Academic literature on the topic 'Spectrophotometric method'

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Journal articles on the topic "Spectrophotometric method"

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Lestari, Ida, Peni Pujiastuti, and Yari Mukti Wibowo. "Komparasi Metode Titrimetri Dengan Spektrofotometri UV-Vis pada Analisis Chemical Oxygen Demand (COD) Output IPAL Domestik Berdasarkan Linieritas, Akurasi dan Presisi." JURNAL SAINS TEKNOLOGI & LINGKUNGAN 9, no. 4 (2023): 592–602. http://dx.doi.org/10.29303/jstl.v9i4.416.

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The method of a test must be evaluated and tested to ensure that the method is capable of producing valid data. So that validation needs to be done as a quality control that provides assurance that the measurements and results obtained are reliable. This study aims to determine the value and comparison of the values of linearity, accuracy, and precision of the titrimetric and spectrophotometric methods in COD analysis. Determination of the COD value for the titrimetric method was carried out by redox titration using a solution of Ferro Ammonium Sulphate (FAS). While the spectrophotometric meth
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Skripnikova, Tatyana A., Svetlana S. Lysova, Yuri E. Zevatskii, and Tatyana V. Artamonova. "ANALYTICAL WAVELENGTHS IN THE SPECTROPHOTOMETRIC INVESTIGATION OF EQUILIBRIA IN SOLUTIONS." Bulletin of the Saint Petersburg State Institute of Technology (Technical University) 68 (2024): 3–9. http://dx.doi.org/10.36807/1998-9849-2024-68-94-3-9.

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The review discusses approaches to determining the analytical wavelength in the spectrophotometric determination of thermodynamic equilibrium constants in solutions. Particular attention is paid to the use of the traditional spectrophotometric method and the method of concentration UV/Vis spectrophotometry, which has not yet been widely used
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Sandhyarani, K. "Spectrophotometric Method for Analysis of Valasartan." International Journal of Science and Research (IJSR) 10, no. 11 (2021): 660–62. https://doi.org/10.21275/sr211112125122.

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SAAD ANTAKLI, Raghad Kabbani, and And Rama Labban. "Analytical Spectrometric Study For Determining Dapagliflozin Propanediol Monohydrate Individually Or In Presence Of Metformin Hydrochloride In Tablets Formulation." JOURNAL OF ADVANCES IN CHEMISTRY 17 (September 10, 2020): 80–87. http://dx.doi.org/10.24297/jac.v17i.8812.

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First simple spectrophotometric method was developed and applied to determine Dapagliflozin Propanediol Monohydrate by Zero Spectrophotometry and First Derivative Spectrophotometric method for determining of Dapagliflozin Propanediol Monohydrate (DAPA) in the presence of Metformin Hydrochloride (MET). Zero spectrophotometric (ZS) was applied for the determination of (DAPA) at 223.5 nm. Linearity range was (2.61– 31.23) µg/mL. Regression analysis showed a good correlation coefficients R2 = 0.9989. The limit of detection (LOD) and limit of quantification (LOQ) were to be 0.569 µg/mL and 1.724 µg
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G., KoteshwarRao* R.VijayaVani M.Shiresha B.Vidya I.Santhosh K. Rajeswar Dutt and K. N. V. Rao. "A NEW METHOD DEVELOPMENT AND VALIDATION OF AXITINIB BULK AND PHARMACEUTICAL DOSAGE FORM BY USINGUV-VISIBLE SPECTROSCOPY AS PER ICH GUIDELINES." INDO AMERICAN JOURNAL OF PHARMACEUTICAL SCIENCES 05, no. 03 (2018): 1704–10. https://doi.org/10.5281/zenodo.1210043.

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The objective of the present work was to develop a simple, efficient and reproducible spectrophotometric method for the quantitative estimation of Axitinib drug in its active pharmaceutical ingredient (API) form. The developed UV-Visible spectrophotometric method for the quantitative estimation of drug –Axitinib measurement of absorption at a wavelength maximum (λmax) of 260 nm using methanol as diluents. The method was validated as per the ICH guidelines. The proposed method can be successfully applied for the estimation of Axitinib in pharmaceutical dosage forms.The linearity dy
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B. Mahendra, K. Harika Sundari, and T. Vimalakkannan. "Method developed for the determination of apixaban by using U.V. spectrophotometric." International Journal of Research In Pharmaceutical Chemistry and Analysis 1, no. 3 (2019): 83–87. http://dx.doi.org/10.33974/ijrpca.v1i3.115.

