Academic literature on the topic 'Paper chromatography'

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Journal articles on the topic "Paper chromatography"

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Ochiai, Bungo, Seiya Koseki, and Yoshimasa Matsumura. "Phenylcarbamate-Modified Paper for Paper Chromatographic Analysis of Hydrophobic Compounds." Technologies 11, no. 1 (December 20, 2022): 1. http://dx.doi.org/10.3390/technologies11010001.

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Paper chromatography is a low-cost and facile analytical method traditionally used to analyze hydrophilic substances. For the application to substances with lower polarity, we prepared a stationary phase based on filter paper modified with phenyl isocyanate (PI-FP), bearing phenyl carbamate moieties for hydrophobic, π-π, and electrostatic interactions. The preparation and chromatographic methods were established by selecting papers, comparing different chemical structures, optimizing the modification procedure, investigating eluents, and quantitatively parameterizing the separation behavior based on the character of the analytes. PI-FP exhibited better separation performance than esterified FPs and enabled chromatographic analysis of various dyes with both positive and negative clogP (calculated water-octanol partition coefficient). We also demonstrated an application of this system for a preparative separation of dyes using thread-like paper modified with PI.
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B.M, Dr Khalid. "THIN LAYER CHROMATOGRAPHY AND PAPER CHROMATOGRAPHY: AN EVENT REPORT." Avishkara 01, no. 01 (2022): 24–25. http://dx.doi.org/10.56804/avishkara.2022.1108.

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Whelan, William J. "The Advent of Paper Chromatography." FASEB Journal 9, no. 2 (February 1995): 287–88. http://dx.doi.org/10.1096/fasebj.9.2.7781933.

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Sherma, Joseph. "Thin-layer and paper chromatography." Analytical Chemistry 60, no. 12 (June 15, 1988): 74–86. http://dx.doi.org/10.1021/ac00163a005.

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McCullough, Thomas, and Walter Rocabado. "Combined ascending-descending paper chromatography." Journal of Chemical Education 69, no. 12 (December 1992): 995. http://dx.doi.org/10.1021/ed069p995.

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Sherma, Joseph. "Thin-layer and paper chromatography." Analytical Chemistry 58, no. 5 (April 1986): 69–81. http://dx.doi.org/10.1021/ac00296a007.

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Behaj, Valbona, JaimeLee Iolani Cohen, and Robert Engel. "POLYCATIONIC MODIFIED PAPER FOR CHROMATOGRAPHY." Analytical Letters 35, no. 10 (August 29, 2002): 1715–20. http://dx.doi.org/10.1081/al-120013050.

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Ettre, L. S. "The predawn of paper chromatography." Chromatographia 54, no. 5-6 (September 2001): 409–14. http://dx.doi.org/10.1007/bf02492694.

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JANOUŠEK, J. "Paper Chromatography of Disperse Dyes." Journal of the Society of Dyers and Colourists 73, no. 7 (October 22, 2008): 328. http://dx.doi.org/10.1111/j.1478-4408.1957.tb02206.x.

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Brown, J. C. "Paper Chromatography of Synthetic Dyes." Journal of the Society of Dyers and Colourists 76, no. 9 (October 22, 2008): 536–42. http://dx.doi.org/10.1111/j.1478-4408.1960.tb02395.x.

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Dissertations / Theses on the topic "Paper chromatography"

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Gurnagul, N. (Norayr). "Some effects of relative humidity on the porous structure of paper." Thesis, McGill University, 1985. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=74013.

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Passos, Rafaela Fernanda Carvalhal. "Desenvolvimento de dispositivos eletroquímicos descartáveis para análises rápidas." [s.n.], 2010. http://repositorio.unicamp.br/jspui/handle/REPOSIP/248392.

