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Bibliografías temáticas / Bromine and iodine

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Artículos de revistas

Literatura académica sobre el tema "Bromine and iodine"

Autor: Grafiati

Publicado: 1 de junio de 2024

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Artículos de revistas sobre el tema "Bromine and iodine"

1

Gilfedder, B. S., M. Petri, and H. Biester. "Iodine and bromine speciation in snow and the effect of orographically induced precipitation." Atmospheric Chemistry and Physics 7, no. 10 (2007): 2661–69. http://dx.doi.org/10.5194/acp-7-2661-2007.

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Abstract. Iodine is an essential trace element for all mammals and may also influence climate through new aerosol formation. Atmospheric bromine cycling is also important due to its well-known ozone depletion capabilities. Despite precipitation being the ultimate source of iodine in the terrestrial environment, the processes effecting its distribution, speciation and transport are relatively unknown. The aim of this study was to determine the effect of orographically induced precipitation on iodine concentrations in snow and also to quantify the inorganic and organic iodine and bromine species

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2

Gilfedder, B. S., M. Petri, and H. Biester. "Iodine and Bromine speciation in snow and the effect of elevation." Atmospheric Chemistry and Physics Discussions 7, no. 1 (2007): 995–1016. http://dx.doi.org/10.5194/acpd-7-995-2007.

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Abstract. Iodine is an essential trace element for all mammals and may also influence climate through new aerosol formation. Atmospheric bromine cycling is also important due to its well-known ozone depletion capabilities. Despite precipitation being the ultimate source of iodine in the terrestrial environment, the processes effecting the distribution, speciation and transport of these elements are relatively unknown. The aim of this study was to determine the effect of orographic lifting on iodine concentrations and also quantify inorganic and organic iodine and bromine species. Snow samples

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3

Spolaor, A., P. Vallelonga, J. M. C. Plane, et al. "Halogen species record Antarctic sea ice extent over glacial-interglacial periods." Atmospheric Chemistry and Physics Discussions 13, no. 2 (2013): 3881–913. http://dx.doi.org/10.5194/acpd-13-3881-2013.

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Abstract. Sea ice is an integral part of the Earth's climate system because it affects planetary albedo, sea surface salinity, and the atmosphere-ocean exchange of reactive gases and aerosols. Bromine and iodine chemistry is active at polar sea ice margins with the occurrence of bromine explosions and the biological production of organo-iodine from sea ice algae. Satellite measurements demonstrate that concentrations of bromine oxide (BrO) and iodine oxide (IO) decrease over sea ice toward the Antarctic interior. Here we present speciation measurements of bromine and iodine in the TALDICE (TAL

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4

Spolaor, A., P. Vallelonga, J. M. C. Plane, et al. "Halogen species record Antarctic sea ice extent over glacial–interglacial periods." Atmospheric Chemistry and Physics 13, no. 13 (2013): 6623–35. http://dx.doi.org/10.5194/acp-13-6623-2013.

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Abstract. Sea ice is an integral part of the earth's climate system because it affects planetary albedo, sea-surface salinity, and the atmosphere–ocean exchange of reactive gases and aerosols. Bromine and iodine chemistry is active at polar sea ice margins with the occurrence of bromine explosions and the biological production of organoiodine from sea ice algae. Satellite measurements demonstrate that concentrations of bromine oxide (BrO) and iodine oxide (IO) decrease over sea ice toward the Antarctic interior. Here we present speciation measurements of bromine and iodine in the TALDICE (TALo

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5

Prashanth, Nagaraj, Kanakapura Basavaiah, Sameer Abdulrahman, Nagaraju Rajendraprasad, and Basavaiah Vinay. "Application of bromate-bromide mixture as a green brominating agent for the spectrophotometric determination of atenolol in pharmaceuticals." Chemical Industry and Chemical Engineering Quarterly 18, no. 1 (2012): 43–52. http://dx.doi.org/10.2298/ciceq110721045p.

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Two highly sensitive spectrophotometric methods are proposed for the quantification of atenolol (ATN) in pure drug as well as in pharmaceutical formulations. The methods are based on the bromination reaction of ATN with a known excess of bromate-bromide mixture in acid medium followed by the determination of unreacted bromine. The residual bromine is determined by its reaction with excess iodide and the liberated iodine (I3?) is either measured at 360 nm (method A) or reacted with starch followed by the measurement of the starch-iodine chromogen at 570 nm (method B). Under the optimum conditio

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6

Abdel-Moety, Ezzat M., Abdel-Kader S. Ahmad, and Mohie Sharaf El-Din. "Determination of Iodine Values of Lipids by Bromide Ion Selective Electrode." Journal of AOAC INTERNATIONAL 69, no. 1 (1986): 67–69. http://dx.doi.org/10.1093/jaoac/69.1.67.