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The present work is aim to Develop UV spectrophotometry method for the estimation of Apixaban in its dosage forms. Analysed the marketed formulations for their reliability and accuracy and Performed the recovery studies for the developed UV spectrophotometric method. The developed method was validate for its accuracy precision reproducibility. On the basis of results the UV spectrophotometric method developed for the determination of Apixaban is found to be precise, accurate and cost effective. Hence this method can be used for routine analysis of Apixaban in bulk and pharmaceutical dosage for
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Shirkhedkar, Atul A., and Saurabh B. Ganorkar. "NOVEL ZERO ORDER UV-SPECTROPHOTOMETRIC AND FIRST ORDER DERIVATIVE UV-AUC METHODS FOR ESTIMATION OF ETOMIDATE IMPARTING HYDROTROPIC SOLUBLIZATION." INDIAN DRUGS 52, no. 04 (2015): 15–20. http://dx.doi.org/10.53879/id.52.04.10214.

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Simple, novel UV-spectrophotometric methods have been developed and validated for the estimation of etomidate imparting a hydrotropic solublization phenomenon. Etomidate is an imidazole derivative, approved as a short acting intravenous anesthetic having poor water solubility. As the UV-spectrophotometric estimation was not seen in any published literature, we have reported it here; zero order UV-spectrophotometry (Method I) and First Order Derivative UV-spectrophotometry (Method II) with the application of hydrotropy to counteract the poor water solubility of etomidate. The present research e
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Panda, Sagar S., and Ravi Kumar V.V. Bera. "HPTLC AND FIRST DERIVATIVE UV-SPECTROPHOTOMETRIC METHODS FOR ESTIMATION OF VILAZODONE IN PHARMACEUTICALS." Indian Drugs 60, no. 01 (2023): 61–66. http://dx.doi.org/10.53879/id.60.01.12718.

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A new HPTLC method and a sensitive UV spectrophotometric method were established for estimating vilazodone hydrochloride in its pharmaceutical formulations. An environment-friendly chromatographic mobile phase consisting of ethyl acetate: toluene: formic acid (5:4:1, V/V/V) along with ultraviolet densitometric detection at 240 nm using pre-coated silica gel plates was used. First derivative UV spectrophotometric determinations were performed using methanol as solvent, and amplitudes were measured for quantification purposes. Validation studies were compliant with ICH guidance. Vilazodone shows
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Priya, NAGAM Santhi, P. Siva Krishna, D. Amani, et al. "UV Spectrophotometric Method for Estimation of Voriconazole in Bulk Form." Journal of Drug Delivery and Therapeutics 13, no. 12 (2023): 177–82. http://dx.doi.org/10.22270/jddt.v13i12.6339.

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This study presents a validated UV spectrophotometric method for the precise estimation of voriconazole in bulk formulations. Voriconazole, an essential antifungal agent, demands accurate quantification for its pharmaceutical applications. The proposed method leverages the sensitivity of UV spectroscopy to determine voriconazole concentrations effectively.
 The method's validation adheres to regulatory guidelines, ensuring reliability and accuracy. Spectrophotometric analysis was performed within a specific wavelength range, demonstrating linearity, precision, accuracy, and robustness acr
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Lei, Yan Hong. "Spectrophotometric Method for the Assay of Aspirin." Applied Mechanics and Materials 602-605 (August 2014): 2097–100. http://dx.doi.org/10.4028/www.scientific.net/amm.602-605.2097.

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A selective method was developed for the determination of aspirin by Spectrophotometric method .The spectra (range: λ=200~320 nm) were processed. The linear ranges of aspirin was at 50.28 ~ 125.7μg • mL-1 .the aspirin showed good linear correlation.The ultraviolet spectrophotometry data of the samples were also used to evaluate the samples’ quantitative composition.It was shown that recovery of the method by standard addition method was respectively valued 102.06% for aspirin .The method was simple,reliable,accurate,reproducible with high sensitivity and selectivity.
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Dissertations / Theses on the topic "Spectrophotometric method"

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Коваленко, Катерина Вікторівна. "Practical application of spectrophotometric method in pharmaceutical analysis in Ukraine." Thesis, Київський національний університет технологій та дизайну, 2017. https://er.knutd.edu.ua/handle/123456789/7388.

