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Dissertations / Theses on the topic 'Solid phase extraction Liquid-liquid extraction 4'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Menon, Sreejit Rajiv Menon. "Design and Development of 2-Functionalized Calix[4]arenes and Their Investigation in the Separation of Lanthanides." University of Toledo / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1461715995.

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2

Zimmermann, Benno F. "Proanthocyanidins in barley and malt analyzed by pressurized liquid extraction, solid-phase extraction and HPLC." [S.l.] : [s.n.], 2005. http://deposit.ddb.de/cgi-bin/dokserv?idn=979090113.

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3

Möller, Kristina. "Molecularly Imprinted Solid-Phase Extraction and Liquid Chromatography for Biological Samples." Doctoral thesis, Stockholms universitet, Institutionen för analytisk kemi, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-1042.

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This thesis focuses on the use of molecularly imprinted polymers as selective sorbents for solid-phase extraction (MISPE). The MISPE methods developed were mainly intended for use with biological samples, such as human urine and blood plasma. These body fluids are complex samples, which often need an effective clean-up step before analysis to reduce the levels of possible interfering substances from the matrix, especially if the analytes are present in trace amounts. Solid-phase extraction (SPE) is a well-established and routinely used method for clean-up and preconcentration of samples from d

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4

Slack, Gregory C. "Coupled solid phase extraction-supercritical fluid extraction on-line gas chromatography of explosives from water." Diss., This resource online, 1992. http://scholar.lib.vt.edu/theses/available/etd-05042006-164508/.

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5

Möller, Kristina. "Molecularly imprinted solid-phase extraction and liquid chromatography/mass spectrometry for biological samples /." Stockholm : Department of Analytical Chemistry, Stockholm University, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-1042.

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6

Zimmermann, Benno F. [Verfasser]. "Proanthocyanidins in barley and malt analyzed by pressurized liquid extraction, solid-phase extraction and HPLC / Benno F Zimmermann." Aachen : Shaker, 2005. http://d-nb.info/979090113/34.

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7

Shearer, Justin W. "Fundamental Studies With Functionalized Low Temperature Glassy Carbon In Liquid Chromatography, Solid-Liquid Extraction, And Capillary Electrophoresis." The Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=osu1218477883.

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8

Mills, Malcolm John. "Effective use of microbore LC with peak compression for the analysis of drugs in biological fluids." Thesis, University of Sunderland, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.297131.

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9

Saini, Gaurav. "Functionalization of Diamond and Its Application in High Performance Liquid Chromatography and Solid Phase Extraction." BYU ScholarsArchive, 2010. https://scholarsarchive.byu.edu/etd/2797.

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The primary focus of my work was to chemically functionalize diamond as normal and reversed phases for solid phase extraction (SPE) and high performance liquid chromatography (HPLC). Diamond was functionalized with -NH2 groups via self-limiting adsorption of an amine-containing polymer, polyallylamine (PAAm), onto oxidized diamond particles. The chemical stability of these particles was improved by thermal curing or chemical crosslinking with 1,2,5,6-diepoxycyclooctane. The reversed phase material for SPE was synthesized by reacting amine-functionalized diamond particles with long chain alkyl

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10

Zhou, Ling. "DEVELOPMENT OF A UNIVERSAL POLYMERIC STATIONARY PHASE FOR SOLID PHASE EXTRACTION AND AN IONIC LIQUID MOBILE PHASE MODIFIER FOR SEPARATION OF NATIVE PROTEINS BY LIQUID CHROMATOGRAPHY." Miami University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=miami1371503762.

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11

Ma, Wai Tang. "Analysis of polar nitroaromatics in groundwater by using solid-phase extraction and liquid chromatography-mass spectrometry." HKBU Institutional Repository, 2004. http://repository.hkbu.edu.hk/etd_ra/581.

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12

Jajuli, Maizatul Najwa. "Extraction liquid-liquide modulée électrochimiquement et microextraction en phase solide de composés pharmaceutiques sélectionnés." Electronic Thesis or Diss., Université de Lorraine, 2019. http://www.theses.fr/2019LORR0127.

