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Dissertations / Theses on the topic 'Chromatography coupled to mass spectrometry'

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Published: 4 June 2021
Last updated: 1 February 2022

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1

Mullis, James Onis Jr. "Planar chromatography coupled with mass spectrometry." Thesis, Georgia Institute of Technology, 1992. http://hdl.handle.net/1853/27124.

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2

Xia, Yang. "Chromatography coupled with mass spectrometry in bioanalysis." Diss., Georgia Institute of Technology, 1999. http://hdl.handle.net/1853/27998.

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3

PAWLECKI-VONDERHEIDE, ANNE MARIE. "ELEMENTAL SPECIATION BY CHROMATOGRAPHIC SEPARATIONS INTERFACED TO INDUCTIVELY COUPLED PLASMA MASS SPECTROMETRY." University of Cincinnati / OhioLINK, 2003. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1054751575.

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4

Zulfiqar, Adnan. "The development and evaluation of methods for the screening of steroids using molecular imprinted polymers coupled with comprehensive gas chromatography/mass spectrometry and aptamers coupled with liquid chromatography/mass spectrometry." Thesis, Open University, 2016. http://oro.open.ac.uk/47962/.

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The profiling of hormones is an important requirement in sports dope testing and it is increasingly being used for clinical applications. The screening of samples for the detection of steroids is usually undertaken in urine and these analyses present many challenges. Issues related to the complexity of the matrix, the separation of exogenous from endogenous species and the very low detection limits have placed increasing demands on clinical and International Olympic Commission accredited laboratories. Whilst liquid chromatography (LC) systems provide a highly sensitive detection method for tar
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5

Moberg, My. "Liquid Chromatography Coupled to Mass Spectrometry : Implementation of Chemometric Optimization and Selected Applications." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-7071.

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6

Cairns, Warren Raymond Lee. "Interfacing high performance liquid chromatography with inductively coupled plasma mass spectrometry for speciation studies." Thesis, University of Plymouth, 1996. http://hdl.handle.net/10026.1/2193.

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A novel interface for the coupling of high performance liquid chromatography (HPLC) with inductively coupled plasma mass spectrometry (ICP-MS) for the speciation of organometallic compounds has been developed and utilised for a number of diverse applications. Desolvation of the sample prior to reaching the plasma is shown to facilitate a more versatile coupling of the two instrumental techniques. This has been achieved by first volatilising the aerosol after nebulisation of the sample in a heated cyclone spray chamber. The resulting vapour is removed using a membrane drier and a thermoelectric
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7

Allard, Erik. "Metabolic Studies with Liquid Separation Coupled to Mass Spectrometry." Doctoral thesis, Uppsala universitet, Analytisk kemi, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-110310.

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Metabolism is the sum of all chemical processes with the purpose to maintain life, as well as enable reproduction, in a living organism. Through the study of metabolism, increased understanding of pharmacological mechanisms and diseases can be achieved. This thesis describes several ways of doing so, including targeted analysis of selected metabolites and investigations of systematic metabolic differences between selected groups through pattern recognition. A method for exploring metabolic patterns in urine samples after intake of coffee or tea was developed. The methodology was later used wit
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8

Wink, Carina S. D. Verfasser], and Hans H. [Akademischer Betreuer] [Maurer. "1,2-diphenylethylamine designer drugs metabolism studies and toxicological analysis using gas chromatography-mass spectrometry and liquid chromatography-mass spectrometry coupled to low and high resolution-mass spectrometry / Carina S. D. Wink. Betreuer: Hans H. Maurer." Saarbrücken : Saarländische Universitäts- und Landesbibliothek, 2016. http://d-nb.info/1104733323/34.

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9

Quadri, Syeda. "Metabolomics Investigation of Glyceollins by On-Line Liquid Chromatography-Electrospray Ionization Tandem Mass Spectrometry and Fungal Metabolite Identification by Thermal Desorption Analysis Coupled with Gas Chromatography-Mass Spectrometry." ScholarWorks@UNO, 2013. http://scholarworks.uno.edu/td/1701.