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Maurer, Stephen Michael 1959. "An improved method for the spectrophotometric determination of equilibrium constants." Thesis, The University of Arizona, 1990. http://hdl.handle.net/10150/291393.

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An improved spectrophotometric method of determining equilibrium constants is introduced. The advantages offered by photodiode array spectrophotometer are exploited. The most important of these are the ability to precisely measure analyte absorbance at all wavelengths throughout the ultraviolet and visible spectral range and store the data in computer files. A spreadsheet program is used to assemble the spectral data into an organized array and calculate the most probable value of the equilibrium constant for the entire array. Linear least-squares analysis and weighting scheme are employed to
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Lindman, Elin. "A spectrophotometric method to analyze antibiotics in plasma: A validation study." Thesis, Uppsala universitet, Institutionen för kvinnors och barns hälsa, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-355556.

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Antibiotic resistance is one of the most serious medical problems in the world. To counteract the increase in antibiotic resistance, new rapid and effective analytical methods are needed. To effectively treat infections in critically ill patients, optimal antibiotic dosages are required. DrugLog® is an instrument that uses a spectrophotometric method to analyze antibiotics in plasma in the wavelength range 200-800 nm. The aim of this study was to do a method validation of the instrument DrugLog®.     The study material that was used was whole blood from healthy donor and routine citrate plasma
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Johnson, William. "A novel spectrophotometric/electrochemical method for the determination of total nitrogen as applied to fertilisers." Thesis, Teesside University, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.302724.

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Pozzi, Alessandra Cristina Soares. "Desenvolvimento de métodos espectrofotométricos de análise de flavonóides do \"maracujá\" (Passiflora alata e Passiflota edulis)." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/75/75132/tde-14092007-093423/.

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\"Maracujá\" é o nome popular de várias espécies, dentre as quais Passiflora edulis e Passiflora alata (Passifloraceae). Esta última é uma planta medicinal amplamente utilizada no Brasil devido às suas propriedades ansiolíticas e sedativas, sendo também a espécie oficial da Farmacopéia Brasileira. Porém, freqüentemente ocorre a sua substituição indevida por Passiflora edulis, espécie usada para o preparo de sucos. Há também a confusão com a Passiflora incarnata, espécie usada na Europa, mas que não se adapta bem ao clima brasileiro. Neste trabalho foi desenvolvido um método espectrofotométrico
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Rerolle, Victoire. "Development and deployment of an in situ sensor for seawater pH based on the spectrophotometric method." Thesis, University of Southampton, 2013. https://eprints.soton.ac.uk/359137/.

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The uptake of anthropogenic CO2 by the oceans since the onset of the industrial revolution is considered to be a serious challenge to marine ecosystems due to ensuing carbonate chemistry changes (ocean acidification). Furthermore, the CO2 uptake is reducing the ocean’s capacity to absorb future CO2 emissions. In order to follow the changes in the ocean’s carbonate system, high-quality analytical measurements with good spatial and temporal resolution are necessary. The spectrophotometric pH technique is now widely used and capable of the required high-quality measurements. Smaller and more rugg
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Астаніна, О. А., та Н. М. Великонська. "Вдосконалення методики визначення малих концентрацій цирконію та германію в металургійних об’єктах спектрофотометричним методом". Thesis, Видавництво СумДУ, 2010. http://essuir.sumdu.edu.ua/handle/123456789/13085.

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Gotardo, Mara Andréia [UNESP]. "Desenvolvimento de métodos para análise de medicamentos utilizando reflectância difusa e espectrofotometria." Universidade Estadual Paulista (UNESP), 2006. http://hdl.handle.net/11449/105738.

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Made available in DSpace on 2014-06-11T19:35:07Z (GMT). No. of bitstreams: 0 Previous issue date: 2006-09-20Bitstream added on 2014-06-13T21:07:15Z : No. of bitstreams: 1 gotardo_ma_dr_araiq.pdf: 948133 bytes, checksum: 414edaf8ae833739041194beb4696ec5 (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>Este trabalho propõe métodos por espectroscopia de reflectância difusa utilizando spot test para determinação de furosemida, hidroclorotiazida, propranolol e atenolol em formulações farmacêuticas e também um método espectrofotométrico no visível para determinação d
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Lacerda, Roseli Sengling. "Teores de lignina determinados através do método espectrofotométrico lignina solúvel em brometo de acetila de alguns cultivares de aveia." Universidade de São Paulo, 2001. http://www.teses.usp.br/teses/disponiveis/74/74131/tde-04072002-153418/.