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Orientador: Lauro Tatsuo Kubota
Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Química
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Resumo: Este trabalho apresenta o esforço dispendido na construção e caracterização de transdutores eletroquímicos sobre poliéster e papel, e também demonstra o emprego destas células eletroquímicas descartáveis no desenvolvimento de um biossensor para análises rápidas de salicilato em sangue, bem como a criação de um dispositivo de separação associado à detecção eletroquímica em papel. Cada célula eletroquímica é composta por um conjunto de três eletrodos de filmes finos construídos em ouro sobre poliéster ou papel cromatográfico por meio das técnicas de sputtering e electron-beam, respectivamente. Foi realizada a caracterização voltamétrica dos sistemas eletródicos empregando sondas redox como hexacianoferrato(II) de potássio, hexacianoferrato(III) de potássio e ácido ferrocenomonocarboxílico em meio eletrolítico, a fim de verificar a eletroatividade dos mesmos. Foi possível verificar que mesmo apresentando maior área eletroativa, os eletrodos de filmes finos construídos sobre papel apresentam uma menor densidade de corrente para as sondas redox em comparação com a célula eletroquímica construída em poliéster. Isto se deve à retenção das espécies eletroativas na fibra de celulose, fato que diminui a disponibilidade da espécie na superfície eletródica. Foi desenvolvido um biossensor amperométrico para a determinação de salicilato em sangue. O biossensor se baseia no emprego da enzima Salicilato hidroxilase imobilizada sobre a célula eletroquímica plástica. As condições experimentais otimizadas consistem em utilizar uma solução eletrolítica de tampão fosfato em pH 7,6 com 0,5 mmol L de NADH e 300 mV vs. Au como potencial aplicado durante as medidas. O biossensor apresentou adequada sensibilidade (97,4 nA/mmol L de salicilato) e faixa linear de resposta para o analito (1,25 10 to 1,0 10 mol L). O desempenho do biossensor foi verificado na determinação de salicilato em amostras de sangue dopadas com o analito e os resultados foram estatisticamente equivalentes àqueles obtidos com o método espectrofotométrico de Trinder em um nível de confiança de 95%. O dispositivo de separação cromatográfica em papel associado à detecção eletroquímica foi desenvolvido empregando a célula eletroquímica plástica e a célula eletroquímica sobre papel. O desempenho dos dispositivos foi avaliado na separação e quantificação de ácido úrico e áscórbico presentes em mistura. O método desenvolvido é uma alternativa para a determinação de compostos eletroativos em que o baixo custo e a simplicidade são essenciais
Abstract: This paper presents the efforts to the construction and characterization of electrochemical transducers on polyester and paper, and also demonstrates the use of these disposable electrochemical cells in the development of a biosensor for rapid analysis of salicylate in blood as well as the creation of a separation device associated electrochemical detection on paper. Each electrochemical cell consists of a set of three electrodes made of gold thin films on polyester or chromatographic paper using sputtering and electron-beam techniques, respectively. The electrochemical characterization of the systems with redox probes as potassium hexacyanoferrate(II), potassium hexacyanoferrate(III) and ferrocene monocarboxylic acid was performed in the electrolyte solution in order to evaluate the electroactivity of them. It was verified that even with higher electroactive area, the electrodes of thin films built on paper have a lower current density for the redox probes in comparison with the electrochemical cell constructed on polyester. This is due to retention of electroactive species in the cellulose fiber, a fact that reduces the availability of those species on the transducer surface. We developed an amperometric biosensor for the determination of salicylate in blood. The biosensor is based on the use of the salicylate hydroxylase enzyme immobilized on plastic electrochemical cell. The determined optimized experimental conditions are: an electrolyte solution of phosphate buffer at pH 7.6 with 0.5 mmol L of NADH and 300 mV vs. Au as the applied potential during the measurements. The biosensor showed adequate sensitivity (97.4 nA / mmol L salicylate) and linear response range for the analyte (1.25 10 to 1.0 10 mol L). The performance of the biosensor was found in the determination of salicylate in blood samples spiked with the analyte and the results were statistically equivalent to those obtained with the Trinder¿s spectrophotometric method, with a 95% confidence level. Prototypes of microfluidic paper-based separation devices with amperometric detection were developed and evaluated. The chromatographic separation on paper associated with electrochemical detection was developed using the plastic electrochemical cell and the gold electrochemical cell on paper. The performance of both devices was evaluated for separation and quantification of uric acid and ascorbic acid presented in the mixtures. The method is an alternative for the determination of electroactive compounds when low cost and simplicity are essential
Doutorado
Quimica Analitica
Doutor em Ciências
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Haj-Mahmoud, Qasem M. (Qasem Mohammed). "Pyrolysis Capillary Chromatography of Refuse-Derived Fuel and Aquatic Fulvic Acids." Thesis, University of North Texas, 1989. https://digital.library.unt.edu/ark:/67531/metadc331124/.

