Academic literature on the topic 'Bromine absorption method'

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Journal articles on the topic "Bromine absorption method"

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El-Didamoony, Mai A., Mohamed E. Elsadek, Mohamed M. Baraka, Samy M. Ibrahim, and Mahmoud M. Sebaiy. "Bromatometric Estimation of Irbesartan, Losartan, and Bisoprolol in Bulk and Tablet Forms: Statistical Analysis." Journal of Materials Science and Engineering with Advanced Technology 21, no. 1 (2020): 1–22. http://dx.doi.org/10.18642/jmseat_7100122129.

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A new spectrophotometric method is described for determination of irbesartan, losartan and bisoprolol in bulk and pharmaceutical dosage forms using insitu generated bromine as oxidizing agent and rhodamine B as chromogenic agent. Drugs are treated with known excess of bromine and residual unreacted bromine is determined by treating with fixed amount of rhodamine B then measuring absorbance at 557nm. The amount of bromine reacted corresponds to the amount of each drug. Effect of acidity, bromate-bromide volume and reaction time, on the absorption were studied. Calibration curves were linear ove
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Turhan, Neslihan, Nil Ozbek, and Suleyman Akman. "Method development for the determination of bromine via molecular absorption of barium monobromide by high-resolution continuum source molecular absorption spectrometry." Journal of Analytical Atomic Spectrometry 34, no. 3 (2019): 577–82. http://dx.doi.org/10.1039/c8ja00422f.

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A challenging novel method was developed for the determination of bromine via molecular absorption of barium monobromide (BaBr) using a high-resolution continuum source electrothermal atomic absorption spectrometer (HR-CS ETAAS).
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Park, Hyun-Soo, Yong-Won Han, Gil-Young Oh, et al. "Improving the Method for Measuring Bromine Compounds in Flue Gas." Journal of Environmental Analysis, Health and Toxicology 26, no. 1 (2023): 16–24. http://dx.doi.org/10.36278/jeaht.26.1.16.

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The method detection limit (MDL) using UV-VIS spectrometry (UV/VIS) is the primary method to detect bromine compounds in the flue gas. However, the level of bromine compounds in the flue gas is 0.6 ppm, reaching 20% of the emission limit of 3.0 ppm, which limits the analysis of low-concentration samples. As per the United States Environmental Protection Agency and official test standards for water pollution, bromine compound analysis was performed using ion chromatography (IC). Hydrogen chloride was analyzed using IC, referencing official test standards for air pollution. Therefore, 0.1 M NaOH
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Peterson, Peter K., Denis Pöhler, Holger Sihler, et al. "Observations of bromine monoxide transport in the Arctic sustained on aerosol particles." Atmospheric Chemistry and Physics 17, no. 12 (2017): 7567–79. http://dx.doi.org/10.5194/acp-17-7567-2017.

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Abstract. The return of sunlight in the polar spring leads to the production of reactive halogen species from the surface snowpack, significantly altering the chemical composition of the Arctic near-surface atmosphere and the fate of long-range transported pollutants, including mercury. Recent work has shown the initial production of reactive bromine at the Arctic surface snowpack; however, we have limited knowledge of the vertical extent of this chemistry, as well as the lifetime and possible transport of reactive bromine aloft. Here, we present bromine monoxide (BrO) and aerosol particle mea
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SERA, K., K. K. TERASAKI, T. SASAKI, S. GOTO, C. TAKAHASHI, and Y. SAITOH. "MOVEMENT OF HEAVY ELEMENTS IN PLANTS BY MEANS OF A STANDARD-FREE METHOD FOR LIVING PLANTS IN IN-AIR PIXE." International Journal of PIXE 22, no. 01n02 (2012): 149–55. http://dx.doi.org/10.1142/s0129083512400086.

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The method, which was developed by our group, enables us to perform quantitative analysis of living plants. It has been applied to investigate the transport of heavy elements such as germanium, gallium, bromine and arsenic in plants. These heavy elements are transported to the leaf through vascular vessel, and changes of their concentration with elapsed time after absorption could be clearly observed. It was confirmed that the movement depends on elements, on the manner of absorption and on the states of plant growth. In addition to the movement of supplied elements, some elements in the plant
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Sheng, Yonggang, Yao Xu, Dong Jiang, Liping Liang, Dong Wu, and Yuhan Sun. "Hydrothermal Preparation of Visible-Light-Driven N-Br-CodopedTiO2Photocatalysts." International Journal of Photoenergy 2008 (2008): 1–7. http://dx.doi.org/10.1155/2008/563949.

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Using a facile hydrothermal method, N-Br-codopedTiO2photocatalyst that had intense absorption in visible region was prepared at low temperature (100°C), through a direct reaction between nanocrystalline anataseTiO2solution and cetyltrimethylammonium bromide (CTAB). The results of X-ray photoelectron spectroscopy (XPS) showed the existence of N-Ti-N, O-Ti-N-R,Ti3+(attribute to the doped Br atoms by charge compensation), andTiOxNyspecies, indicating the successful codoping of N and Br atoms, which were substituted for lattice oxygen without any influence on the crystalline phase ofTiO2. In contr
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Yoder, C. H., R. W. Schaeffer, P. McWilliams, A. Rowand, X. Liu, and J. Shambeda. "The synthesis of copper/zinc solid solutions of hydroxyl carbonates, sulphates, nitrates, chlorides and bromides." Mineralogical Magazine 75, no. 5 (2011): 2573–82. http://dx.doi.org/10.1180/minmag.2011.075.5.2573.