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Abstract A semimicro method for determination of iodine values of lipids is described. An accurately weighed smear of sample (10-20 mg) on a strip of ashless filter paper, 14 × 40 mm, is brominated with bromine vapors for about 5 min. Excess bromine adsorbed on the filter paper is allowed to sublime. Bromine absorbed by the sample is directly related to the degree of unsaturation. Paper with brominated sample is subjected to oxygen flask combustion in the presence of 2 mL 1M sodium hydroxide solution and 10 mL water as absorbing liquid. Bromide formed, which is equivalent to unsaturation, is d

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7

Spolaor, A., P. Vallelonga, J. Gabrieli, et al. "Seasonality of halogen deposition in polar snow and ice." Atmospheric Chemistry and Physics Discussions 14, no. 6 (2014): 8185–207. http://dx.doi.org/10.5194/acpd-14-8185-2014.

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Abstract. The atmospheric chemistry of iodine and bromine in polar regions is of interest due to the key role of halogens in many atmospheric processes, particularly tropospheric ozone destruction. Bromine is emitted from the open ocean but is enriched above first-year sea ice during springtime bromine explosion events, whereas iodine is emitted from biological communities hosted by sea ice. It has been previously demonstrated that bromine and iodine are present in Antarctic ice over glacial-interglacial cycles. Here we investigate seasonal variability of bromine and iodine in polar snow and i

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8

Rybakova, Anastasiya V., Dmitry G. Kim, Elena I. Danilina, Olesya V. Sazhaeva, Marina A. Ezhikova, and Mikhail I. Kodess. "HETEROCYCLIZATION OF 3-PROPARGYLSULFANYL-5 PHENYL-1,2,4-TRIAZINE: TANDEM REACTIONS WITH BROMINE LEADING TO NEW DERIVATIVES OF 7 PHENYL[1,3]THIAZOLO[3,2-B][1,2,4]TRIAZINIUM." IZVESTIYA VYSSHIKH UCHEBNYKH ZAVEDENII KHIMIYA KHIMICHESKAYA TEKHNOLOGIYA 63, no. 6 (2020): 19–24. http://dx.doi.org/10.6060/ivkkt.20206306.6102.

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Derivatives of 1,2,4-triazine-3-thione exhibit biological activity in a wide range. They have optoelectronic properties and can be used as synthons in synthesis of various pyridines by the Diels-Alder reaction. 1,2,4-Triazines are of the greatest interest, for organic synthesis in particular. In the present study we have established that the interaction of 3-propargylsulfanyl-5-phenyl-1,2,4-triazine, obtained by alkylation of 5-phenyl-2,3-dihydro-1,2,4-triazine-3-thione with 3-bromopropyne in acetone in the presence of triethylamine, with halogens leads to annelation of thiazole cycle. At that

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9

Mityusheva, T. P., and O. Ye Amosova. "Industrial brines of the Khoreyver depression of the Pech ora plate." Vestnik of Geosciences 8 (2021): 27–45. http://dx.doi.org/10.19110/geov.2021.8.3.

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We studied areal distribution of the Khoreyver depression and strontium and lithium-rich iodine-bromine and iodine-boron industrial brines in the hydrogeological section. We presented the potential of the territory for practical use of industrial sodium chloride and calcium-sodium underground brines in the maps of distribution of bromine, iodine, boron and strontium-lithium iodinebromine and iodine-boric industrial brines within three Paleozoic calcareous aquifers (O2–S–D1; D3–C1; C–P1). Separate areas with lithium-strontium iodine - bromine and iodine-boric standard quality brines are designa

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10

Spolaor, A., P. Vallelonga, J. Gabrieli, et al. "Seasonality of halogen deposition in polar snow and ice." Atmospheric Chemistry and Physics 14, no. 18 (2014): 9613–22. http://dx.doi.org/10.5194/acp-14-9613-2014.

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Abstract. The atmospheric chemistry of iodine and bromine in Polar regions is of interest due to the key role of halogens in many atmospheric processes, particularly tropospheric ozone destruction. Bromine is emitted from the open ocean but is enriched above first-year sea ice during springtime bromine explosion events, whereas iodine emission is attributed to biological communities in the open ocean and hosted by sea ice. It has been previously demonstrated that bromine and iodine are present in Antarctic ice over glacial–interglacial cycles. Here we investigate seasonal variability of bromin

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