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Journal articles on the topic 'Bromine absorption method'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

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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2

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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3

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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7

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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8

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 вЂ“ 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 вЂ“ 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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9

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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10

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;pm; 0.04 larger ratio is found than indicated by t

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11

Voss, Karolin, Philip Holzbeck, Klaus Pfeilsticker, et al. "A novel, balloon-borne UV–Vis spectrometer for direct sun measurements of stratospheric bromine." Atmospheric Measurement Techniques 17, no. 14 (2024): 4507–28. http://dx.doi.org/10.5194/amt-17-4507-2024.

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Abstract. We report on a novel, medium-weight (∼ 25 kg) optical spectrometer coupled to an automated sun tracker for direct sun observations from azimuth-controlled balloon platforms weighing approximately 12 kg. It is designed to measure a suite of UV–Vis absorbing gases relevant in the context of stratospheric ozone depletion using the differential optical absorption spectroscopy (DOAS) method, i.e. O3, NO2, BrO, OClO, HONO, and IO. Here, we describe the design and major features of the instrument. Further, the instrument's performance during two stratospheric deployments from Esrange near K

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12

Galashev, Alexander Y. "Computer study of absorption of oxygen and ozone molecules by water clusters with Cl– and Br–." Canadian Journal of Chemistry 89, no. 4 (2011): 524–33. http://dx.doi.org/10.1139/v10-174.

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Infrared absorption and Raman spectra were calculated by using the molecular dynamics method for water clusters with chlorine and bromine ions in a medium of water and either ozone or oxygen molecules. The intensity of IR absorption spectra of clusters with absorbed oxygen increased and that of clusters with absorbed ozone decreased as the number of chlorine ions grew. When Br– were present in the system the inverse behaviour was observed. An increase in the number of ions weakened the intensity of the Raman spectra when either oxygen or ozone was absorbed; for ozone this weakening was more no

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13

Ghaithan, Hamid M., Saif M. H. Qaid, Zeyad A. Alahmed, Huda S. Bawazir, and Abdullah S. Aldwayyan. "Electronic Structure and Optical Properties of Inorganic Pm3m and Pnma CsPbX3 (X = Cl, Br, I) Perovskite: A Theoretical Understanding from Density Functional Theory Calculations." Materials 16, no. 18 (2023): 6232. http://dx.doi.org/10.3390/ma16186232.

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In this study, we investigated the optoelectronic properties of cubic (Pm3m) and orthorhombic (Pnma) CsPbX3 (X = I, Br, and Cl). We utilized the full potential linear augmented plane wave method, which is implemented in the WIEN2k code, to facilitate the investigation. Different exchange potentials were used to analyze the optoelectronic behavior using the available density functional theory methods. Our findings revealed that CsPbX3 perovskites display direct band gaps at the R and Г points for cubic (Pm3m) and orthorhombic (Pnma) structures, respectively. Among the exchange potentials, the m

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14

Sukhareva, Ksenia Valeriyevna, Nikita Romanovich Sukharev, Irina Ivanovna Levina, Peter Ogbuna Offor, and Anatoly Anatolyevich Popov. "Solvent Swelling-Induced Halogenation of Butyl Rubber Using Polychlorinated N-Alkanes: Structure and Properties." Polymers 15, no. 20 (2023): 4137. http://dx.doi.org/10.3390/polym15204137.

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Traditional butyl rubber halogenation technology involves the halogenation of IIR using molecular chlorine or bromine in a solution. However, this method is technologically complex. This study investigated a novel method for the halogenation of butyl rubber to enhance its stability and resistance to thermal oxidation and aggressive media. The butyl rubber was modified through mechanochemical modification, induced by solvent swelling in a polychlorinated n-alkane solution. During the modification, samples were obtained with chlorine content ranging from 3 to 15%. After extraction, the halogen c

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15

Lin, Zhonghai, Mengdi Liu, Pingjian Wang, et al. "Effects of Br-Doped and Ligand-Symmetry on the Properties of APb(I_1-xBr_x)₄ (A=PeDA/DPA) Perovskites." Journal of Physics: Conference Series 3009, no. 1 (2025): 012016. https://doi.org/10.1088/1742-6596/3009/1/012016.