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Metabolomics is an emerging field that entails the detailed characterization of the ensemble of metabolites produced by living organisms; subfields include drug metabolism and natural environmental toxin production. The first part of the dissertation pursued metabolism of glyceollins, i.e., isoflavones produced by soybeans, that are potential cancer therapy agents. In vivo glyceollin metabolites produced in rats were investigated by on-line Liquid Chromatography-Electrospray Ionization Tandem Mass Spectrometry. An odd-electron fragment ion at m/z 148, formed in violation of the even-electron r
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10

Evans, Charles Robert Jorgenson James W. "Multidimensional liquid chromatography coupled to mass spectrometry for the analysis of complex mixtures of proteins." Chapel Hill, N.C. : University of North Carolina at Chapel Hill, 2007. http://dc.lib.unc.edu/u?/etd,1468.

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Thesis (Ph. D.)--University of North Carolina at Chapel Hill, 2007.<br>Title from electronic title page (viewed Apr. 25, 2008). " ... in partial fulfillment of the requirements for the degree of Doctor of Philosophy in the Department of Chemistry." Discipline: Chemistry; Department/School: Chemistry.
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11

SADI, BAKI BILLAH MOHAMMED. "HIGH PERFORMANCE LIQUID CHROMATOGRAPHIC SEPARATION COUPLED TO INDUCTIVELY COUPLED PLASMA MASS SPECTROMETRY FOR ELEMENTAL SPECIATION IN ENVIRONMENTAL SAMPLES." University of Cincinnati / OhioLINK, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1130263794.

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12

KANNAMKUMARATH, SASI S. "TRACE ELEMENTAL SPECIATION USING CHROMATOGRAPHY/CAPILLARY ELECTROPHORESIS COUPLED TO INDUCTIVELY COUPLED PLASMA MASS SPECTROMETRY FOR FOOD, PHARMACEUTICAL AND ENVIRONMENTAL ANALYSIS." University of Cincinnati / OhioLINK, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1085673299.

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13

Fan, Wen. "Improved Dynamic Headspace Sampling and Detection using Capillary Microextraction of Volatiles Coupled to Gas Chromatography Mass Spectrometry." FIU Digital Commons, 2013. http://digitalcommons.fiu.edu/etd/982.

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Sampling and preconcentration techniques play a critical role in headspace analysis in analytical chemistry. My dissertation presents a novel sampling design, capillary microextraction of volatiles (CMV), that improves the preconcentration of volatiles and semivolatiles in a headspace with high throughput, near quantitative analysis, high recovery and unambiguous identification of compounds when coupled to mass spectrometry. The CMV devices use sol-gel polydimethylsiloxane (PDMS) coated microglass fibers as the sampling/preconcentration sorbent when these fibers are stacked into open-ended cap
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14

Ogata, Yuko. "Automated affinity measurement of biospecific interactions using a lab-on-valve apparatus coupled to electrospray ionization mass spectrometry /." Thesis, Connect to this title online; UW restricted, 2004. http://hdl.handle.net/1773/11607.

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15

De, Vos Betty-Jayne. "Gas chromatography coupled with ion trap mass spectrometry (GC-MS and GC-MS-MS) - for arson debris analysis." Diss., Pretoria : [s.n.], 2005. http://upetd.up.ac.za/thesis/available/etd-02082006-160506.

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16

Nascimento, DemÃtrius Fernandes do. "Nimodipine determination in human plasma by high-performance liquid chromatography coupled to tandem mass spectrometry (HPLC-MS-MS)." Universidade Federal do CearÃ, 2005. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=31.

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Conselho Nacional de Desenvolvimento CientÃfico e TecnolÃgico<br>A rapid, specific and highly sensitive liquid chromatography-tandem mass spectrometry method was developed to determine nimodipine in human plasma using dibucaine as the internal standard (IS) is described. The analyte (m/z 418,6 > 342,6) and IS (m/z 344,2 > 271,0) were extracted from plasma samples by liquid-liquid extraction using hexane-ethyl acetate (1:1v/v). Chromatography was performed on a Varian Polaris C18 analytical column (3 micrometer, 50 x 2,0 mm) and pre-column SecurityguardTM C18 (4,0 x 3,0 mm). The phase mobile c
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17

Ross, Robert L. "Taking It Down a Level: Low Flow Sampling of RNAs by Liquid Chromatography Coupled to Tandem Mass Spectrometry." University of Cincinnati / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1470757778.

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18

Wang, Zhenyu. "Supercritical Fluid Extraction Directly Coupled with Reversed Phase Liquid Chromatography for Quantitative Analysis of Analytes in Complex Matrices." Diss., Virginia Tech, 2004. http://hdl.handle.net/10919/30073.