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Pyrolysis-capillary gas chromatography combined with FID, ECD and MS detection were used to characterize refuse-derived fuel and aquatic fulvic acids. Different pyrolysis methods and programs were evaluated. Pyrolysis temperatures of 700-800°C produced the strongest signal for organics present in RDF and fulvic acid. Cellulose and fatty acids pyrolyzates were identifiable by GC-MS following preparative pyrolysis fractionation. At organic chloride content of 0.023%, only three halogenated compounds were detected in the GC-MS of the fractions. None of the priority pollutants were detected at lower detection limit of 0.72 to 24 mg/ kg RDF. Selective solvent extraction improves the reproduciblities of the technique and allows the detection of polymeric structures. Pyrograms of polyvinyl chloride and regular typing paper showed some common peaks that are present in the RDF pyrogram. About 65% of the peaks in the RDF pyrogram might be of paper origin. The organic chloride content of the RDF was evaluated by ion chromatography of the trapped pyrolyzates in 2% NaOH trap and it was found to be 221 mg Cl/ kg dry RDF. Pyrolysis conditions and temperature programs for FA were systematically evaluated. Samples included purified FA, methylated FA and HPLC separated fractions. Characteristic pyrograms were developed. Profiles of benzene, toluene, phenol, m-cresol and biphenyl from FA were evaluated. The production of phenol was the largest at 800°C, at concentration of 1.61 mg per gram of FA pyrolyzed. The profiles of benzene and toluene followed the same pathways. Both pyrolyzates had at least two precursors. HPLC fractions of FA showed some regular retention patterns characteristic of polymeric material. DL-proline, seriene and vanillic acid pyrograms showed some peaks with the same retention times as those in FA pyrogram under the same conditions. A reproducibility of 6% relative standard deviation was achieved in the pyrolysis of RDF and 0.91% in the case of FA.
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FURLAN, NATALIE S. "Estudos sobre a recentidade de documentos utilizando-se a tecnica de cromatografia a gas acoplada a espectrometria de massas (GC-MS)." reponame:Repositório Institucional do IPEN, 2008. http://repositorio.ipen.br:8080/xmlui/handle/123456789/9358.

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Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Dissertacao (Mestrado)
IPEN/D
Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP
FAPESP:05/58301-0
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Šimková, Martina. "Příspěvek k diagnostice výkonových olejových transformátorů." Doctoral thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2010. http://www.nusl.cz/ntk/nusl-233914.

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Halder, Dibyadeep. "Toxicity of opal Australian paper weak black liquors towards actinobacillus succinogenes 130Z." Thesis, Federation University Australia, 2022. http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/184110.