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Abstract In this paper, the properties of perovskites based on symmetric (1,5-Pentanediamine (PeDA)) and asymmetric (1,4-pentanediamine (DPA)) ligands are systematically tuned by substituting I with Br. This paper employs the method of density functional theory to explore the characteristics of APb(I1-xBrx)4 (A = PeDA/DPA; x = 0.00, 0.25, 0.50, 0.75, 1.00). The analysis reveals that bromine doping results in a noticeable reduction in the bond lengths within the metal-halide framework. The electronic structure analysis shows that with an increasing Br doping ratio, the bandgap of PeDAPb(I1-xBrx

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16

Erzunov, Dmitry A., Anna A. Botnar, Natalia P. Domareva, Tatiana V. Tikhomirova, and Arthur S. Vashurin. "Synthesis, Spectroscopic Properties and Redox Behavior Kinetics of Rare-Earth Bistetrakis-4-[3-(3,4-dicyanophenoxy)phenoxy]phthalocyaninato Metal Complexes with Er, Lu and Yb." Molecules 26, no. 8 (2021): 2181. http://dx.doi.org/10.3390/molecules26082181.

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Novel bistetrakis-4-[3-(3,4-dicyanophenoxy)phenoxy]phthalocyaninato of complexes erbium, lutetium and ytterbium were synthesized using a template fusion method to prevent any polymerization process. The complexes were separated from the reaction mixtures and characterized by NMR, IR and electron absorption spectroscopy. The spectroscopic properties of the metal phthalocyaninates in chloroform, acetone and tetrahydrofuran were studied. The regular bathochromic shift in the Er–Yb–Lu series was determined. In acetone medium all the complexes obtained were found to exist in an equilibrium state be

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Hu, Xuefeng, Ting Luo, Yuhan Lin, and Mina Yang. "Construction of Novel Z-Scheme g-C3N4/AgBr-Ag Composite for Efficient Photocatalytic Degradation of Organic Pollutants under Visible Light." Catalysts 12, no. 11 (2022): 1309. http://dx.doi.org/10.3390/catal12111309.

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As a green and sustainable technology to relieve environmental pollution issues, semiconductor photocatalysis attracted great attention. However, most single-component semiconductors suffer from high carrier recombination rate and low reaction efficiency. Here, we constructed a novel visible-light-driven Z-scheme g-C3N4/AgBr-Ag photocatalyst (noted as CN-AA-0.05) using a hydrothermal method with KBr as the bromine source. The CN-AA-0.05 photocatalyst shows an excellent photocatalytic degradation performance, and a rhodamine B (RhB) degradation ratio of 96.3% in 40 min, and 2-mercaptobenzothiaz

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18

Waqas, Muhammad. "First-Principle Study of the Structural, Electronic, and Optical Properties of Cubic Cesium Lead Halide Perovskites for Photovoltaic System." Scientific Inquiry and Review 4, no. 2 (2020): 1–16. http://dx.doi.org/10.32350/sir/2020/42/977.

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Lead halide perovskites have attracted considerable attention as optoelectronic materials because these materials have high photovoltaic conversion efficiency. The current study is based on Density Functional Theory (DFT). This theory was used to calculate the structural, optical, and electronic properties of the lead halide perovskites CsPbX3 (X = Chlorine (Cl), Bromine (Br), Iodine (I)) compounds . In order to calculate the above mentioned properties of cubic perovskites CsPbX3 (X = Cl, Br, I), Full Potential Linear Augmented Plane Wave (FP-LAPW) method was implemented in conjunction with DF

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Warnach, Simon, Holger Sihler, Christian Borger, et al. "A new accurate retrieval algorithm of bromine monoxide columns inside minor volcanic plumes from Sentinel-5P TROPOMI observations." Atmospheric Measurement Techniques 16, no. 22 (2023): 5537–73. http://dx.doi.org/10.5194/amt-16-5537-2023.

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Abstract. Bromine monoxide (BrO) is a key radical in the atmosphere, influencing the chemical state of the atmosphere, most notably the abundance of ozone (O3). O3 depletion caused by the release of bromine has been observed and modeled in polar regions, salt pans, and in particular inside volcanic plumes. Furthermore, the molar ratio of BrO and SO2 – which can be detected simultaneously via spectroscopic measurements using the differential optical absorption spectroscopy (DOAS) method – is a proxy for the magmatic composition of a volcano and potentially an eruption forecast parameter. The de

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Pereira, Éderson R., Ivan N. B. Castilho, Bernhard Welz, et al. "Method development for the determination of bromine in coal using high-resolution continuum source graphite furnace molecular absorption spectrometry and direct solid sample analysis." Spectrochimica Acta Part B: Atomic Spectroscopy 96 (June 2014): 33–39. http://dx.doi.org/10.1016/j.sab.2014.04.001.