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Les méthodes classiques de préparation d'échantillons pour la détermination de composés polaires, telles que l'extraction liquide-liquide (LLE) et l'extraction en phase solide (SPE), ne sont généralement pas efficaces en raison de multiples étapes, d’une faible récupération et d’une consommation élevée de solvants organiques. Cette thèse traite du développement de nouvelles méthodes de préparation d’échantillons, à savoir l’extraction par voie liquide-liquide modulée électrochimiquement (EMLLE) et l’extraction bar-micro en phase solide (bar-μ-SPE) afin de déterminer les composés pharmaceutique

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13

Alsudairy, Ziad. "Identification of Major Organic Constituents of Saffron Isolated by Solid Phase Extraction and Column Chromatography." DigitalCommons@Robert W. Woodruff Library, Atlanta University Center, 2019. http://digitalcommons.auctr.edu/cauetds/200.

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Water extracts of saffron, a spice derived from the plant Crocus Sativus L. obtained from India and Iran, were analyzed by liquid chromatography-mass spectrometry (LC-MS) and gas chromatography-mass spectrometry (GC-MS). The components in the extracts were separated on four different solid phase extraction cartridges with four different solvents and by silica gel column. Analysis was done by GC-MS, LC-MS and UV-Vis spectroscopy. The extracts separated into three distinct bands (two bright yellow and one orange) on the silica gel column. Based on GC-MS, the extracted compounds show many structu

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14

Martin, Danica Paige. "Optimization of a Method for the Extraction of Drugs of Abuse from Wastewater." Bowling Green State University / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1617014087323429.

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15

Adaway, Joanne E., Mirko Peitzsch, and Brian G. Keevil. "A novel method for the measurement of plasma metanephrines using online solid phase extraction-liquid chromatography tandem mass spectrometry." Sage, 2015. https://tud.qucosa.de/id/qucosa%3A35429.

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Background: Measurement of plasma metanephrine, normetanephrine and 3-methoxytyramine is useful in the diagnosis of phaeochromocytomas, but many assays require a large volume of plasma due to poor assay sensitivity, and often require lengthy sample preparation. Our aim was to develop a method for measurement of plasma metanephrines using a small sample volume with minimal hands-on preparation. Methods: Samples were deproteinised using 10 K spin filters prior to online solid phase extraction using a Waters Acquity UPLC Online SPE Manager (Waters, Manchester, UK) coupled to a Waters Xevo TQ-S ma

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16

Harun, Norlida. "Application of molecularly imprinted solid phase extraction, enzyme-linked immunosorbent assay and liquid chromatography tandem mass spectrometry to forensic toxicology." Thesis, University of Glasgow, 2010. http://theses.gla.ac.uk/1992/.

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The rapid growth of ketamine and amphetamine misuse worldwide has led to the development of methods for the detection and analysis of ketamine and amphetamines in biological specimens. Most methods previously developed in forensic toxicology for the detection of ketamine and amphetamines used GC-MS. The present work developed alternative methods based on LC-MS/MS. Ketamine was chosen as the drug of interest because there are no data currently available on the extent of ketamine abuse in Malaysia even though a large amount of ketamine has been seized by the Malaysian Royal Police, while ampheta

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17

Guokaitė, Gabrielė. "Antidepresantų amitriptilino ir venlafaksino mišinio išskyrimo iš kraujo plazmos optimalių sąlygų nustatymas." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2014. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2014~D_20140618_215636-47231.

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Atlikta mokslinių literatūros šaltinių apžvalga. Tiriamųjų medžiagų identifikavimui ir kiekybinei analizei pritaikyta ir validuota efektyvioji skysčių chromatografija. Antidepresantų mišinys išskirtas iš kraujo plazmos kietos fazės ekstrakcijos metodu. KFE metodas optimizuotas keičiant eliuentą ir eliuento pH. Atliktas optimizacijos sąlygų palyginimas. Nustatyti 3 organiniai tirpikliai, kuriais efektyviausiai eliuuojamos sorbente sulaikytos tiriamosios medžiagos bei gauti statistiškai patikimi rezultatai (p>0,05) : 2 proc. etano rūgšties tirpalas 100 proc. metanolyje, 2 proc. etano rūgšties ti

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18

Alford, Shannon Recca. "Analytical method for detecting PCB derivatives at low levels in surface water samples by solid phase extraction-liquid chromatography/mass spectrometry." Mississippi State : Mississippi State University, 2005. http://library.msstate.edu/content/etd/show.asp?etd=etd-12142004-142520.