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The purpose of this research was to design a simple, novel interface for on-line coupling of Supercritical Fluid Extraction (SFE) with High Performance Reversed Phase Liquid Chromatography (HP-RPLC), and to explore its ability for quantitative analysis of analytes in different matrices. First, a simple interface was developed via a single one six-port injection valve to connect the SFE and LC systems. A water displacement method was utilized to eliminate decompressed CO2 gas in the solid phase SFE trap and connection tubes. To evalute this novel hyphenated system, spiked polynuclear aromatic h
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19

Alpmann, Alexander [Verfasser], and Wolfgang [Akademischer Betreuer] Schwack. "Trace analysis of acrylamide by high-performance thin-layer chromatography coupled to mass spectrometry / Alexander Alpmann. Betreuer: Wolfgang Schwack." Hohenheim : Kommunikations-, Informations- und Medienzentrum der Universität Hohenheim, 2012. http://d-nb.info/1027353053/34.

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20

STOLL, GABRIELA COSTA. "METHOD DEVELOPMENT FOR DETERMINATION OF POLYCHLORINATED BIPHENYLS (PCBS) IN SURFACE WATER BY GAS CHROMATOGRAPHY COUPLED TO TANDEM MASS SPECTROMETRY." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2018. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=35914@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>PROGRAMA DE SUPORTE À PÓS-GRADUAÇÃO DE INSTS. DE ENSINO<br>Este trabalho consistiu na implementação, e consequente validação, de metodologia para determinação de bifenilas policloradas (PCBs) em amostras de água e material particulado por cromatografia gasosa acoplada à espectrometria de massas em tandem (GC-MS/MS). O método de análise de água superficial foi desenvolvido para a determinação simultânea de 41 PCBs; utilizando a Extração Acelerada por Solvente (ASE) para o materi
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21

Almassalkhi, Brittany A. "Arsenic Speciation, Detection, and Quantification in Drinking Water using High Performance Liquid Chromatography and Inductively Coupled Plasma Mass Spectrometry." University of Cincinnati / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1258580087.

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22

Alem, Fatima-Zahra. "Extraction and analysis by liquid chromatography coupled with mass spectrometry of Lawsonia inermis and the study of its anti-melanoma effect." Thesis, Bordeaux, 2021. http://www.theses.fr/2021BORD0044.

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Lawsonia inermis L. communément appelée Henné appartient à la famille des Lythraceae. Elle est connue pour son importance traditionnelle à la fois comme agent cosmétique et médicinal, en particulier dans les régions indigènes de l’Afrique du Nord, de l'Asie du Sud et des pays du Moyen-Orient. Les différentes parties de cet arbuste ; les feuilles, les tiges, les graines et les racines comportent différents constituants chimiques comme les naphtoquinones, les polyphénols, les flavonoïdes, les tanins, etc, qui ont des activités biologiques diverses.L’intérêt de cette plante méditerranéenne en plu
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23

Amirkhani, Ardeshir. "Development of Techniques and Methods for the Quantitative Analysis of Endogenous Substances by Microcolumn Liquid Chromatography Coupled to Mass Spectrometry." Doctoral thesis, Uppsala University, Analytical Chemistry, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-3990.

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<p>Liquid chromatography-mass spectrometry (LC-MS) is a powerful technique for the analysis of endogenous compounds. The introduction of electrospray ionization (ESI) as an interface between LC and MS has contributed strongly to a trend towards miniaturization of LC, due to the possibility to perform ESI at low flow rates. In this thesis, several aspects regarding the design of miniaturized LC systems and electrospray emitters were investigated. In addition miniaturized LC-ESI-MS have been used for the qualitative and quantitative analysis of endogenous polar compounds, peptides and protein di
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24

Hanley, Traci A. "Trace Elemental Methodologies for the Chromatographic Speciation of Silver Ions and Silver Nanoparticles and the Development of Rice Flour Internal Quality Control Material for Arsenic Speciation Applications using High Performance Liquid Chromatography." University of Cincinnati / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1491898753606019.

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25

Wang, Bin. "Utility of Cationic and Anionic Chiral Surfactants in Capillary Electrophoresis (CE) and CE Coupled to Mass Spectrometry (CE-MS)." Digital Archive @ GSU, 2009. http://digitalarchive.gsu.edu/chemistry_theses/16.