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The objective of this study was to gain a better understanding of Opal Australian Paper’s (AP’s) waste streams as a potential substrate for biomanufacturing. Three low-value process streams were included in this study: Continuous Kraft Mill (CKM) weak black liquor (WBL), Neutral Sulphite Semi-Chemical (NSSC) WBL and WBL extracted from NSSC clean-pulp (CP). The primary focus of the study was to determine the chemical composition and extent of toxicity of these WBLs towards Actinobacillus succinogenes 130Z. This genetically engineered bacterium can produce a valuable platform chemical, succinic acid, using various carbohydrate sources. This project sought to increase knowledge of AP’s WBL and its suitability as a biomanufacturing substrate. Literature has been reviewed on various pre-treatment pathways for this waste stream, A. succinogenes 130Z and its effectiveness on producing succinic acid, and the analytical techniques that have been used to answer the project objectives. The effectiveness of pre-treating the NSSC and CP WBLs was measured using the following characteristics: (a) the colour content (specific absorbance) using UV-Vis spectroscopy, (b) indicative yields of several organic constituents through pyrolysis-gas chromatography-mass spectroscopy, (c) the atomic H/C and S/C ratios using an elemental analysis and (d) toxicity of the samples using a combination of semi-quantitative (plating trials) and quantitative (determination of minimum bactericidal concentration) techniques. The impact of an additional pre-treatment step of granular activated carbon for NSSC WBL was also researched here. InfraRed spectroscopy and toxicity analysis helped to conclude that CKM WBL is extremely toxic to Actinobacillus succinogenes 130Z and contained negligible amounts of residual sugar units. Characterising the NSSC and CP WBLs at the molecular level revealed the untreated WBLs are rich in lignin-derived methoxyphenols (up to 160 mg/kg) and contained low concentrations of elemental sulphur (up to approx. 1 mg/kg). Infra-red spectroscopy and gas chromatography indicated that the fermentable sugars in the WBLs were very low (< 1.2 mg/kg) even after pre-treatment. Both methoxyphenols and sulphur are known to be toxic to many bacteria and A. succinogenes 130Z could not tolerate more than 0.45 mg/ml (db, dry basis) and 0.78 mg/ml (db) of NSSC and CP WBLs respectively. Employing Amberlite® XAD7HP resins to pre-treat the NSSC and CP WBLs reduced their toxicity 2- to 5-fold, enabling the bacterium to survive in about 2.5 mg/ml (db) and 1 mg/ml (db) of NSSC and CP WBLs respectively. One possible reason for this is the significant reduction in lignin content afforded by this pre-treatment technique. These results conclude that AP’s WBLs are toxic and need to undergo pre-treatment prior to utilisation as a substrate for succinic acid production via fermentation.
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Halder, Dibyadeep. "Toxicity of opal Australian paper weak black liquors towards actinobacillus succinogenes 130Z." Thesis, Federation University Australia, 2022. http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/183622.

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The objective of this study was to gain a better understanding of Opal Australian Paper’s (AP’s) waste streams as a potential substrate for biomanufacturing. Three low-value process streams were included in this study: Continuous Kraft Mill (CKM) weak black liquor (WBL), Neutral Sulphite Semi-Chemical (NSSC) WBL and WBL extracted from NSSC clean-pulp (CP). The primary focus of the study was to determine the chemical composition and extent of toxicity of these WBLs towards Actinobacillus succinogenes 130Z. This genetically engineered bacterium can produce a valuable platform chemical, succinic acid, using various carbohydrate sources. This project sought to increase knowledge of AP’s WBL and its suitability as a biomanufacturing substrate. Literature has been reviewed on various pre-treatment pathways for this waste stream, A. succinogenes 130Z and its effectiveness on producing succinic acid, and the analytical techniques that have been used to answer the project objectives. The effectiveness of pre-treating the NSSC and CP WBLs was measured using the following characteristics: (a) the colour content (specific absorbance) using UV-Vis spectroscopy, (b) indicative yields of several organic constituents through pyrolysis-gas chromatography-mass spectroscopy, (c) the atomic H/C and S/C ratios using an elemental analysis and (d) toxicity of the samples using a combination of semi-quantitative (plating trials) and quantitative (determination of minimum bactericidal concentration) techniques. The impact of an additional pre-treatment step of granular activated carbon for NSSC WBL was also researched here. InfraRed spectroscopy and toxicity analysis helped to conclude that CKM WBL is extremely toxic to Actinobacillus succinogenes 130Z and contained negligible amounts of residual sugar units. Characterising the NSSC and CP WBLs at the molecular level revealed the untreated WBLs are rich in lignin-derived methoxyphenols (up to 160 mg/kg) and contained low concentrations of elemental sulphur (up to approx. 1 mg/kg). Infra-red spectroscopy and gas chromatography indicated that the fermentable sugars in the WBLs were very low (< 1.2 mg/kg) even after pre-treatment. Both methoxyphenols and sulphur are known to be toxic to many bacteria and A. succinogenes 130Z could not tolerate more than 0.45 mg/ml (db, dry basis) and 0.78 mg/ml (db) of NSSC and CP WBLs respectively. Employing Amberlite® XAD7HP resins to pre-treat the NSSC and CP WBLs reduced their toxicity 2- to 5-fold, enabling the bacterium to survive in about 2.5 mg/ml (db) and 1 mg/ml (db) of NSSC and CP WBLs respectively. One possible reason for this is the significant reduction in lignin content afforded by this pre-treatment technique. These results conclude that AP’s WBLs are toxic and need to undergo pre-treatment prior to utilisation as a substrate for succinic acid production via fermentation.
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Bindis, Michael P. "Students' misconceptions about intermolecular forces as investigated through paper chromatography experiments and the Molecular Attractions Concept Inventory." Miami University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=miami1379167186.