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Para quantificar o teor de lignina em alguns cultivares de aveia, foi utilizado o método espectrofotométrico "lignina solúvel em brometo de acetila – LSBA", onde a lignina é solubilizada em uma solução a 25% de brometo de acetila em ácido acético glacial e em seguida sua absorbância lida a 280 nm; como padrão de referência foi utilizada a lignina extraída da aveia através de uma solução ácida de dioxana. A quantificação da lignina foi realizada em oito cultivares de aveia, nas frações planta inteira, caule e folha, em três estádios de maturidade (45, 55 e 65 dias de idade). Os resultados obt
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Gotardo, Mara Andréia. "Desenvolvimento de métodos para análise de medicamentos utilizando reflectância difusa e espectrofotometria /." Araraquara : [s.n.], 2006. http://hdl.handle.net/11449/105738.

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Orientador: Helena Redigolo Pezza<br>Banca: Massao Ionashiro<br>Banca: Matthieu Tubino<br>Banca: Fabio Rodrigo Piovezani Rocha<br>Banca: Ronaldo Censi Faria<br>Resumo: Este trabalho propõe métodos por espectroscopia de reflectância difusa utilizando spot test para determinação de furosemida, hidroclorotiazida, propranolol e atenolol em formulações farmacêuticas e também um método espectrofotométrico no visível para determinação de metildopa em formulações farmacêuticas. Os métodos reflectométricos foram baseados em reações em papel de filtro, utilizando p-dimetilaminocinamaldeído (PDAC) como r
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Books on the topic "Spectrophotometric method"

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Dufour, Annie. The measurement of growth of Thiobacillus ferrooxidans using a spectrophotometric method. Laurentian University, 1992.

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Reckhow, David A. A simple spectrophotometric method for the determination of THMs in drinking water. AWWA Research Foundation and American Water Works Association, 1992.

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Solomons, M. The spectrophotometric determination of silica in metallurgical-grade fluorspar laboratory method no. 14/42. Council for Mineral Technology, 1987.

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S, Görög. Ultraviolet-visible spectrophotometry in pharmaceutical analysis. CRC Press, 1995.

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L, Bashford C., and Harris D. A, eds. Spectrophotometry & spectrofluorimetry: A practical approach. IRL Press, 1987.

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Meloun, M. Computation of solution equilibria: A guide to methods in potentiometry, extraction, and spectrophotometry. Edited by Havel J and Högfeldt Erik 1924-. E. Horwood, 1988.

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G, Watson David. Pharmaceutical analysis: A textbook for pharmacy students and pharmaceutical chemists. 3rd ed. Elsevier Churchill Livingstone, 2012.

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Engelborghs, Yves, and Antonie J. W. G. Visser. Fluorescence spectroscopy and microscopy: Methods and protocols. Humana Press, 2014.

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Neugebauer, E. A. Methods for the determination of metals in wildlife tissues using various atomic absorption spectrophotometry techniques. Canadian Wildlife Service, 2000.

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Preoteasa, Eugen A. Atomic and nuclear surface analysis methods: A novel perspective for the characterization of dental composites. Nova Science Publishers Inc., 2011.

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Book chapters on the topic "Spectrophotometric method"

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Senthilkumar, M., N. Amaresan, and A. Sankaranarayanan. "Chitinase Assay by Spectrophotometric Method." In Springer Protocols Handbooks. Springer US, 2020. http://dx.doi.org/10.1007/978-1-0716-1080-0_57.

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Koistinen, Jaana, Mervi Sjöblom, and Kristian Spilling. "Total Nitrogen Determination by a Spectrophotometric Method." In Methods in Molecular Biology. Springer New York, 2019. http://dx.doi.org/10.1007/7651_2019_206.

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Bârzu, Octavian. "Measurement of Oxygen Consumption by the Spectrophotometric Oxyhemoglobin Method." In Methods of Biochemical Analysis. John Wiley & Sons, Inc., 2006. http://dx.doi.org/10.1002/9780470110515.ch5.

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Costello, J., and E. Al-Dabagh. "A New Rapid Spectrophotometric Method for Detection of Xanthinuria." In Urolithiasis and Related Clinical Research. Springer US, 1985. http://dx.doi.org/10.1007/978-1-4684-7272-1_146.