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Kazantzi, Viktoria, and Aristidis Anthemidis. "An On-Line Flow-Injection Sorbent Extraction System Coupled with Flame Atomic Absorption Spectrometry for Thallium Determination Using a PTFE Turning-Packed Column." Separations 6, no. 2 (2019): 22. http://dx.doi.org/10.3390/separations6020022.

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A novel time-based flow-injection–solid-phase extraction system (FI–SPE) coupled with flame atomic absorption spectrometry (FAAS) for automatic on-line preconcentration and determination of thallium was developed. The efficiency of poly-tetrafluoroethylene (PTFE) turnings packed into a column as sorbent material was investigated for thallium extraction. Total thallium was determined by oxidizing thallium(I) to thallium(III), adding bromine in acidic solution. The formed [TlBr4]− anionic bromo complex was retained onto the PTFE turnings by on-line mixing with sodium diethyl dithiocarbamate (DDT

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Aleksandrov, A. S., and V. A. Beshentsev. "Hydrogeological uniqueness of groundwater in the Cherkashinsky area of the Tobolsk district of the Tyumen region." Oil and Gas Studies, no. 6 (December 28, 2024): 11–24. https://doi.org/10.31660/0445-0108-2024-6-11-24.

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Intensive development of the Tyumen region, where the largest West Siberian megabasin is located (the Tyumen groundwater deposit is the largest in Russia), violates the natural state of ecosystems, in particular groundwater, which is the basis of an ecosystem vital to the health of the planet. Currently, the significance of groundwater is often underestimated. Professor Robert Reinecke from Johannes Gutenberg University Mainz emphasizes that groundwater should be considered as a crucial ecosystem. This is because groundwater is a major ecosystem itself, also it plays a critical role in the ear

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Meshalkin, Andrey O., Ulyana Yu Tsyutskoma, Olesya I. Leonova, et al. "Content of double bonds in polyethylene." Butlerov Communications 63, no. 9 (2020): 128–37. http://dx.doi.org/10.37952/roi-jbc-01/20-63-9-128.

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The content of double bonds in high-pressure polyethylene of various brands obtained from Russian and foreign manufacturers was studied. The essence of the method was to build a calibration curve on an infrared Fourier spectrometer for standard substances with a previously known arrangement of the double bond, saturation of double bonds in the initial polyethylene using gaseous bromine, and subsequent assessment of the locations and number of double bonds in the studied brands of high pressure polyethylene. The calibration substances were trans-4-decene with a purity of 96%, 1-decene with a pu

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Liu, Chuanqi, Wen Zhang, Dingyu Yang, Haibo Tian, and Jun Zhu. "Sr-Doping All-Inorganic CsPbBr3 Perovskite Thick Film for Self-Powered X-ray Detectors." Materials 16, no. 5 (2023): 1783. http://dx.doi.org/10.3390/ma16051783.

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The all-inorganic perovskite cesium lead bromine (CsPbBr3) has attracted much attention in the field of X-ray detectors because of its high X-ray absorption coefficient, high carrier collection efficiency, and easy solution preparation. The low-cost anti-solvent method is the main method to prepare CsPbBr3; during this process, solvent volatilization will bring a large number of holes to the film, leading to the increase of defects. Based on the heteroatomic doping strategy, we propose that Pb2+ should be partially replaced by Sr2+ to prepare leadless all-inorganic perovskite. The introduction

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General, S., D. Pöhler, H. Sihler, et al. "The Heidelberg Airborne Imaging DOAS Instrument (HAIDI) – a novel imaging DOAS device for 2-D and 3-D imaging of trace gases and aerosols." Atmospheric Measurement Techniques 7, no. 10 (2014): 3459–85. http://dx.doi.org/10.5194/amt-7-3459-2014.