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Silva, Tânia Maria Bayer da. "Tecnologia de aplicação aérea de fungicidas na cultura do arroz irrigado." Universidade Federal de Santa Maria, 2009. http://repositorio.ufsm.br/handle/1/4986.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior
The objectives of the study were: a) evaluate the equipment and aerial application rates to maximizing the coverage and penetration of fungicides drops in the canopy leaf through Water-sensitive paper and chromatography b) measure the spectra of droplets generated by hydraulic nozzles, nozzles electrostatic and rotating atomisers disk c) evaluate the yield components: seed yield and ingenuity income d) evaluate the control of Cercospora oryzae in accordance with the devices tested. For the deposition of drops in three tiers with Water-sensitive papers review, the hydraulic nozzle equipment with 30 L.ha-1 had higher deposition in the upper third and medium. For the bottom third, the rotary atomizer disks in the rate of 15 L.ha-1 had higher penetration. With chromatography, the largest amount of product in the lower canopy was achieved through the electrostatic equipment with 10 L.ha-1. For the control of Cercospora oryzae the data were not consistent, because the treatments did not differ from the witness. For weight and grain yield there was no difference among treatments. For ingenuity income, the weight of grain was obtained using the hydraulic equipment Nozzle 20L.ha-1. The penetration and density were evaluated in relation to rates and equipment through contrasts. Most treatments showed differences between the equipment and rates.
Os objetivos dos trabalhos foram: a) Avaliar equipamentos de aplicação aérea e taxas de aplicação para maximização da cobertura e penetração de gotas de fungicidas no dossel foliar através de papel hidrossensível e cromatografia; b) avaliar os espectros de gotas gerados por bicos hidráulicos, bicos eletrostáticos e atomizadores rotativos de disco; c) avaliar os componentes de rendimento: produtividade de grãos e rendimento de engenho; e d) avaliar o controle de Cercospora oryzae. Para condução do experimento foi utilizado 8 tratamentos divididos em 63 ha. Em cada área foi avaliada a cobertura e penetração através de papeis hidrossensiveis e análise cromatográfica. A deposição de gotas em três estratos com análise de papéis hidrossensíveis, o equipamento bico hidráulico com 30 L.ha-1 teve maior deposição no terço superior e médio. Para o terço inferior, o atomizador rotativo de discos na taxa de 15 L.ha-1 apresentou maior penetração. Com cromatografia, a maior quantidade de produto no estrato inferior foi conseguida através do equipamento Eletrostático com 10 L.ha-1. Para o controle de Cercospora oryzae, os dados não foram consistentes, pois os tratamentos não diferiram da testemunha. Não houve diferenças para peso de grãos e produtividade entre os tratamentos. No rendimento de engenho, o maior peso de grão inteiro foi obtido com a utilização do equipamento Bico hidráulico 20L.ha-1. A densidade e a penetração foram avaliadas em relação às taxas e aos equipamentos, através de contrastes. A maioria dos tratamentos evidenciou diferenças entre os equipamentos e as taxas.
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Dupont, Anne-Laurence. "Gelatine sizing of paper and its impact on the degradation of cellulose during aging a study using size-exclusion chromatography /." [S.l. : Amsterdam : s.n.] ; Universiteit van Amsterdam [Host], 2003. http://dare.uva.nl/document/68918.