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19

Alford, Shannon Recca. "ANALYTICAL METHOD FOR DETECTING PCB DERIVATIVES AT LOW LEVELS IN SURFACE WATER SAMPLES BY SOLID PHASE EXTRACTION-LIQUID CHROMATOGRAPHY/ MASS SPECTROMETRY." MSSTATE, 2004. http://sun.library.msstate.edu/ETD-db/theses/available/etd-12142004-142520/.

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Polychlorinated biphenyls (PCBs) and their metabolic derivatives are ubiquitous environmental contaminants. These compounds are of concern because of their persistence and bioaccumulation in nature. PCBs and the hydroxylated metabolites have shown endocrine-disrupting activity. A method of detection in surface water samples is important to identify and quantify the environmental contamination. In this research we have attempted to develop a method of detection. Six representative polychloromethoxybiphenyls (PCMBs) were prepared. The corresponding polychlorobiphenylols, hydroxylated PCB metabol

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20

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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21

Beltran, Carbó Antoni. "Synthesis of novel molecularly imprinted polymers and their application to the solid-phase extraction of water-based matrices." Doctoral thesis, Universitat Rovira i Virgili, 2010. http://hdl.handle.net/10803/9049.

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La present tesi s'ha desenvolupat dintre de la línia de recerca que el grup té sobre el desenvolupament de nous sorbents polimèrics per a aplicar-los com a sorbents en extraccions en fase sòlida. <br/>En aquest cas, els sorbents sintetitzats són altament selectius per a la molècula d'interès i es coneixen com a sorbents d'empremta molecular. <br/>Pel que fa al mètode de síntesi s'han explorat diferent tipus de polimeritzacions així com diferents tipus d'interacció entre els components que constitueixen el polímer a fi de millorar tant el procés de síntesi com el reconeixement de la molècula ob

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22

Ismailov, Taner. "Quantification of resin acids, fatty acids and sterols in process and waste water from forest industry." Thesis, Karlstads universitet, Avdelningen för kemi och biomedicinsk vetenskap, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-28179.

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This work focuses on wood extractives in effluents from the CTMP plant at Skoghall Mill. Pulp and paper industry effluents contain mostly natural compounds which are part of the trees. They are toxic to aquatic life but harmless in nature, as they are present in low concentrations. Processing tons of wood, such as in a pulp mill, strongly increases the concentrations of the toxic compounds (Ali, M. and Sreekrishnan, T., 2001) which have to be treated before transferring to the aquatic environment.Extractives can be found in different forms, as micelles soluble in water, unprocessed in fibers o

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23

Gobburi, Ashta Lakshmi Prasad. "An LC-MS/MS APPROACH FOR GANGLIOSIDES PROFILING IN BRAIN AND RETINAL TISSUE OF MICE: APPLICATION TO GLAUCOMA MICE AGE STUDIES." Cleveland State University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=csu1521174979758726.

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24

Xoliswa, Madlanga. "Method development and Validation for the determination of selected Polycyclic Aromatic Hydrocarbons (PAHs) in water by Solid Phase Extraction and High Performance Liquid Chromatography." Thesis, Vaal University of Technology, 2014. http://hdl.handle.net/10352/392.