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Abstract. Many relevant processes in tropospheric chemistry take place on rather small scales (e.g., tens to hundreds of meters) but often influence areas of several square kilometer. Thus, measurements of the involved trace gases with high spatial resolution are of great scientific interest. In order to identify individual sources and sinks and ultimately to improve chemical transport models, we developed a new airborne instrument, which is based on the well established Differential Optical Absorption Spectroscopy (DOAS) method. The Heidelberg Airborne Imaging DOAS Instrument (HAIDI) is a pas

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Pechnikova, Nadezhda L., Tatiana A. Ageeva, Oskar I. Koifman, Elena V. Alopina, and Oleg Yu Кuznetsov. "SYNTHESIS AND STUDY OF ANTIBACTERIAL ACTIVITY OF BROMINE DERIVATIVES OF PORHYRIN POLYMERS AND THEIR ZINC COMPLEXES." IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENIY KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA 60, no. 2 (2017): 52. http://dx.doi.org/10.6060/tcct.2017602.5404.

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A creation of new water-soluble porphyrin-polymers having antibacterial properties is actual today because these substances can be used in a medicine and pharmacology. Therefore, the aim of this work is to obtain a water-soluble polyvinyl alcohol-based immobilizates containing dibromo-derivatives of meso-aryl porphyrins in a side chain of the polymer and the study of their bacterial activity towards Escherichia coli ATCC 25922, Candida albicans ATCC 885-653, Staphylococcus aureus ATCC 653. The bromination of 2-formyl-5,10,15,20-tetraphenylporphyrin and its zinc (II) complexes in the phenyl rin

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Chetvertneva, Irina A., Oleg Kh Karimov, Galina A. Teptereva, and Eldar M. Movsumzade. "POSSIBILITIES OF IMPROVING QUALITY CHARACTERISTICS OF INACTIVE NEUTRAL LIGNOSULFONATES." IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENII KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA 63, no. 10 (2020): 53–58. http://dx.doi.org/10.6060/ivkkt.20206310.6240.

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The article proposes a method of increasing the amount of OH-phenolic functional groups in the composition of a macromolecule lignosulphonate, a sulfo-derivative natural lignin polymer, tested under laboratory conditions by step-by-step chemical treatment of the lignosulphonate matrix with a solution of a bromine derivative, then with a solution of neutral sodium sulfite. This makes it possible to solve the problem characteristic of modern lignosulphonates of neutral sulfite production method, which have low values of tannidicity index: content of OH-phenolic groups, quantitative content of wh

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Ivanovna, Kucherenko Lyudmila, Parniuk Natalia Viktorovna та Khromylova Olga Vladimirovna. "VALIDATION OF THE QUANTITATION METHODS OF 1-(β-PHENYLETHYL)-4-AMINO-1,2,4- TRIAZOLE BROMIDE SUBSTANCE BY SPECTROPHOTOMETRIC METHOD". Asian Journal of Pharmaceutical and Clinical Research 11, № 2 (2018): 231. http://dx.doi.org/10.22159/ajpcr.2018.v11i2.22740.

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Objective: The aim of the work was to determine the validation characteristics for the developed method of quantitation of 1-(β-phenylethyl)-4- amino-1,2,4-triazole bromide substance by absorption spectrophotometry in the ultraviolet region (UV).Methods: For study purposes, the 1-(β-phenylethyl)-4-amino-1,2,4-triazole bromide substance and the standard sample, obtained by the state enterprise “plant of chemical reagents” of scientific and technological complex “institute of single crystals” of the National Academy of Sciences of Ukraine, was used. In the course of our work, we used chemical, p

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Zabolotnykh, Svetlana A., and Svetlana A. Denisova. "Determination of alkylbenzolsulphonic acid in aqueous solutions." Вестник Пермского университета. Серия «Химия» = Bulletin of Perm University. CHEMISTRY 11, no. 1 (2021): 17–29. http://dx.doi.org/10.17072/2223-1838-2021-1-17-29.

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The possibility of determining the anionic surfactant alkylbenzenesulfonic acid by various methods: potentiometric and conductometric titration with sodium hydroxide, conductometric titration with cationic surfactants (tetrabutylammonium bromide, cetyltrimethylammonium bromide) and spectrophotometry in the UV region, was considered. The acid-base titration method allows to determine the alkylbenzenesulfonic acid concentration in pure aqeous solutions. The content of anionic surfactant in the presence of nitric acid can be determined by conductometric titration with cetyltrimethylammonium bromi

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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 13, no. 13 (2013): 6263–74. http://dx.doi.org/10.5194/acp-13-6263-2013.

