRP)

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37

Fraser, Adam Earl. "Synthesis and characterisation of gold- and platinum-based multimetallic catalysts." Thesis, University of Cambridge, 2016. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.709517.

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38

Mayo, Richard Andrew. "Transition-metal derivatives of phosphine, arsine and stibine." Thesis, University of Edinburgh, 1986. http://hdl.handle.net/1842/15303.

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39

Nxusani, Ezo. "Synthesis and analysis of Novel Platinum group Metal Chalcogenide Metal Quantum Dot and Electrochemical Markers." University of the Western Cape, 2018. http://hdl.handle.net/11394/6424.

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Magister Scientiae - MSc (Chemistry)<br>Although cadmium and lead chalcogenide quantum dot have excellent optical and photoluminescent properties that are highly favorable for biological applications, there still exists increasing concerns due to the toxicity of these metals. We, therefore, report the synthesis of new aqueous soluble IrSe quantum dot at room temperature utilizing a bottom-up wet chemistry approach. NaHSe and H2IrCl6 were utilized as the Se and Ir source, respectively. High-resolution transmission electron microscopy reveals that the synthesized 3MPA-IrSe Qd are 3 nm in diamete

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40

Getton, Frederick P. "Design of metal oxide catalysts." Thesis, Brunel University, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.314049.

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41

Getty, April D. "Syntheses and reactivity studies of hydroxo-palladium(II) and amido-platinum(IV) complexes /." Thesis, Connect to this title online; UW restricted, 2001. http://hdl.handle.net/1773/8653.

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42

Coleman, Nicholas Richard Boldero. "Direct liquid crystal templating of mesoporous silica and platinum." Thesis, University of Southampton, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.302011.

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43

Coston, T. P. J. "Studies of transition metal complexes using dynamic NMR techniques." Thesis, University of Exeter, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.380737.

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44

Hinot, Karelle. "Catalytic soot oxidation by platinum on sintered metal filters influence of the platinum quantity, particle size and location, and investigation of the platinum soot contact /." Karlsruhe : Univ.-Verl. Karlsruhe, 2007. http://www.uvka.de/univerlag/volltexte/2007/201/.

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45

Hinot, Karelle. "Catalytic soot oxidation by platinum on sintered metal filters influence of the platinum quantity, particle size and location, and investigation of the platinum soot contact." Karlsruhe Univ.-Verl. Karlsruhe, 2006. http://www.uvka.de/univerlag/volltexte/2007/201/.

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46

McAslan, Ewan Blyth. "Synthetic, structural and spectroscopic studies on some platinum group metal complexes." Thesis, University of Edinburgh, 1986. http://hdl.handle.net/1842/28560.

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47

Ghaffar, Tallit. "Synthesis, structure and catalytic activity of some platinum group metal complexes." Thesis, King's College London (University of London), 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.281709.

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48

Wilson, Tamsyn Sarah Elisabeth. "The interaction of platinum group metal nanocrystals with selected oxide supports." Thesis, University of Cambridge, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.614912.

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49

Burger, M. R. (Marga Retha). "Condensed phase properties of platinum group metal complexes from computational simulations." Thesis, Stellenbosch : University of Stellenbosch, 2004. http://hdl.handle.net/10019.1/16263.

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Thesis (MSc)--University of Stellenbosch, 2004<br>ENGLISH ABSTRACT: A variety of computational techniques are used to calculate structural, thermodynamic and transport properties of two specific Platinum Group Metal (PGM) complex systems. The first system consists of a PGM complex ([PdCl4]2-; [PtCl4]2-; [PtCl6]2- or [RhCl6]3-) with sodium counter-ions in a water solution at 30ºC and at a concentration of 0.106 mol/dm3. The second system under consideration is that of a PGM complex ([PdCl4]2-; [PtCl4]2-; [PtCl6]2- or [RhCl6]3-) with sodium counter-ions in a water solution in the presence o

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50

Bunker, Janet Constance. "The effects of some platinum group metal complexes on bacterial growth." Thesis, Royal Holloway, University of London, 1985. http://repository.royalholloway.ac.uk/items/a0148261-1454-40d1-94dc-bf2b46c26c71/1/.

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Experimental conditions were established which gave reproducible power-time and biomass-time traces for Klebsiella aerogenes growing in glucose-limited medium and Staphylococcus aureus 13137, Ps47 and Pseudomonas aeruginosa in nutrient broth. Aeration of the cultures was critical in determining the shape and reproducibility of the power-time traces. High oxygen tensions caused a reduction in the final biomass value and an increase in waste heat production in nutrient broth. Biomass production occured without any accompanying heat production and vice versa in nutrient broth. The reproducible po

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