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Polycyclic Aromatic Hydrocarbons (PAHs) are one of the pollutants in the environment. They are organic compounds that consist of more than one aromatic ring (Kanchanamayoon & Tatrahun 2008). Due to less information forthcoming regarding the levels of PAHs in Vaal area, this study is to evaluate the levels of PAHs in the rivers around Vaal Triangle. Three river sites such as Vaal, Barrage and Klip Rivers were selected to investigate the concentration of polycyclic aromatic hydrocarbons in water. Validation of an analytical method is the process by which it is established by laboratory studies,

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25

Carvalho, Ana Rita Martins. "Monitorização de desreguladores endócrinos em águas de rede e águas residuais por SPE-UPLC-ESI-MS/MS. Empresa Portuguesa das Águas Livres (EPAL)." Master's thesis, ISA/UTL, 2012. http://hdl.handle.net/10400.5/5371.

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Engenharia do Ambiente - Instituto Superior de Agronomia<br>Water is an essential factor in the life and environmental issues and is a current topic of extreme importance to human health. Endocrine disrupters affect the endocrine system, significantly altering the vital functions in living beings. Thus, it is essential to undertake the monitoring of aquatic systems that exposure to and bioaccumulation of these compounds is mitigated. The objective of this study is to monitor the presence of ten EDC in 60 water samples distributed by EPAL and in 24 samples of wastewater from a treatment plant w

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26

Abdulrheem, Ali Jamal. "Detection and Quantitation of Tetracycline Antibiotics in Agricultural Swine Wastes." TopSCHOLAR®, 2017. http://digitalcommons.wku.edu/theses/1931.

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The spread of tetracyclines through agricultural systems is causing the present bacteria to develop antibiotic resistance. The spread of this bacteria, as well as the tetracycline antibiotics in the environment is dangerous because these antibiotics pose health hazards for humans. The overuse of antibiotics, which are added to livestock feed, results in the antibiotics being released into the environment via animal feces. In this research, we have attempted to design an analytical method to isolate antibiotics from agricultural wastes with subsequent detection using liquid chromatography and m

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27

Pocurull, Aixalà Eva. "Extracció en fase sòlida aplicada a la determinació de compostos fenòlics." Doctoral thesis, Universitat Rovira i Virgili, 1996. http://hdl.handle.net/10803/9052.

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28

Bratkowska, Dominika. "Development and application of new polymeric materials for sorptive extraction techniques." Doctoral thesis, Universitat Rovira i Virgili, 2011. http://hdl.handle.net/10803/63173.

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El desenvolupament de diferents materials per a les tècniques d’extracció mitjançant processos de sorció és una àrea en continua expansió; no obstant, l’extracció d’anàlits polars encara és un tema que requereix més investigació. En aquesta Tesi s’han desenvolupa nous materials que reuneixen de selectivitat i/o capacitat característiques per a extreure contaminants orgànics polars en mostres aquoses. La primera part descriu el desenvolupament de nous materials polimèrics que milloren la capacitat i selectivitat de l’extracció en fase solida, i hi inclau els polímers altament entrecreuats amb c

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29

Yavuz, Merve. "Investigation Of Occurrence And Fate Of Biocides In Wastewater Treatment Plants And Surface Waters." Master's thesis, METU, 2013. http://etd.lib.metu.edu.tr/upload/12615634/index.pdf.

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Biocides are widely used as a preservative or as an antiseptic agent in consumer care products such as toothpaste, mouthwash, and soaps, as well as in household cleaners and even in textiles due to their high antimicrobial effectiveness. The usage of this compounds results in discharge to wastewater treatment plants and so into surface waters. Their existence in the environment is of importance due to their negative effects on aquatic environment microorganisms and human health in terms of occurrence in surface waters and their fate in wastewater treatment plants. In this scope, this study foc

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30

Hroncová, Michala. "Studium dostupnosti antibiotik v půdě." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2020. http://www.nusl.cz/ntk/nusl-432994.

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The diploma thesis is focused on the determination of tetracyclines, sulfonamides and fluoroquinolones from soil. Antibiotics such as tetracycline, chlortetracycline, oxytetracycline. ciprofloxacin, trimethoprim, sulfamethaxazole and sulfadiazin were selected due to frequent use in veterinary medicine. Due to the fact that the soil is a complex matrix and contains many components that can interfere with the detection signal of analytes, it was necessary to use the MAX column in the SPE method, which removes fulvic aned humic acid from analytes and the HLB column Final analysis of the analytes

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Anumol, Tarun, Sylvain Merel, Bradley Clarke, and Shane Snyder. "Ultra high performance liquid chromatography tandem mass spectrometry for rapid analysis of trace organic contaminants in water." Chemistry Central, 2013. http://hdl.handle.net/10150/610118.