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Books on the topic "Paper chromatography"

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Dupont, Anne-Laurence. Gelatine sizing of paper and its impact on the degradation of cellulose during aging: A study using size-exclusion chromatography. Amsterdam: Universiteit van Amsterdam, 2003.

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Barber, Jacqueline. Crime lab chemistry: Teacher's guide. Berkeley, CA: Great Explorations in Math and Science (GEMS), Lawrence Hall of Science, University of California, Berkeley, 1989.

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Barber, Jacqueline. Crime lab chemistry: Teacher's guide. Berkeley, CA: Lawrence Hall of Science, University of California, 1985.

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Barber, Jacqueline. Crime lab chemistry: Teacher's guide. Berkeley, CA: Lawrence Hall of Science, University of California, 1993.

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International, Conference on Biochemical Separations (2nd 1988 Keszthely Hungary). Program of the 2nd International Conference on Biochemical Separations, October 2-7, 1988, Keszthely, Hungary: Full papers & abstracts. Budapest, Hungary: MTESZ Biokémiai Egyesület, 1988.

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Inks, food colors, and papers. White Plains, N.Y: Cuisenaire Co. of America, 1993.

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Zweig, Gunter, and Joseph Sherma. Paper Chromatography. Elsevier Science & Technology Books, 2013.

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Durrum, Emmett L., Gunter Zweig, and Richard J. Block. Manual of Paper Chromatography and Paper Electrophoresis. Elsevier Science & Technology Books, 2016.

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Seakins, J. W. T., and Ivor Smith. Paper and Thin Layer Chromatography. Elsevier Science & Technology Books, 2013.

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Strange, Raymond Le, Gunter Zweig, and Richard J. Block. Paper Chromatography: A Laboratory Manual. Elsevier Science & Technology Books, 2013.

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Book chapters on the topic "Paper chromatography"

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Gooch, Jan W. "Paper Chromatography." In Encyclopedic Dictionary of Polymers, 516. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_8395.

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Jain, Aakanchha, Richa Jain, and Sourabh Jain. "Paper Chromatography of Carbohydrates." In Basic Techniques in Biochemistry, Microbiology and Molecular Biology, 263–64. New York, NY: Springer US, 2020. http://dx.doi.org/10.1007/978-1-4939-9861-6_60.

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Burgess, Helen D. "Gel Permeation Chromatography." In Historic Textile and Paper Materials, 363–76. Washington, DC: American Chemical Society, 1986. http://dx.doi.org/10.1021/ba-1986-0212.ch020.

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Pomeranz, Yeshajahu, and Clifton E. Meloan. "Paper and Thin-Layer Chromatography." In Food Analysis, 352–65. Boston, MA: Springer US, 1994. http://dx.doi.org/10.1007/978-1-4615-6998-5_22.

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Jain, Aakanchha, Richa Jain, and Sourabh Jain. "Paper Chromatography of Amino Acid." In Basic Techniques in Biochemistry, Microbiology and Molecular Biology, 259–61. New York, NY: Springer US, 2020. http://dx.doi.org/10.1007/978-1-4939-9861-6_59.

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Barrett, G. C. "Nondestructive Detection Methods in Paper and Thin Layer Chromatography." In Advances in Chromatography, 145–79. Boca Raton: CRC Press, 2021. http://dx.doi.org/10.1201/9781003209928-4.

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Walker, Cynthia, and Howard L. Needles. "Analysis of Natural Dyes on Wool Substrates Using Reverse-Phase High-Performance Liquid Chromatography." In Historic Textile and Paper Materials, 175–85. Washington, DC: American Chemical Society, 1986. http://dx.doi.org/10.1021/ba-1986-0212.ch009.