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The research presented in this thesis involves the application of chiral cationic and anionic surfactants for simultaneous enantioseparation of structurally similar compounds in capillary electrophoresis (CE) and CE coupled to mass spectrometry (CE-MS). The first chapter briefly introduces the fundamentals of CE and CE-MS, emphasizing the micellar electrokinetic chromatography (MEKC) and MEKC-MS techniques, as well as ionic liquids (ILs) and affinity CE (ACE). In chapter 2, a mixture of five racemic profen (PROF) drugs are simultaneously separated with the combined use of 2,3,6-tri-O-met
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26

Lee, Kim Chung. "Liquid chromatography coupled with electrospray-ionization mass spectrometry and matrix-assisted laser desorption/ionization time-of-flight mass spectrometry method development and applications for the analysis of food and medicinal herbs." HKBU Institutional Repository, 2009. http://repository.hkbu.edu.hk/etd_ra/995.

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27

Bijlsma, Lubertus. "The investigation of illicit drugs and their metabolites in water by liquid chromatography coupled to low and high resolution mass spectrometry." Doctoral thesis, Universitat Jaume I, 2014. http://hdl.handle.net/10803/284821.

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La investigación de drogas ilícitas (IDs) en aguas se ha convertido en tema de actualidad en los últimos años. Las IDs pueden entrar en las aguas residuales, inalteradas o como metabolitos, después de su consumo y excreción. Los procesos de depuración, comúnmente aplicados en las plantas de tratamiento de aguas residuales (WWTPs), son a menudo insuficientes y algunas IDs y/o sus productos de transformación (TPs) pueden ser transferidos continuamente a aguas medioambientales. La determinación de IDs y sus metabolitos en el ciclo del agua puede contribuir a entender el potente impacto de estos c
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28

Al-Qahtani, Khalid Mohammad. "Developing liquid chromatography-mass spectrometry strategies for investigating energy metabolism with application to isocitrate dehydrogenase mutations in cancer : development and application of methods for qualitative and quantitative analysis of TCA cycle metabolites using liquid chromatography coupled to mass spectrometry." Thesis, University of Oxford, 2015. https://ora.ox.ac.uk/objects/uuid:354009b1-30a5-43a0-bbf1-5907437ea53a.

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Isocitrate dehydrogenases (IDHs) act in the tricarboxylic acid (TCA) cycle to catalyse the conversion of isocitrate to 2-oxoglutarate (2-OG) with concomitant production of NADH and/or NADPH. In humans, mutations causing IDH1 and IDH2 substitutions have been found during DNA sequencing of human glioblastomas. Some cancerassociated IDH mutations promote the reduction of 2-OG to give D-2-hydroxyglutarate (D-2-HG) a chiral, polar dicarboxylic acid. Investigations on the underlying links between 2-HG and cancer require sensitive methods for monitoring IDH1 and IDH2 activities. The reported LC/MS me
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29

Arvidsson, Björn. "Quantitative Bioanalysis : Liquid separations coupled to targeted mass spectrometric measurements of bioactive compounds." Doctoral thesis, Uppsala universitet, Analytisk kemi, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-8581.

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Performing quantitative analysis of targeted bioactive compounds in biological samples, such as blood plasma, cerebrospinal fluid or extracts from pig liver, put high demands on the ruggedness of the method acquiring the results. In addition to the complexity of the sample matrix, the bioactive compounds targeted for analysis usually have low levels of natural abundance, further increasing the demand on the analytical method sensitivity. Furthermore, quantitation of analytes at trace levels in the presence of large amounts of interfering species in biofluids must aim for repeatable precision,
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Medley, Christopher M. M. S. "Characterization of Arsenic by High Performance Liquid Chromatography and Inductively Coupled Plasma Mass Spectrometry of Algal Extracts and Water in Evaporation Ponds." University of Cincinnati / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1353087601.

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31

Forsgard, Niklas. "Inductively Coupled Plasma Spectrometry for Speciation Analysis : Development and Applications." Doctoral thesis, Uppsala universitet, Analytisk kemi, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-8169.