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BACKGROUND:The widespread utilization of organic compounds in modern society and their dispersion through wastewater have resulted in extensive contamination of source and drinking waters. The vast majority of these compounds are not regulated in wastewater outfalls or in drinking water while trace amounts of certain compounds can impact aquatic wildlife. Hence it is prudent to monitor these contaminants in water sources until sufficient toxicological data relevant to humans becomes available. A method was developed for the analysis of 36 trace organic contaminants (TOrCs) including pharmaceut

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32

Gaubaitė, Giedrė. "Buspirono ir fluoksetino ekstrakcijos iš kraujo plazmos tinkamiausių sąlygų nustatymas, medžiagų koncentraciją įvertinant efektyviosios skysčių chromatografijos metodu." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2014. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2014~D_20140618_220002-28969.

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Tyrimo objektas – kraujo plazma su vaistinių medžiagų mišiniu (buspirono hidrochloridu ir fluoksetino hidrochloridu). Šio tyrimo tikslas – nustatyti tinkamiausias ekstrakcijos sąlygas, reikalingas vaistų mišinio (buspirono ir fluoksetino) išskyrimui iš kraujo plazmos bei pritaikyti efektyviosios skysčių chromatografijos metodiką vaistų mišinio veikliųjų junginių identifikavimui ir kiekio nustatymui. Darbo uždaviniai buvo pritaikyti ir validuoti efektyviosios skysčių chromatografijos metodiką; išskirti buspirono ir fluoksetino vaistų mišinį iš kraujo plazmos skysčių – skysčių (SSE) ir kietafazė

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Arrambide, Cruz Carlos. "Méthodologies de synthèse de résines formo-phénoliques chélatantes : vers une extraction solide-liquide optimisée des métaux stratégiques." Thesis, Montpellier, 2017. http://www.theses.fr/2017MONTT169.

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L’extraction d’éléments d’intérêt (terres rares, métaux lourds, métaux de transition, radionucléides) de de minerais conventionnels ou non conventionnels (mines urbaines) et d’effluents industriel ou nucléaire est un enjeu majeure dans les procédés d’extraction, de recyclage et/ou de décontamination.Un grand nombre de solides organiques et inorganiques, chélatants ou échangeurs d’ions, ont été développés pour un tri ionique sélectif par procédé solide/liquide.L’introduction covalente de ligands spécifiques dans le squelette de la résine permet d’augmenter la sélectivité vis-à-vis d’une cible m

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Vasconcelos, Géssica Adriana. "Estendendo a caracterização dos compostos nitrogenados em resíduo de vácuo por FT-ICR MS." Universidade Federal de Goiás, 2016. http://repositorio.bc.ufg.br/tede/handle/tede/5952.

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Submitted by Cláudia Bueno (claudiamoura18@gmail.com) on 2016-08-17T21:37:32Z No. of bitstreams: 2 Dissertação - Géssica Adriana Vasconcelos - 2016.pdf: 2159448 bytes, checksum: a3e5f1ad74eff4a8b0472438d2a2bbf0 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e (MD5)<br>Approved for entry into archive by Cláudia Bueno (claudiamoura18@gmail.com) on 2016-08-17T21:39:28Z (GMT) No. of bitstreams: 2 Dissertação - Géssica Adriana Vasconcelos - 2016.pdf: 2159448 bytes, checksum: a3e5f1ad74eff4a8b0472438d2a2bbf0 (MD5) license_rdf: 0 bytes, checksum: d41d8cd98f00b204e9800998ecf8427e

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Sartoratto, Adilson. "Desenvolvimentos metodologicos em microextração em fase solida acoplada a cromatografias gasosa e liquida." [s.n.], 2006. http://repositorio.unicamp.br/jspui/handle/REPOSIP/250204.