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AbstractThe relative stabilities of the copper/zinc solid solutions of hydroxyl sulphates, carbonates, nitrates, chlorides and bromides were studied by attempting their preparation using a variety of methods. All of the naturally occurring solid solutions except rosasite were obtained as single phases. Rosasite crystallized in a mixture with malachite and calcium carbonate during a room temperature preparation from calcium carbonate, copper nitrate and zinc nitrate. The solid solution with the antlerite stoichiometry [endmember Cu3SO4(OH)4] as well as the nitrates were not produced by the meth
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Mikhailov, Igor, Anton Mikhailov, Svetlana Borisova, Volodymyr Nehoduiko, and Natalia Seliukova. "Comprehensive X-ray analysis of foreign bodies in the human tissues." Functional Materials 32, no. 2 (2025): 292–96. https://doi.org/10.15407/fm32.02.292.

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For the first time, a complex of X-ray methods: XRD, XRF absorption analysis and the Compton scattering method – was used to study foreign bodies in human tissues. The surface of the fragments on opposite sides was visually significantly different: on one side it was smooth, on the other – rough. At the same time, no differences in the structure of the crystal lattice and the composition of the main impurities were revealed by the XRD and XRF methods. Both methods certified the material of the objects as aluminum alloy AMC. The Compton scattering method showed a change in the effective ato
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Al-Abachi, Mouayed Q., and E. S. Salih. "Some observations on an indirect atomic absorption spectrophotometric method for the microdetermination of chlorine or bromine in organic compounds." Microchemical Journal 37, no. 3 (1988): 293–98. http://dx.doi.org/10.1016/0026-265x(88)90140-3.

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Kreycy, S., C. Camy-Peyret, M. P. Chipperfield, et al. "Atmospheric test of the J(BrONO<sub>2</sub>)/<i>k</i><sub>BrO+NO<sub>2</sub></sub> ratio: implications for total stratospheric Br<sub>y</sub> and bromine-mediated ozone loss." Atmospheric Chemistry and Physics Discussions 12, no. 10 (2012): 27821–45. http://dx.doi.org/10.5194/acpd-12-27821-2012.

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Abstract. We report on time-dependent O3, NO2 and BrO profile measurements taken in the stratosphere by limb observations of scattered skylight at high-latitudes during autumn circulation turn-over. The observations are complemented by simultaneous direct solar occultation measurements around sunset and sunrise performed aboard the same stratospheric balloon payload. Supporting radiative transfer and photochemical modelling indicates that, the measurements can be used to constrain the ratio J(BrONO2)/kBrO+NO2, for which overall a 1.69 &amp;amp;pm; 0.04 larger ratio is found than indicated by t
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Conference papers on the topic "Bromine absorption method"

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Sun, Jian, Lin Fu, Shigang Zhang, and Wei Hou. "Concentration Measurement of Lithium Bromide Aqueous Solution by Electrical Resistivity." In ASME 2010 International Mechanical Engineering Congress and Exposition. ASMEDC, 2010. http://dx.doi.org/10.1115/imece2010-37350.

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Absorption chillers have currently become an important device in saving energy because of its effectiveness in utilizing low grade heat. Lithium bromide is widely used as absorbent in this system. But there were few outstanding concentration measurement methods in practice before. In this paper, complete electrical resistivity data of lithium bromide aqueous solution for concentration measurement was given. The electrical resistivity of lithium bromide aqueous solution was measured at concentrations of 35–70 wt% of lithium bromide and temperatures of 10–100°C. Results of this work can meet the
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Odunfa, K. M., R. O. Fagbenle, and M. O. Oyewola. "Magnetic Field Enhancement in Water-Lithium Bromide Absorption Refrigeration Systems." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-64192.

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Absorption refrigeration systems are generally characterized by low Coefficient of Performance (COP). Absorption enhancement is an effective way of improving the COP of refrigeration systems. Literature is sparse on the use of magnetic field for the enhancement of absorption refrigeration systems despite its cheapness and environmental friendliness as compared with other enhancement methods. Although the method has recently been employed on ammonia solution, its influence on lithium bromide (LiBr) solution is yet to be fully studied. In this paper a numerical model for the magnetic field enhan
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Boudéhenn, François, Sylvain Bonnot, Hélène Demasles, and Amine Lazrak. "Comparison of Different Modeling Methods for a Single Effect Water-Lithium Bromide Absorption Chiller." In EuroSun 2014. International Solar Energy Society, 2015. http://dx.doi.org/10.18086/eurosun.2014.07.04.