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Muhić-Šarac, Tidža. "Measurement of Polyphosphates in Meat Products by Spectrophotometric Method According Laboratory-Developed Method." In Traceability, Validation and Measurement Uncertainty in Chemistry: Vol. 3. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-20347-4_4.

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Palomäki, Henri, Jari Aromaa, Justin Salminen, and Mari Lundström. "The Spectrophotometric Method for Arsine Gas Analysis in Electrometallurgical Experiments." In Proceedings of the 63rd Conference of Metallurgists, COM 2024. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-67398-6_40.

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Gao, Ling, and Shouxin Ren. "Simultaneous Multicomponent Spectrophotometric Kinetic Determination by a Hybrid Intelligent Computing Method." In Artificial Intelligence and Computational Intelligence. Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-23881-9_46.

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Tomar, Sushil Kumar Singh, Abhas Asthana, and Joy Sarkarc. "A Novel Inhibitory Kinetic Spectrophotometric Method for the Determination of Famotidine." In Challenges and Opportunities for Innovation in India. CRC Press, 2024. https://doi.org/10.1201/9781003606260-58.

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Antognelli, Cinzia, Vincenzo Nicola Talesa, and Saverio Francesco Retta. "Spectrophotometric Method for Determining Glyoxalase 1 Activity in Cerebral Cavernous Malformation (CCM) Disease." In Methods in Molecular Biology. Springer US, 2020. http://dx.doi.org/10.1007/978-1-0716-0640-7_33.

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Volke, P., and B. Merkel. "A Field Method of Spectrophotometric Determination of Arsenic in Water Including a Speciation." In Field Screening Europe. Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-009-1473-5_86.

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Conference papers on the topic "Spectrophotometric method"

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El-Zohary, Salah E., Tarek Alharby, Hanaa S. El-Desoky, Shin-ichi Morita, and Mohamed Mubark Abdel-Galeil. "Development of rapid, highly selective spectrophotometric method for the detection of trace amounts of nitroxoline in tablet and human serum." In Optics and Photonics International Congress 2024, edited by Kishan Dholakia, Toyohiko Yatagai, Shuji Sakabe, Irina Sorokina, and Din Ping Tsai. SPIE, 2025. https://doi.org/10.1117/12.3033260.

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Horvath, Jack W., Jose Cavallaro, and Craig Fissette. "A New Analytical Technique for Chemical Cleaning Solutions." In CORROSION 1987. NACE International, 1987. https://doi.org/10.5006/c1987-87390.

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Abstract A new method was developed utilizing ion liquid chromatography (ILC) to analyze chelant boiler cleaning solutions. First efforts at analyzing Fe-Cu-(NH4)4 EDTA solutions encountered a separation problem. The iron and copper chelates were not separated enough to allow quantitative analysis of each. The problem was solved by changing the eluent composition. Linearity of chromatograph peak area versus concentration plots for each component was demonstrated and reproducibility confirmed. Commercial AA standards were used to prepare calibration solutions, and analytical data was confirmed
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Fontani, Daniela, Franco Francini, Paola Sansoni, David Jafrancesco, and Luca Mercatelli. "Particles size measurement by spectrophotometric method." In Optical Metrology, edited by Wolfgang Osten, Christophe Gorecki, and Erik L. Novak. SPIE, 2007. http://dx.doi.org/10.1117/12.725877.

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Yaroslavsky, Ilya V., and Valery V. Tuchin. "Inverse Monte Carlo method for spectrophotometric data processing." In Volga Laser Tour '93, edited by Valery V. Tuchin. SPIE, 1994. http://dx.doi.org/10.1117/12.179027.

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Electricwala, A. "A SPECTROPHOTOMETRIC METHOD FOR FIBRIN CLOT LYSIS ASSAY." In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1644839.

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Clot lysis assay is one of the many methods being used to quantitate tissue plasminogen activator in biological fluids and other media. It has been suggested that this assay may be less reproducible and subject to error due to variation between laboratories in determining the end point of clot lysis, especially at lower concentrations of the activator. It has been found that this assay method can be semi-automated by monitoring the absorbance of the fibrin clot, and determining the end point, in a spectrophotometer. Standard clots containing varying concentrations of tPA are prepared in semi-m
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Muhammad, Suha Sabri, Eman Diab Al Samarrai, and Nashwan Hussian Ali. "Spectrophotometric determination of mesalazine using diazo coupling method." In FIFTH INTERNATIONAL CONFERENCE ON APPLIED SCIENCES: ICAS2023. AIP Publishing, 2024. http://dx.doi.org/10.1063/5.0213042.