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Orientador: Fabio Augusto<br>Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Quimica<br>Made available in DSpace on 2018-08-08T00:55:46Z (GMT). No. of bitstreams: 1 Sartoratto_Adilson_D.pdf: 1221656 bytes, checksum: f0ebb01e44d95590f9bbda739169bb32 (MD5) Previous issue date: 2006<br>Resumo: O trabalho que teve como objetivo desenvolver metodologias em Microextração em Fase Sólida para utilização em cromatografia líquida e gasosa será apresentado em dois capítulos: no primeiro capítulo a análise de pesticidas organofosforados (OPP) em amostras aquosas e infusão de plantas f

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Joshi, Manishkumar Dilipkumar. "Synthesis of New Classes of Ionic Liquids and Polymeric Ionic Liquids and their Applications in Microextraction Techniques." University of Toledo / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1372871956.

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Chirita, Raluca-Ioana. "Développement de nouvelles méthodes séparatives compatibles avec une détection par spectrométrie de masse et par électrochimie pour l'analyse de traces de catécholamines et molécules apparentées." Thesis, Orléans, 2009. http://www.theses.fr/2009ORLE2043/document.

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Les catécholamines et les indolamines font partie de la famille des neurotransmetteurs. Un déséquilibre dans leur concentration peut être associé à différentes maladies telles les maladies de Parkinson et Alzheimer, la dépression ou la schizophrénie. C’est pourquoi le développement de méthodes de dosage spécifiques et très sensibles du fait de leurs très faibles teneurs dans les fluides biologiques est nécessaire. Dans un premier temps nous avons développé une méthode chromatographique en appariement d’ions (IP-LC) utilisant des colonnes C18 de nouvelle génération (monolithique et « fused core

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AlHaddad, Nancy. "Synthèse de nouvelles entités complexantes à base de calix[4]pyrrole pour la décontamination des milieux aquatiques en radionucléides naturels." Thesis, Littoral, 2020. https://documents.univ-littoral.fr/access/content/group/50b76a52-4e4b-4ade-a198-f84bc4e1bc3c/BULCO/Th%C3%A8ses/Toxicologie/Version_finale_These_Nancy_AlHaddad.pdf.

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Les radionucléides se retrouvent naturellement dans l'air, le sol, et l'eau et génère une radioactivité de l'environnement. Suite aux activités anthropiques récentes telle que l'extraction d'uranium ou la production de pétrole et de gaz naturel, des quantités plus importantes de radionucléides naturels ont été émises et induisent un risque pour la santé humaine. L'une des voies les plus importantes de contamination humaine aux radionucléides, en dehors de l'inhalation, passe par une contamination de l'eau résultant de l'hydrosolubilité importante de certains sels de radionucléides. De fait, de

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Adorno, Maria Angela Tallarico. "Desenvolvimento de métodos de extração e determinação de bifenilas policloradas por cromatografia gasosa e detector de captura de elétrons em óleo Ascarel, reator anaeróbio e solo." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/18/18138/tde-27082014-104138/.

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Bifenilas policloradas (PCBs) são componentes de óleo ascarel, usado extensamente (no Brasil até os anos 80) como isolante em transformadores de energia devido às suas propriedades físico-químicas como estabilidade térmica e alta constante dielétrica. Apesar de ter sido proibido em todo o mundo devido à alta toxicidade dos PCBs presentes em sua composição, ainda resta grande quantidade de ascarel em circulação como resíduo \"passivo\" e resultante de contaminação em trocas dos fluidos dos transformadores, além de vazamentos. A principal forma de eliminação é por incineração, que, além de ser u

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Faria, Leonardo Jardim da Silva. "Avaliação de diferentes sorventes na extração em fase solida de pesticidas em agua : desenvolvimento e validação de metodologia." [s.n.], 2004. http://repositorio.unicamp.br/jspui/handle/REPOSIP/250506.