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Kaempfer, Ingrid. "Quality Control and Drug Effect. Technical Aspects of Electrophoresis, Paper and Thin-layer Chromatography, Column Chromatography." In Principles of Radiopharmacology, 207–16. Dordrecht: Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-4245-5_17.

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Hough, Leslie. "Analysis of Mixtures of Sugars by Paper and Cellulose Column Chromatography." In Methods of Biochemical Analysis, 205–42. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2006. http://dx.doi.org/10.1002/9780470110171.ch8.

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Bush, I. E. "The Paper Chromatography of Steroids and its Application to Assay Problems." In Ciba Foundation Symposium - Bioassay of Anterior Pituitary and Adrenocortical Hormones (Colloquia on Endocrinology, Vol. 5), 203–15. Chichester, UK: John Wiley & Sons, Ltd., 2008. http://dx.doi.org/10.1002/9780470718834.ch21.

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Conference papers on the topic "Paper chromatography"

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Yu, Wei W., and Ian M. White. "Paper SERS chromatography for detection of trace analytes in complex samples." In SPIE Defense, Security, and Sensing, edited by Augustus W. Fountain. SPIE, 2013. http://dx.doi.org/10.1117/12.2015553.

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Chen, Chung-Hsiang, and Che-Hsin Lin. "Mass spectrometry pesticide screening with paper-based microfluidic cassette for 2D paper chromatography and electrospray ionization." In 2017 19th International Conference on Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS). IEEE, 2017. http://dx.doi.org/10.1109/transducers.2017.7994339.

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Hori, F., and S. Uno. "Electrochemical Impedance Spectroscopy of Colloidal Gold Nanoparticles in Chromatography Paper for Immunochromatographic Assay." In 2014 International Conference on Solid State Devices and Materials. The Japan Society of Applied Physics, 2014. http://dx.doi.org/10.7567/ssdm.2014.ps-11-14.

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Cheng, Ming-Hsu, and Che-Hsin Lin. "Novel paper-based microfluidic cassette for 2D paper chromatography and paper spray mass spectrometry (PS-MS) for drug metabolism analysis in urine." In 2018 IEEE Micro Electro Mechanical Systems (MEMS). IEEE, 2018. http://dx.doi.org/10.1109/memsys.2018.8346786.

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Iwahara, S., M. Miki, and S. Uno. "Electrochemical Impedance Spectroscopy of Aqueous Solution in Chromatography Paper and Its Application to Immunochromatography." In 2013 International Conference on Solid State Devices and Materials. The Japan Society of Applied Physics, 2013. http://dx.doi.org/10.7567/ssdm.2013.ps-11-7.

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Miki, M., S. Iwahara, and S. Uno. "An Enzymatic Amperometric Glucose Sensor on CMOS Chip using Carbon Ink Electrode and Chromatography Paper." In 2013 International Conference on Solid State Devices and Materials. The Japan Society of Applied Physics, 2013. http://dx.doi.org/10.7567/ssdm.2013.ps-11-6.

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Liu Shiwang, Mao Jianwei, Huang Jun, Wu Yuanfeng, Zhu Suyan, Zhang Zhensong, Xiao gongninan, and You Yuru. "Mensurating quantum of the γ-aminobutyric acid in mulberry leaf and brown rice by paper chromatography." In 2011 International Conference on New Technology of Agricultural Engineering (ICAE). IEEE, 2011. http://dx.doi.org/10.1109/icae.2011.5943957.

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Prakash, Divya, S. Kumar, and Neeraj Tomar. "Uses of peroxide on the formation of chlorinated phenolics by gas chromatography technique in nonwood pulps to reduce toxicity in paper manufacturing." In INTERNATIONAL CONFERENCE ON CONDENSED MATTER AND APPLIED PHYSICS (ICC 2015): Proceeding of International Conference on Condensed Matter and Applied Physics. Author(s), 2016. http://dx.doi.org/10.1063/1.4946145.

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Wagner, Luke T., Niloofar Hashemi, and Nastaran Hashemi. "A Compact Versatile Microbial Fuel Cell From Paper." In ASME 2013 11th International Conference on Fuel Cell Science, Engineering and Technology collocated with the ASME 2013 Heat Transfer Summer Conference and the ASME 2013 7th International Conference on Energy Sustainability. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/fuelcell2013-18322.