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Abstract. We report on time-dependent O3, NO2 and BrO profiles measured by limb observations of scattered skylight in the stratosphere over Kiruna (67.9° N, 22.1° E) on 7 and 8 September 2009 during the 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 indicate that the measurements can be used to constrain the ratio J(BrONO2)/kBrO+NO2, for which at T = 220 ± 5 K an overall 1.7 (+0.4 −0.2

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Sztucki, Michael, Emanuela Di Cola, and Theyencheri Narayanan. "Instrumental developments for anomalous small-angle X-ray scattering from soft matter systems." Journal of Applied Crystallography 43, no. 6 (2010): 1479–87. http://dx.doi.org/10.1107/s002188981003298x.

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An optimized instrument for anomalous small-angle X-ray scattering from charged soft matter is described. The experimental setup takes special care for single-photon detection sensitivity, high energy resolution of the monochromator,in situcalibration of intensity and energy, and the avoidance of radiation damage. Measured intensities are normalized to an absolute scale online, which can be further decomposed to resonant and non-resonant contributions. The performance of the instrument is demonstrated by an example involving cationic surfactant micelles with bromide counter-ions. The counter-i

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Zhou, Dong Yi, Chu Ping Shi, and Wen Hua Yuan. "Research on LiBr Absorption Refrigeration System Using Automotive Exhausted Heat." Advanced Materials Research 317-319 (August 2011): 2297–301. http://dx.doi.org/10.4028/www.scientific.net/amr.317-319.2297.

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Based on the structure and characteristic of automotive refrigeration system and engine circulation cooling water system and exhausted waste heat system, combing the working principle of lithium bromide absorption refrigeration system, the authors used the automotive exhaust pipe and cooling water tank improved as the generator of the lithium bromide absorption refrigeration system, which might realize the objective using the lithium bromide absorption hot-cold water unit to replace the automobile air conditioning refrigeration and heating system and the automobile engine cooling system. The m

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Cheng, Siyang, Jianzhong Ma, Xiangdong Zheng, et al. "Retrieval of O3, NO2, BrO and OClO Columns from Ground-Based Zenith Scattered Light DOAS Measurements in Summer and Autumn over the Northern Tibetan Plateau." Remote Sensing 13, no. 21 (2021): 4242. http://dx.doi.org/10.3390/rs13214242.

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Ground-based zenith scattered light differential optical absorption spectroscopy (DOAS) measurements were performed in summer and autumn (27 May–30 November) 2020 at Golmud (94°54′ E, 36°25′ N; 2807.6 m altitude) to investigate the abundances and temporal variations of ozone (O3) and its depleting substances over the northern Tibetan Plateau (TP). The differential slant column densities (dSCDs) of O3, nitrogen dioxide (NO2), bromine monoxide (BrO), and chlorine dioxide (OClO) were simultaneously retrieved from scattered solar spectra in the zenith direction during the twilight period. The O3 v

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Ortega, I., T. Koenig, R. Sinreich, D. Thomson, and R. Volkamer. "The CU 2-dimensional MAX-DOAS instrument – Part 1: Retrieval of NO<sub>2</sub> in 3 dimensions and azimuth dependent OVOC ratios." Atmospheric Measurement Techniques Discussions 7, no. 11 (2014): 11653–709. http://dx.doi.org/10.5194/amtd-7-11653-2014.

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Abstract. We present an innovative instrument telescope, and describe a retrieval method to probe 3-D distributions of atmospheric trace gases that are relevant to air pollution and tropospheric chemistry. The University of Colorado (CU) two dimensional (2-D) Multi-AXis-Differential Optical Absorption Spectroscopy (CU 2D-MAX-DOAS) instrument measures nitrogen dioxide (NO2), formaldehyde (HCHO), glyoxal (CHOCHO), oxygen dimer (O2-O2, or O4) and water vapor (H2O); also nitrous acid (HONO), bromine monoxide (BrO), iodine monoxide (IO) among other gases can in principle be measured. Information ab

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Dix, Barbara, Theodore K. Koenig, and Rainer Volkamer. "Parameterization retrieval of trace gas volume mixing ratios from Airborne MAX-DOAS." Atmospheric Measurement Techniques 9, no. 11 (2016): 5655–75. http://dx.doi.org/10.5194/amt-9-5655-2016.

