Výsledky vyhledávání - "Isotopes of bromine"

First-principles calculations of equilibrium bromine isotope fractionations

Autor: Caihong Gao, Yun Liu

Publikováno v: Geochimica et Cosmochimica Acta. 297:65-81

Significant bromine (Br) isotope composition variations are found in natural salts and brines, which are often even larger than those of co-existing chlorine isotope compositions. The cause of such large Br isotope variations remains elusive. In this

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::cf0d8b75a867858c0e059888f3a5400a
https://doi.org/10.1016/j.gca.2021.01.010

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Laser Isotope-Selective IR Dissociation of Molecules with a Small Isotopic Shift in Absorption Spectra in Nonequilibrium Thermodynamic Shock Conditions

Autor: Grigorii N Makarov, A. N. Petin

Publikováno v: Journal of Experimental and Theoretical Physics. 132:233-246

We report on the results of investigation of laser isotope-selective IR dissociation of molecules (CF3Br and CF2HCl as examples) characterized by a small (less than 0.25 cm–1) isotopic shift in the IR absorption spectra in nonequilibrium thermodyna

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https://doi.org/10.1134/s1063776121020126

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The bromine and chlorine isotopic composition of the mantle as revealed by deep geothermal fluids

Autor: Chris M. Hall, Aída López-Hernández, Miguel Ramírez-Montes, Océane Rocher, Orfan Shouakar-Stash, Tomo Shibata, Daniele L. Pinti, M. Clara Castro

Publikováno v: Geochimica et Cosmochimica Acta. 276:14-30

Chlorine (Cl) and bromine (Br) are rare elements when considering the whole Earth. However, being highly volatile elements, their delivery and retention processes during planetary accretion and chemical differentiation provide important clues about t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::36532bd8c7733cfd558f443f6df46d77
https://doi.org/10.1016/j.gca.2020.02.028

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Theoretical evaluation of inter-ion and intra-ion isotope effects in fragmentation: insights into chlorine and bromine isotope effects of halogenated organic compounds occurring in electron ionization mass spectrometry

Autor: Yujuan Fan, Xianzhi Peng, Zhiqiang Yu, Jianhua Tan, Caiming Tang, Ke Zheng

Publikováno v: RSC Advances. 10:13749-13758

Revelation of chlorine and bromine isotope effects in fragmentation is crucial for compound-specific isotope analysis of chlorine/bromine (CSIA-Cl/Br) using gas chromatography-electron ionization mass spectrometry (GC-EI-MS), but theoretical fundamen

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::769c92535e2436600ae25f5ca34b0a62
https://doi.org/10.1039/c9ra09155f

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Bromine-isotope Selective Ionization Using Field-free Alignment of IBr Isotopologues with a Switched Nanosecond Laser Pulse

Autor: Tomohito Otobe, Takayuki Kumada, Hiroshi Akagi, Hirokazu Hasegawa, Ryuji Itakura, Yasuhiro Ohshima

Publikováno v: Chemistry Letters. 49:416-418

We demonstrate isotope selective ionization of I79Br and I81Br isotopologues using field-free alignment induced by a linearly-polarized nanosecond laser pulse with rapid turn off at the maximum. Fo...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f43f964e2d64409e4b0ed4c5fe4e91f5
https://doi.org/10.1246/cl.200024

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Bromine Isotope Variations in Magmatic and Hydrothermal Sodalite and Tugtupite and the Estimation of Br Isotope Fractionation between Melt and Sodalite

Autor: Pascale Louvat, Michael A.W. Marks, Gregor Markl, Hans G.M. Eggenkamp

Publikováno v: Minerals, Vol 11, Iss 370, p 370 (2021)
Minerals
Volume 11
Issue 4

We determined the bromine isotope compositions of magmatic and hydrothermal sodalite (Na8Al6Si6O24Cl2) and tugtupite (Na8Al2Be2Si8O24Cl2) from the Ilímaussaq intrusion in South Greenland, in order to constrain the Br isotope composition of the melt

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https://www.mdpi.com/2075-163X/11/4/370

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Application of dual carbon-bromine stable isotope analysis to characterize anaerobic micro-degradation mechanisms of PBDEs in wetland bottom-water

Autor: Haixia Wang, Na Jiang, Xu Wang, Yu Liu, Xu Dong, Guoguang Wang

Publikováno v: Water Research. 208:117854

Polybrominated diphenyl ethers (PBDEs), one kind of persistent organic pollutants, were widely detected in coastal wetlands. Microbial reductive debromination is one of the most important attenuation processes for PBDEs in anaerobic environment, wher

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https://doi.org/10.1016/j.watres.2021.117854

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IR Laser Control of the Clustering of CF3Br Molecules during the Gas-Dynamic Expansion of a CF3Br/Ar Mixture: Bromine Isotope Selectivity

Autor: V. M. Apatin, Evgeny A. Ryabov, A. N. Petin, Grigorii N Makarov, N. D. D. Ogurok

Publikováno v: Journal of Experimental and Theoretical Physics. 127:244-254

The infrared (IR) laser radiation control of the clustering of CF3Br molecules during the gas-dynamic expansion of a CF3Br/Ar mixture at the exit from a nozzle is investigated. Prominence is given to studying the possibility of bromine-isotope-select

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a7f44eb34f966b7a7780cae48c1ceae4
https://doi.org/10.1134/s1063776118070154

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