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In analytical chemistry the main goal is normally to determine the identity and/or concentration of one or more species in a sample. The samples analyzed are often natural samples, containing numerous different species in a complex matrix and the choice of technique for multi-elemental detection is in general inductively coupled plasma spectrometry. The chemical forms of an element can affect many of its characteristics e.g. toxicity, which makes speciation analysis important. Therefore, determination of the identity and quantity of an element is still important, but for many applications meas
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32

Kujawinski, Dorothea [Verfasser], Torsten Claus [Akademischer Betreuer] Schmidt, and Oliver J. [Akademischer Betreuer] Schmitz. "Liquid Chromatography coupled to Isotope Ratio Mass Spectrometry of Selected Polar Compounds / Dorothea Kujawinski. Gutachter: Oliver J. Schmitz. Betreuer: Torsten Claus Schmidt." Duisburg, 2014. http://d-nb.info/1064580912/34.

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33

Zhang, Lijun [Verfasser], Torsten Claus [Akademischer Betreuer] Schmidt, and Oliver J. [Akademischer Betreuer] Schmitz. "Development and application of liquid chromatography coupled to isotope ratio mass spectrometry / Lijun Zhang. Gutachter: Oliver J. Schmitz. Betreuer: Torsten Claus Schmidt." Duisburg, 2014. http://d-nb.info/1048539571/34.

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34

Wan, Lili. "Determination of total selenium and seleno-amino acids in yeast and aquatic organisms by liquid chromatography and inductively coupled plasma mass spectrometry." Diss., Columbia, Mo. : University of Missouri-Columbia, 2007. http://hdl.handle.net/10355/4683.

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Thesis (Ph. D.)--University of Missouri-Columbia, 2007.<br>The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on March 4, 2008) Vita. Includes bibliographical references.
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35

Stuart, Orville Dean. "Investigation of Phosphorylated Proteins and Peptides in Human Cerebrospinal Fluid via High-Performance Liquid Chromatography Coupled to Elemental and Molecular Mass Spectrometry." University of Cincinnati / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1245823953.

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36

Pipes, Latisha C. "Detection of Illicit Drug Use in Blood: A Validation Study of Solid Phase Extraction Coupled with Liquid Chromatography and Tandem Mass Spectrometry." Bowling Green State University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1587613608312474.

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37

García-Altares, Pérez María. "Improvements in Liquid Chromatography coupled to Mass Spectrometry methods for the determination of legislated and emerging marine toxins in the Northwest Mediterranean coast." Doctoral thesis, Universitat Rovira i Virgili, 2015. http://hdl.handle.net/10803/352215.

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L’objectiu d’aquesta tesi és millorar l’aplicació de mètodes de cromatografia de líquids acoblada a espectrometria de masses (LC-MS) per a l’estudi de toxines lipofíliques i emergents produïdes per microalgues en un ecosistema litoral mediterrani (Delta de l’Ebre, Catalunya, NO Mar Mediterrani). La primera contribució fou l’avaluació de diferents condicions per implementar el mètode de control de referència de toxines lipofíliques en bivalves, obtenint majors rendiments i complint amb els requeriments legals. Aquest mètode s’aplicà en l’estudi d’una floració de Dinophysis sacculus a la badia d
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38

Owen, Linda Mary Welsh. "Development of a liquid chromatography-inductively coupled plasma mass spectrometry method for zinc specification in an in vitro enzyme digest of cooked food." Thesis, Lancaster University, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.314443.

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39

Loik, Nikita D. "Development and application of methods for qualitative and quantitative analysis of amino acid post-translational modifications using liquid chromatography coupled to mass spectrometry." Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:8c737f3c-b24d-437d-abac-bada61351173.

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The 2-oxoglutarate and ferrous ion dependent oxygenases are a super family of enzymes that are involved in a wide range of biological processes regulated trough the mechanism of post-translational modification (PTM). Such biological processes include hypoxia sensing (through regulating HIF transcription), fatty acid metabolism (through carnitine production), transcriptional regulation (through demethylation of histones), and collagen structure formation (through proline and lysine hydroxylation). To understand the underlying mechanisms of such regulatory processes, and to develop clinically us
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40

Nascimento, DemÃtrius Fernandes do. "Quantification of drugs with antimicrobial activity by high performance liquid chromatography coupled to mass spectrometry (LC-MS/MS): application in studies of comparative pharmacokinetics." Universidade Federal do CearÃ, 2011. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=7045.