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Abstract:
Microbial fuel cells (MFCs) have been a potential green energy source for a long time but one of the problems is that either the technology must be used on a large scale or special equipment have been necessary to keep the fuel cells running such as syringe pumps. Paper-based microbial fuel cells do not need to have a syringe pump to run and can run entirely by themselves when placed in contact with the fluids that are necessary for it to run. Paper-based microbial fuel cells are also more compact than traditional MFCs since the device doesn’t need any external equipment to run. The goal of this paper is to develop a microbial fuel cell that does not require a syringe pump to function. This is done by layering chromatography paper with wax design printed onto it. This restricts the fluids to a specific flow path allowing it to act like the tubes in a typical microbial fuel cell device by delivering the fluids to the chamber. The fluids are picked up by tabs that sit in the fluid and use capillary attraction to flow up the tab and into the device. The fluids are directed to the chambers where the chemical and biological processes take place. These flows are then directed out of the device so that they are taken to a waste container and out of the system. Our microliter scale paper-based microbial fuel cell creates a significant current that is sustained for a period of time and can be repeated. A paper-based microbial fuel cell also has a fast response time. These results mean that it could be possible for a set of paper-based microbial fuel cells to create a power density capable of powering small, low power circuits when used in series or parallel. In this paper, we discuss the fabrication and experimental results of our paper-based microbial fuel cell. Also there will be a discussion of how paper-based microbial fuels cells compare to the traditional microbial fuel cells and how they could be used in the future.
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Phan, Vinh Nguyen, Chun Yang, and Nam-Trung Nguyen. "Capillary Filling in Nanochannels." In ASME 2009 7th International Conference on Nanochannels, Microchannels, and Minichannels. ASMEDC, 2009. http://dx.doi.org/10.1115/icnmm2009-82049.

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Capillary filling is the key phenomenon in planar chromatography techniques such as paper chromatography and thin layer chromatography. While capillary filling in channels of micrometers scale are experimentally verified that obeys well to Washburn’s law, there is evident show that the speed of capillary filling in nanochannels is noticeable lower than described by Washburn’s formula. This paper describes a model for capillary filling phenomenon in nanochannel. Experiments on the filling of electrolytic and nonelectrolytic solutions in polymeric nanochannels were carried out. The filling processes were observed and recorded. Filling distances were measured, from which filling speeds were derived. Formation of air bubbles was also observed with some channel’s geometry. A mathematical model to calculate the electroviscous effect was established. This model shows that contribution of electroviscous effect in the reduction of filling speed is small. This result also agrees well with other previous theoretical works on the electroviscous effect. That means beside electroviscous effect, there are other phenomena that contribute in the reduction of capillary filling speed in nanochannel, such as air bubbles formation. Those phenomena need to be described qualitatively and quantitatively in order to understand more on the capillary filling in nanochannel.
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Reports on the topic "Paper chromatography"

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Nic Daeid, Niamh, Heather Doran, Lucina Hackman, and Pauline Mack. The Curse of the Burial Dagger Teacher Materials. University of Dundee, September 2021. http://dx.doi.org/10.20933/100001220.

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The Curse of the Burial Dagger is an interactive graphic novel murder mystery, created by the Leverhulme Research Centre for Forensic Science and digital story studio Fast Familiar. Players use maths, logic and critical reasoning skills to assist Susie uncover different types of forensic evidence and weigh up contrasting hypotheses. Can they uncover the events leading up to Lord Hamilton’s death and deduce how he died…before the curse strikes again? These documents are the Teacher/Group lead pack which contain additional resources including: • The Teacher/Group Lead Pack – Teacher walk through – Factsheet – What is Forensic Science? – Factsheet – What is a hypothesis? – Marzipan Calculation – Factsheet and activity – Fingerprint Analysis – Activity – Chromatography investigation • Printable completion certificate • Printable Note paper and fact-sheet
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