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Lamandé, Nolwenn, Florence Salvetat, Caroline Le Bihan, and Laurent Delauney. "Spectrophotometric method for the determination of the pHTof sea water." In 17th International Congress of Metrology, edited by Bernard Larquier. EDP Sciences, 2015. http://dx.doi.org/10.1051/metrology/20150007007.

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Kurniawati, Puji, Reny Gusrianti, Bledug Bernanti Dwisiwi, Tri Esti Purbaningtias, and Bayu Wiyantoko. "Verification of spectrophotometric method for nitrate analysis in water samples." In INTERNATIONAL CONFERENCE AND WORKSHOP ON MATHEMATICAL ANALYSIS AND ITS APPLICATIONS (ICWOMAA 2017). Author(s), 2017. http://dx.doi.org/10.1063/1.5016005.

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Mahardhika, Andhika Bintang, Yoshella Novelynda, and Sophi Damayanti. "Validation of spectrophotometric method for lactulose assay in syrup preparation." In THE 5TH INTERNATIONAL CONFERENCE ON MATHEMATICS AND NATURAL SCIENCES. AIP Publishing LLC, 2015. http://dx.doi.org/10.1063/1.4930770.

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Gao, Ling, and Shouxin Ren. "Processing of spectrophotometric array signals using an artificial intelligence method." In 2nd International Conference on Computer Science and Electronics Engineering (ICCSEE 2013). Atlantis Press, 2013. http://dx.doi.org/10.2991/iccsee.2013.312.

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Reports on the topic "Spectrophotometric method"

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Lounds, Christopher D., Alan J. Kennedy, Aimee R. Poda, and Amber L. Russell. A Rapid Spectrophotometric Screening Method for 2,4-dinitroanisole in Laboratory Water. Defense Technical Information Center, 2014. http://dx.doi.org/10.21236/ada604598.

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Keshaven, B., and K. P. Krishna Prasad. A rapid method for the spectrophotometric determination of niobium in geological samples. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1993. http://dx.doi.org/10.4095/193264.

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Yang, Jon, Sophia Bauer, and Circe Verba. Evaluating a Semi-Quantitative, Spectrophotometric Method for the Rapid Determination of Total Rare Earth Element Concentrations in Citrate Leaching Solutions. Office of Scientific and Technical Information (OSTI), 2023. http://dx.doi.org/10.2172/1971983.

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Chutimaworapan, Suchada, Chaiyo Chaichantippayuth, and Areerat Laopaksa. Formulation of pharmaceutical products of Garcinia mangostana Linn. extracts. Chulalongkorn University, 2006. https://doi.org/10.58837/chula.res.2006.32.

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Part I: The purpose of the investigation was to develop the extraction process that was simple, practical and giving high yield. The maceration of dried powder of Garcinia mangostana fruit husk with ethyl acetate gave yellow crystalline powder of mangostin. The yield was calculated as 7.47%. The identification of the Garcinia mangostanahusk extract was carried out by thin-layer chromatography (TLC) and differential scanning calorimetry. The TLC of mangostin was done by using the alumina sheet and ethyl acetate: hexane (3:1) as mobile phase. The Rf value as compared with standard mangostin was
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Kupina, Steve, Mark Kelm, Maria Monagas, and STEFAN GAFNER. Grape Seed Extract Laboratory Guidance Document. ABC-AHP-NCNPR Botanical Adulterants Prevention Program, 2019. http://dx.doi.org/10.59520/bapp.lgd/dozo2637.

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Grape Seed Extract (GSE) has received acceptance almost globally as an ingredient for human consumption. It is one of the more widely used botanical extracts, due to increasing scientific findings supporting health benefits. However, it remains a specialty item relative to global commodities. In the United States, GSE has ranked among the top 20 best-selling dietary supplements in the Food, Drug and Mass Market channel. The motivation behind purposeful adulteration in commercial products is financial gain (also known as economically motivated adulteration) and to increase the concentration in
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Lindahl, Peter. Determination of Arsenic and Selenium in Coal by Hydride Generation/Atomic Absorption Spectrophotometry: An Interlaboratory Study for the Evaluation of a Proposed Standard Test Method. Office of Scientific and Technical Information (OSTI), 1985. http://dx.doi.org/10.2172/6208026.

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