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Conselho Nacional de Desenvolvimento CientÃfico e TecnolÃgico<br>Two robust, fast and sensitive methods for quantification of sulfamethoxazole (SMX), trimethoprim (TMP) and sulfadiazine (SDZ) in plasma using high performance liquid chromatography coupled to mass spectrometry (LC-MS/MS) was developed and validated. The methods involved liquid-liquid extraction with ethyl acetate using metoprolol and sulfamethoxazole as internal standards (PI). The chromatographic separations were performed using Genesis C18 column 100 x 2.1 mm, 4 microns (sulfadiazine) and Genesis C18 150 x 4.6 mm, 4 microns (S
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He, Jun. "Chiral Analysis Using Capillary Electrophoresis Coupled to Mass Spectrometry: Development of Novel Modes and Applications Using Molecular Micelles and Surfactant-Bound Monolithic Columns." Digital Archive @ GSU, 2011. http://digitalarchive.gsu.edu/chemistry_diss/61.

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Micellar electrokinetic chromatography (MEKC) and capillary electrochromatography (CEC) are two of the major capillary electrophoresis (CE) modes that have been interfaced to mass spectrometry (MS) for sensitive and selective analysis of chiral compounds. This research combines these two modes and expands their applications in chiral CE analysis. Chapter 1 is a review of amino acid based molecular micelles used in MEKC-MS for enantioselective analysis over the past five years. In this chapter, a typical MEKC-MS experiment setup as well as detailed standard operating procedure in synthesis of m
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42

Pinto, Angela Marie III. "Quantitative Analysis of Antioxidants from High Density Polyethylene (HDPE) by off-line Supercritical Fluid Extraction Coupled High Performance Liquid Chromatography." Thesis, Virginia Tech, 1997. http://hdl.handle.net/10919/36932.

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Plastics are widely used and they vary in their applicability, ranging from automobile parts, components for houses and buildings, and packaging for everything from food to electronic parts. The diverse applications of plastics, such as polystyrene, polyolefins and polyester, are credited to the incorporation of additives. Additives improve the performance of these and other polymer resins. Without the incorporation of such additives, for example Ethanox ® 330, some plastics would degrade during processing or over time. To ensure that the specified amount of an additive or combination of
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Nygren, Yvonne. "Advances in analytical methodologies for studies of the platinum metallome in malignant cells exposed to cisplatin." Doctoral thesis, Umeå universitet, Kemiska institutionen, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-37400.

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The scientific progress about the important chemotherapeutic drug substance cisplatin (CDDP) and its function has often been rendered by data difficult to interpret, and still many questions about its mode of action remains to be clarified by the scientific community. However, studies of CDDP possess a high complexity due to; i) low intracellular concentration, ii) many potential biomolecule targets, iii) poor or unknown stability of the intact drug and its biomolecule adducts and iv) complex and varying sample matrices. Metallomic studies, using advanced analytical techniques may contribute t
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WANDEKOKEN, FLÁVIA GALVÃO. "DEVELOPMENT OF METHOD FOR THE QUANTIFICATION OF VANADYL PORPHYRINS IN CRUDE OIL FRACTIONS BY HIGH PERFORMANCE LIQUID CHROMATOGRAPHY WITH FLOW INJECTION AND INDUCTIVELY COUPLED PLASMA MASS SPECTROMETRY." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2016. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=30343@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO<br>PROGRAMA DE SUPORTE À PÓS-GRADUAÇÃO DE INSTS. DE ENSINO<br>A cromatografia líquida de alta eficiência hifenada por injeção em fluxo com espectrometria de massa com plasma indutivamente acoplado (HPLC-FI-ICP-MS) foi utilizada para investigar vanádio ligado a porfirinas presente em frações de óleo cru. Em primeiro lugar, a amostra de óleo cru foi submetida a um fracionamento por meio de cromatografia líquida prepara
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Sales, Martínez Carlos. "Development of advanced analytical methodologies based on gas chromatography coupled to mass spectometry for the determination of pops and vocs in the food and environmental field." Doctoral thesis, Universitat Jaume I, 2019. http://hdl.handle.net/10803/668939.