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Abstract. We present a parameterization retrieval of volume mixing ratios (VMRs) from differential slant column density (dSCD) measurements by Airborne Multi-AXis Differential Optical Absorption Spectroscopy (AMAX-DOAS). The method makes use of the fact that horizontally recorded limb spectra (elevation angle 0°) are strongly sensitive to the atmospheric layer at instrument altitude. These limb spectra are analyzed using reference spectra that largely cancel out column contributions from above and below the instrument, so that the resulting limb dSCDs, i.e., the column integrated concentration

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Wang, Yanhua, Chanjuan Gao, and Shengke Yang. "The association effect of quaternary ammonium salt on carboxymethyl cellulose and its analytical applications." Water Science and Technology 72, no. 6 (2015): 837–43. http://dx.doi.org/10.2166/wst.2015.266.

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Sodium carboxymethyl cellulose (CMC) has been extensively used in petroleum, geology, common household chemicals, food, medicine and other industries, owing to its excellent water-soluble, emulsifying, water retention and film forming properties. It is known as ‘industrial monosodium glutamate’. However, the research of the test method on CMC is far behind the research of its actual application value. This study showed that, weak acid or weak basic medium, the carboxyl groups dissociated from CMC, existing as a big negative ion, which can form ion-association complexes with some quaternary amm

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Lotfy, Hayam Mahmoud, Yasmin Mohamed Fayez, Adel Magdy Michael, and Christine Kamal Nessim. "Evaluation of the Efficiency of Smart Stability-Indicating Spectrophotometric Methods Based on Mathematical and Statistical Processing of the Obtained Results Via Different Manipulating Pathways." Current Pharmaceutical Analysis 16, no. 2 (2020): 186–200. http://dx.doi.org/10.2174/1573412914666181017144323.

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Background: Smart different stability-indicating spectrophotometric methods have been established for the assay of chlordiazepoxide and clidinium bromide without the intervention of alkaline degradate of clidinium via various and different manipulating pathways without previous separation steps. Objective: The specificity of the established methods was inspected by analysing mixtures of cited drugs in the existence of the alkali-induced degradation product. Methods: These methods were employed either on scanned zero-order absorption spectra using absorbance subtraction, dual wavelength and Q-a

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De Matteis, Fabio, Francesco Vitale, Simone Privitera, et al. "Optical Characterization of Cesium Lead Bromide Perovskites." Crystals 9, no. 6 (2019): 280. http://dx.doi.org/10.3390/cryst9060280.

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CsPbBr3 and Cs4PbBr6 perovskite powders have been synthesized through a relatively simple low-temperature and low-cost method. Nanocrystalline films have also been deposited from solutions with four different molar compositions of binary salt precursors. Optical absorption, emission and excitation spectra have been performed in the UV-visible spectral range while X-ray diffraction (XRD) has been recorded to characterize the nanocrystal morphology for the different molar compositions. A preferential orientation of crystallites along the (024) crystalline plane has been observed as a function of

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Ortega, I., T. Koenig, R. Sinreich, D. Thomson, and R. Volkamer. "The CU 2-D-MAX-DOAS instrument – Part 1: Retrieval of 3-D distributions of NO<sub>2</sub> and azimuth-dependent OVOC ratios." Atmospheric Measurement Techniques 8, no. 6 (2015): 2371–95. http://dx.doi.org/10.5194/amt-8-2371-2015.

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Abstract. We present an innovative instrument telescope and describe a retrieval method to probe three-dimensional (3-D) distributions of atmospheric trace gases that are relevant to air pollution and tropospheric chemistry. The University of Colorado (CU) two-dimensional (2-D) multi-axis differential optical absorption spectroscopy (CU 2-D-MAX-DOAS) instrument measures nitrogen dioxide (NO2), formaldehyde (HCHO), glyoxal (CHOCHO), oxygen dimer (O2–O2, or O4), and water vapor (H2O); nitrous acid (HONO), bromine monoxide (BrO), and iodine monoxide (IO) are among other gases that can in principl

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Wen, Gui Qing, Yan Mei Ma, and Zhi Liang Jiang. "Spectrophotometric Determination of Trace Cetyltrimethyl Ammonium Bromide by Nanosilver." Advanced Materials Research 356-360 (October 2011): 920–23. http://dx.doi.org/10.4028/www.scientific.net/amr.356-360.920.