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Orientador: Isabel Cristina Sales Fontes Jardim<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Quimica<br>Made available in DSpace on 2018-08-04T03:19:20Z (GMT). No. of bitstreams: 1 Faria_LeonardoJardimdaSilva_M.pdf: 547743 bytes, checksum: c807d29f792ecf6c57e17ca59816fdfe (MD5) Previous issue date: 2004<br>Mestrado<br>Quimica Analitica<br>Mestre em Química

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Cruz, Alessandro de Carvalho. "Desenvolvimento de metodologia analitica para determinação de codeina em plasma humano utilizando extração solido-liquido "on-line" acoplado ao HPLC-MS/MS." [s.n.], 2010. http://repositorio.unicamp.br/jspui/handle/REPOSIP/310118.

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Orientador: Jose Pedrazzolli Junior<br>Dissertação (mestrado) - Universidade Estadual de Campinas. Faculdade de Ciencias Medicas<br>Made available in DSpace on 2018-08-15T08:01:40Z (GMT). No. of bitstreams: 1 Cruz_AlessandrodeCarvalho_M.pdf: 6535924 bytes, checksum: 32e397fd65c63f6c293df90358e9eff3 (MD5) Previous issue date: 2010<br>Resumo: Neste trabalho, a codeína foi determinada em plasma humano, através de metodologia analítica baseada no acoplamento da extração sólido-líquido "online" HPLC-MS/MS por electrospray positivo. O método foi desenvolvido visando a injeção direta de amostras pl

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Rodrigues, Flavio Thihara. "Degradação de profenofós em solução aquosa e em ervilhas processadas por feixe de elétrons e a síntese de polímeros impressos para extração seletiva desse pesticida." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/85/85131/tde-22072015-092821/.

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Profenofós é um organofosforado empregado como inseticida e acaricida amplamente utilizado no Brasil para o controle de pragas de cebolas, milho, soja, café, tomate, algodão, feijão, batata e outros. A irradiação é um processo empregado em todo o mundo e recomendada por diversos órgãos de saúde para a conservação de alimentos. A radiação ionizante utiliza raios gama, raios X ou aceleradores de elétrons e tem sido aplicada para eliminar ou reduzir a ação de agentes patogênicos e contribuir para aumentar o tempo de estocagem de vários alimentos. Os objetivos desse trabalho foram: (a) avaliar a d

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Dvořáková, Petra. "Využití kapalinové chromatografie pro stanovení reziduí léčiv." Doctoral thesis, Vysoké učení technické v Brně. Fakulta chemická, 2012. http://www.nusl.cz/ntk/nusl-233349.

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This work is based on the occurrence of drug residues in the environment. This study is focused on the development and optimization methods for determination of selected drugs in the surface water, aquatic sediment and sewage sludge from waste water treatment plant. From the group of drugs were chosen antibiotics. Antibiotics presented in the environment can cause adverse effects including toxic effects, immunity disorders and indirect bioalteration effects. Sulfonamide antibiotics, which are used in the treatment of urinary and respiratory tract infections as well as in the treatment of other

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Alves, Claudete. "\"Análise de fármacos em fluidos biológicos empregando o acoplamento SPME-LC/MS\"." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/75/75132/tde-18042007-171857/.

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Os métodos convencionais para a determinação de fármacos em fluidos biológicos baseiam-se em técnicas cromatográficas e imunoquímicas. O tratamento prévio de amostras biológicas, o qual abrange as etapas de extração, pré-concentração e clean-up, tem sido requerido nas análises de fármacos, para aumentar a sensibilidade e seletividade analítica. No entanto, nos últimos anos, com o avanço das técnicas instrumentais, diversas técnicas têm sido avaliados para a análise de diferentes fármacos em fluidos biológicos, destacando-se entre elas a Microextração em Fase Sólida (SPME) e a Cromatografia L

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Chaves, Kélen Siqueira. "Determinação dos desreguladores endócrinos bisfenol-A, b-estradiol, 17 a-etinilestradiol e estrona no rio Paraíba do Sul." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/97/97131/tde-24032016-090046/.