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Hu, Yang, Laura A. Schaefer, and Volker Hartkopf. "Detailed Energy and Exergy Analysis for a Solar Lithium Bromide Absorption Chiller and a Conventional Electric Chiller (R134a)." In ASME 2011 International Mechanical Engineering Congress and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/imece2011-64266.

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The Building Energy Data Book (2009) [1] shows that commercial and residential buildings in the U.S. consume 39.9% of the primary energy and contribute 39% of the total CO2 emissions. In the operation of buildings, 41.8% of building energy consumption is provided for building cooling, heating, domestic hot water, and ventilation for commercial buildings, while in residential buildings, this percentage increases to 58%. In energy system analysis, the energy approach is the traditional method of assessing the way energy is used in an operation. However, an energy balance provides no information
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Zhu, Beibei, and Hongtao Gao. "Molecular Dynamics Simulation for the Impact of N-Decanol Surfactants on the Liquid-Vapor Interface of Lithium Bromide Aqueous Solution." In 2010 14th International Heat Transfer Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/ihtc14-22746.

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In order to investigate the effect of n-decanol, a kind of alcohol surfactants, on the absorption of water vapor into lithium bromide aqueous solution, this study focused on microscopic structure of the liquid-vapor interface of the electrolyte solution, the impact of n-decanol molecules on the interfacial properties and the absorption dynamic process employing the method of molecular dynamics simulation. The liquid-vapor configuration of lithium bromide aqueous solution added with four concentration of n-decanol can be analyzed by examining the density profile, the radial distribution functio
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Arora, Ravi, and Keith E. Herold. "Two-Layer Model to Simulate the Effect of Marangoni Enhancement of Absorption." In ASME 2001 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/imece2001/aes-23619.

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Abstract Absorption of vapor into a laminar film of liquid is a well-known problem that has received considerable interest in the literature. In many practical systems, the mass transfer process in the liquid phase is a limiting factor because the diffusion of mass is much slower than the diffusion of energy. Enhancement of absorption usually involves some scheme to mix the liquid, causing the effective diffusivities to increase. One such enhancement method is the use of surfactants that drive Marangoni flow in the liquid. This method is used very effectively in absorption chillers based on aq
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Killion, Jesse D., and Srinivas Garimella. "Simulation of Pendant Droplets and Falling Films in Horizontal Tube Absorbers." In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-60302.

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Recent literature suggests that the droplets that form in horizontal-tube, falling-film absorbers play a major role in the absorption process. The performance of such absorbers is critical to the performance of many absorption heat pump systems. The simulation of droplets of aqueous Lithium Bromide pendant from horizontal tubes was performed by numerically solving the equations of motion on a fixed 3-D grid. The so-called volume of fluid method was used to handle the interface between the liquid and vapor phase. Results are compared with simplified axisymmetric models and with high speed video
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Sigler, James, Don Erickson, and Horacio Perez-Blanco. "Gas Turbine Inlet Air Cooling Using Absorption Refrigeration: A Comparison Based on a Combined Cycle Process." In ASME Turbo Expo 2001: Power for Land, Sea, and Air. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/2001-gt-0408.

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Gas turbines are used to meet increasing power-generating needs throughout the world. Technologies for augmenting the capacity of new or existing installations are being devised. One common strategy is to employ evaporative cooling of gas turbine inlet air. This method is attractive because of simplicity and relatively modest hardware requirements. Another strategy is to recover exhaust heat in order to activate an absorption-refrigeration machine. The cooling machine output is then used to cool and dehumidify the compressor inlet air. In this paper, we delineate a heat recovery system for ste
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Bergquam, James, Joseph Brezner, and Andrew Jensen. "Design and Testing of an Augmented Generator for Solar Fired Absorption Chillers." In ASME 2003 International Solar Energy Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/isec2003-44243.

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This paper presents results from a project sponsored by the California Energy Commission that involved the design and testing of an augmented generator for a solar fired, double effect absorption chiller. Solar powered absorption chillers use water heated by an array of solar collectors to boil a solution of lithium bromide and water. The energy transfer process between pressurized water heated by the solar collectors and the LiBr/H2O solution is the focus of this study. A method of augmenting the heat transfer in the generator was developed, bench tested and implemented in an operating 70kW s
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Gao, Hongtao, Wenjie Guo, Huaqiang Liu, Dong Niu, and Yuying Yan. "Effect of Different Vertical Curved Surfaces on Bubble Merger Using Lattice Boltzmann Model With Large Density Ratio." In ASME 2024 7th International Conference on Micro/Nanoscale Heat and Mass Transfer. American Society of Mechanical Engineers, 2024. http://dx.doi.org/10.1115/mnhmt2024-132000.

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Abstract The cross-sectional shape of the lift pipe of the bubble pump is considered to have a significant impact on the merging of rising bubbles. The effects of cross-sectional shapes of pipes and Reynolds number on the rise and coalescence of near-wall bubbles in lithium bromide solutions are investigated. A hybrid thermal multiphase model incorporating the D3Q15 pseudopotential multiphase lattice Boltzmann model with a large density ratio and the finite difference method is utilized. And the volume translated Peng-Robinson (VTPR) state equation is adopted. It is found that the merging time
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