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The decolored reaction between cetyltrimethyl ammonium bromide (CTMAB) and nanosilver was studied, and a simple, rapid spectrophotometric method was established to determine CTMAB. In pH 7.8 Na2HPO4-NaH2PO4buffer solution, nanosilver exhibited a maximum absorption peak at 395 nm, and it reacted with CTMAB to form larger particles that resulted in the absorption decreasing. Under the chosen conditions, the decreased absorbance was linear to the CTMAB concentration in the range of 2.5×10-7-1.0×10-5mol/L, with the regression equation of ΔA395 = 0.0431C CTMAB + 0.0182, the correlation coefficient

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Menozzi, F. D., A. Michel, H. Pora, and A. O. A. Miller. "Absorption method for rapid decontamination of solutions of ethidium bromide and propidium iodide." Chromatographia 29, no. 3-4 (1990): 167–69. http://dx.doi.org/10.1007/bf02268705.

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Efimov, N. N., E. M. Dyakonov, V. V. Papin, R. V. Bezuglov, and A. I. Yanuchok. "A CASE STUDY COMPUTATIONAL ANALYSIS OF LITHIUM BROMIDE SOLUTION FOR HOUSEHOLD ABSORPTION HEAT TRANSFORMER." Bulletin of the South Ural State University series "Power Engineering" 22, no. 3 (2022): 90–99. http://dx.doi.org/10.14529/power220310.

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Steam compression installations operating from electric energy are widely used in the world for air conditioning. This type of installation has a number of disadvantages, and therefore a new air conditioning installation has been proposed. Ab-sorption heat transformer is an air conditioning and hot water installation based on the principle of an absorption heat pump. The installation can also be used for heating. The installation is able to use renewable energy sources or utilize the heat of exhaust gases as heat sources: for example, from a heating boiler with a temperature of up to 115 °C. T

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N., Pourreza, and Shajary J. "Highly selective catalytic-spectrophotometric determination of vanadium(V) by using calmagite-bromate redox reaction." Journal of India Chemical Society Vol 81, Sep 2004 (2004): 762–64. https://doi.org/10.5281/zenodo.5832873.

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Department of Chemistry, College of Science, Shahid Chamran University, Ahvaz-Iran <em>E-mail </em>: pourrezan @yahoo.co.in         <em>Fax</em>: 98-611-3337009 <em>Manuscript received 13 January 2004, accepted 17 March 2004</em> A highly selective and sensitive kinetic method for the determination of trace amounts of vanadium(V) is reported. The method is based on catalytic effect of bromate on the oxidation of calmagite in acidic solutions. The reaction is followed spectrophotometrically by measuring the change in absorbance of calmagitc at λ= 523 nm using a f

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Dafnaz, Habibur Rahman, Budhi Oktavia, Hardeli Hardeli, and Umar Kalmar Nizar. "Pengaruh Penambahan Cetyltrimethylammonium Bromide (CTAB) pada Silika dari Natrium Silikat (Na2SiO3)." Jurnal Periodic Jurusan Kimia UNP 11, no. 1 (2022): 102. http://dx.doi.org/10.24036/p.v11i1.113765.

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Silica is a useful material in adsorption, electronics, mechanical, medical, art to other fields. In this study, Sodium silicate is used which can be used as a more economical precursor of silica as which is produced from natural silica. Silica was synthesized using the sol-gel method. This study aims to determine the effect of adding CTAB mass and aging time in synthesizing silica. The synthesized silica was tested for iodine absorption value and characterized using FTIR. Based on the iodine absorption of variations in adding mass CTAB (0,1, 0,15, 0,2, 0,25, and 0,3 gram) and aging time (8, 1

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Zhang, Huayu, Hongtao Gao, Xiangcheng Gao, and Yuying Yan. "Falling-Film Absorption Model Considering Surface Wave and Vibration Effects Based on Lattice Boltzmann Method." Energies 15, no. 21 (2022): 7925. http://dx.doi.org/10.3390/en15217925.