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O Rio Paraíba do Sul é um dos mais importantes mananciais da região sudeste, mas devido ao aumento da população e ao crescimento industrial da região, o rio vem sofrendo grandes alterações de natureza antropológica muito em parte devido a elevada carga de descarte de esgoto doméstico e industrial. Assim, é de se esperar, que o rio receba grande concentração de contaminantes tanto em matéria orgânica como também outros contaminantes, como os microcontaminantes. Dentre esses compostos se incluem os fármacos, produtos de higiene pessoal, pesticidas e os Desreguladores Endócrinos (DEs), que é uma

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Salameh, Marichal. "A Comparative Analysis of Per- andPolyfluoroalkyl Substances (PFAS) and ExtractableOrganofluorine (EOF) Using Solid PhaseExtraction-Weak Anion Exchange and Ion PairExtraction in SerumMarichal SalamehSpring 2021Independent project." Thesis, Örebro universitet, Institutionen för naturvetenskap och teknik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-93422.

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Per- and polyfluorinated substances (PFAS) are compounds that consist of a carbon chainbackbone that is partially or entirely fluorinated, with an addition of a functional group. SomePFAS are known as persistent organic pollutants (POPs) and have therefore been drawing a lot ofattention as well as increased concerns. PFAS have been detected in humans, wildlife and theenvironment and some have exhibited toxic effects such as hepatotoxicity, immunotoxicity,reproductive toxicity and endocrine disruption as well as being persistent and bioaccumulative.Serum, plasma and whole blood have been used a

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Štefka, Michal. "Tenzidy v povrchových a odpadních vodách." Doctoral thesis, Vysoké učení technické v Brně. Fakulta chemická, 2017. http://www.nusl.cz/ntk/nusl-256558.

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This work is focused on the occurrence of surface-active substances in the environment. It deals with the development and optimization of methods for the determination of selected surfactants in samples from rivers and from influent and effluent of wastewater treatment plants. Representatives of anionic, nonionic and zwitterionic surfactants were selected as target compounds. Based on optimization of analytical methods and their pilot testing abroad on samples of surface water, the selection of analytes for the conditions in the Czech Republic were corrected and operatively expanded. For the f

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Lindegårdh, Niklas. "Development of Field-adapted Analytical Methods for the Determination of New Antimalarial Drugs in Biological Fluids." Doctoral thesis, Uppsala University, Analytical Chemistry, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-3346.

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<p>This thesis deals with the development of analytical methods for the determination of new antimalarial drugs in biological fluids. The goal was to develop methods that facilitate clinical studies performed in the field, such as capillary blood sampling onto sampling paper.</p><p>Methods for the determination of atovaquone (ATQ) in plasma, whole blood and capillary blood applied onto sampling paper were developed and validated. </p><p>Automated solid-phase extraction (SPE) and liquid chromatography (LC) with UV absorbance detection was used to quantify ATQ. Venous blood contained higher leve

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Landová, Pavlína. "Stanovení makrolidů v odpadních vodách v průběhu technologií aplikovaných na čistírnách odpadních vod." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2016. http://www.nusl.cz/ntk/nusl-240804.

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Diploma thesis is focused on determination of macrolide antibiotics in wastewater. Environmental contamination with drugs currently represents a major problem. To determine the level of contamination is necessary to develop the appropriate analytical techniques. From the group of macrolide antibiotics were selected four representatives: erythromycin, clarithromycin, azithromycin and roxithromycin due to their frequent use in Czech Republic. For their isolation from wastewater was selected solid phase extraction and for analysis high performance liquid chromatography with mass spectrometric det

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Römsing, Susanne. "Development and Validation of Bioanalytical Methods : Application to Melatonin and Selected Anti-Infective Drugs." Doctoral thesis, Uppsala universitet, Analytisk kemi, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-131519.

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This thesis describes bioanalytical methods for measuring melatonin and some anti-infective drugs in biological fluids. Solid-phase extraction (SPE) or protein precipitation was used for enrichment and purification of the analytes and Liquid Chromatography (LC) was used to analyze the samples. Developed methods were validated according to international guidelines. Melatonin is a hormone secreted by the pineal gland with a robust circadian rhythm. Bioanalytical methods for determination of melatonin in plasma and saliva have been developed which were used for monitoring melatonin levels in volu

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