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The work in this thesis has been clearly divided into three parts: In the first part, efforts were directed to obtaining a trace level quantification method for halogenated flame retardants using high-volume injections and gas chromatography coupled to GC-MS/MS tandem mass spectrometry. In the second part, the potential of the GC-MS / MS technique was evaluated together with the new atmospheric pressure chemical ionization source (APCI) for the quantification of PBDEs, NBFRs (including hexabromocyclododecane (HBCD)) and DL-PCBs at trace levels in food and environmental samples. In the thir
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Philipp, Anika-Anina Verfasser], and Hans H. [Akademischer Betreuer] [Maurer. "Studies on the phase I and II metabolism and the toxicological analysis of the alkaloids of the herbal drug of abuse Mitragyna speciosa Korth. (Kratom) using gas chromatography-mass spectrometry and liquid chromatography coupled to low- and high-resolution linear ion trap mass spectrometry / Anika-Anina Philipp. Betreuer: Hans H. Maurer." Saarbrücken : Saarländische Universitäts- und Landesbibliothek, 2011. http://d-nb.info/1051284848/34.

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Haider, Syed. "Enhanced gel electrophoresis (GE) and inductively coupled plasma-mass spectrometry (ICP-MS) based methods for the identification and separation of proteins and peptides." Thesis, Loughborough University, 2012. https://dspace.lboro.ac.uk/2134/10279.

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The main focus of the PhD study was to develop new gel electrophoresis and ICP-MS based methods to analyze a wide variety of the bio-molecules such as proteins, phosphoproteins and metalloproteins etc. The tricine-sodium dodecyl sulfate-polyacrylamide gel electrophoresis (tricine-SDS-PAGE) method is commonly used to resolve low molecular mass proteins, however, it requires a high percentage gel and a very complicated procedure to achieve this separation. This study describes a modification to tricine-SDS-PAGE to make it more effective for the separation of smaller proteins and for coupling to
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Rios, JeÃson Barros. "Chemical study of the roots of Jatropha mollissima ( Pohl ) Baill; identification of phenolic compounds in four species of the genus Anthurium by Liquid Chromatography coupled to Mass Spectrometry." Universidade Federal do CearÃ, 2011. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=6336.

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CoordenaÃÃo de AperfeiÃoamento de Pessoal de NÃvel Superior<br>This work aimed to study the chemical from the root of Jatropha mollissima (Euphorbiaceae), a plant native to northeastern Brazil. In this study we used chromatographic techniques in an attempt to isolate the chemical constituents of hexane and ethanol extracts of the root. Chromatographic treatment of extract allowed the isolation of a long aliphatic chain alcohol called triacontanol, a mixture of the steroids B-sitosterol and stigmasterol and a terpene latirano skeleton called jatrogrossidiona. Also in this work, we investigated
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Dutra, Camila Braga. "Desenvolvimento e validação de métodos analíticos para a determinação de contaminantes em polietileno tereftalato e polietileno de alta densidade pós-consumo." [s.n.], 2010. http://repositorio.unicamp.br/jspui/handle/REPOSIP/256316.

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Orientadores: Felix Guillermo Reyes Reyes, Maria Teresa de Alvarenga Freire<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia de Alimentos<br>Made available in DSpace on 2018-08-16T23:01:27Z (GMT). No. of bitstreams: 1 Dutra_CamilaBraga_D.pdf: 1974104 bytes, checksum: 7a0aae96f3654e27fb7d553ee756e522 (MD5) Previous issue date: 2010<br>Doutorado<br>Doutor em Ciência de Alimentos
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Van, Wyk Pieter-Hugo. "Novel methods of chemical speciation of Pt(IV/II) complexes in acid halide-rich solutions by ion-pair RP-HPLC coupled to ICP-OES/MS in conjunction with 195Pt NMR." Thesis, Stellenbosch : Stellenbosch University, 2013. http://hdl.handle.net/10019.1/80099.

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Thesis (PhD)--Stellenbosch University, 2013.<br>ENGLISH ABSTRACT: In this work a robust reversed phase ion-pairing high performance liquid chromatographic (RP-HPLC) method has been developed for the separation, characterization and quantification of all possible [PtCl6-nBrn]2- (n = 0 – 6) and [PtCl4-nBrn]2- (n = 0 – 4) complex anions using UV-Vis detection. High resolution 195Pt NMR of more concentrated PtII/IV solutions served to validate the relevant species assignments, particularly those of the stereoisomer species, cis- and trans- [PtCl4Br2]2-, [PtCl2Br4]2- and mer- and fac-[PtCl3Br3
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