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As one of the effective solutions to recover waste heat, absorption refrigeration systems are used in various industrial or refrigeration places. Flat-plate falling-film absorption is one of the newer types, and the lattice Boltzmann method (LBM) has certain advantages compared with the traditional numerical simulation method. In this work, an LBM is used to analyze flat-plate falling-film absorption. Using the additional calculation of the pressure by the pseudo-force model, a lithium bromide–water working fluid–heat and mass transfer model driven by steam partial pressure is realized. The re

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Xu, Zhixiang, Jianyuan Zhang, Haiqin Liu, Pengpeng Kuang, Shuang Wang, and Xiaoqi Fu. "Preparation of silver/silver bromide/titanium dioxide/graphene oxide nanocomposite for photocatalytic degradation of 4-chlorophenol." Nanomaterials and Nanotechnology 7 (January 1, 2017): 184798041772404. http://dx.doi.org/10.1177/1847980417724046.

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A ultaviolet–visible light responded photocatalytic nanocomposite, silver/silver bromide/titanium dioxide, supported on graphene oxide (GO; silver/silver bromide/titanium dioxide/GO) was fabricated via a layer intercalation method using n-butylamine, cetyltrimethyl ammonium bromide, titanium dioxide and silver/silver bromide-intercalated GO successively. The resultant silver/silver bromide/titanium dioxide/GO exhibited much stronger visible light absorption and enhanced photocatalytic efficiency than titanium dioxide/GO and titanium dioxide. Furthermore, the degradation efficiency of silver/si

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Lin, Po-Yen, Po-Chen Lin, and Chien-Jung Huang. "High Hydrogen Ion Concentration Causes a Blue Shift in Gold Nanoparticles." Crystals 11, no. 2 (2021): 132. http://dx.doi.org/10.3390/cryst11020132.

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In this research, our team used a rare electrochemical method to obtain gold nanoparticles (GNPs). The growth solution has been added with nitric acid in order to observe the effect of GNPs. The solution also included cetyltrimethylammonium bromide (CTAB) and acetone. All reactions involved the oxidation of acetone and chain polymerization. Therefore, the GNPs changed to a su pramolecular structure. In addition, our team measured absorption wavelength via ultraviolet/ visible spectrophotometer and found an obviously blue shift. This short absorption wavelength is obviously different from other

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Wang, Gui Ping, Gui Yan Wang, and Chun Yan Cao. "Adsorption Characteristics of Directly Modified Bentonite." Advanced Materials Research 826 (November 2013): 263–66. http://dx.doi.org/10.4028/www.scientific.net/amr.826.263.

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Directly modified bentonite was obtained by directly adding modifier cetyl trimethyl ammonium bromide (CTMAB) to sodium bentonite.The modified bentonites adsorption performance to methyl orange and methylene blue was studied, and it was compared with modified bentonite prepared by classical method. The results show that directly modified bentonite has a greater and faster absorption for both methyl orange and methylene blue; the relationship between adsorption quantity and equilibrium concentration conforms to the Langmuir isotherm equation; absorption kinetics is in accordance with the second

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Qi, Hui, Jian Feng Huang, Li Yun Cao, and Jian Peng Wu. "Controlled Synthesis of Hierarchical Flower-Like CuS Spheres by a Facile Microwave Hydrothermal Method." Key Engineering Materials 512-515 (June 2012): 265–68. http://dx.doi.org/10.4028/www.scientific.net/kem.512-515.265.

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–Hierarchical flower–like CuS spheres have been synthesized by a facile microwave hydrothermal (MH) method using cetyltrimethylammonium bromide (CTAB) as the surfactant. The as–prepared CuS crystallites under different CTAB contents were characterized by X–ray diffraction (XRD), field–emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), and selected area electron diffraction (SAED). Results show that the CTAB–assisted CuS particles have hierarchical flower–like microstructures that were assembled by thin nanoflakes with thickness of 10~20 nm. The corresponding

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Qiao, Hai Jun, and Jia Nan Wu. "Discussions of Influence of some Factors on New Vehicle Absorption Cold Source." Applied Mechanics and Materials 532 (February 2014): 479–82. http://dx.doi.org/10.4028/www.scientific.net/amm.532.479.

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Small absorption cold source for car air conditioners differs from the compression cold source characteristics of the cold source, such as vehicle shaking can cause problems such as pollution of coolant water. Based on computational fluid dynamics (CFD) method, spray process in a new small cold source of lithium bromide absorption chiller was simulated by using the k-epsilon model and volume of fraction (VOF) model, which can capture the free surface of the two phase of liquid and gas, and the effects of nozzle profile and car bumping are analyzed, providing a theoretical basis for the applica

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