isotopes Major volcanic eruptions linked to the Late Ordovician mass extinction: evidence from mercury enrichment and Hg isotopes By geoscan.nrcan.gc.ca Published On :: Thu, 12 Nov 2020 00:00:00 EDT Hu, D; Li, M; Chen, J; Luo, Q; Grasby, S E; Zhang, T; Yuan, S; Xu, Y; Finney, S C; Sun, L; Shen, Y. Global and Planetary Change vol. 196, 103374, 2020 p. 1-13, https://doi.org/10.1016/j.gloplacha.2020.103374<a href="https://geoscan.nrcan.gc.ca/images/geoscan/20200593.jpg"><img src="https://geoscan.nrcan.gc.ca/images/geoscan/20200593.jpg" title="Global and Planetary Change vol. 196, 103374, 2020 p. 1-13, https://doi.org/10.1016/j.gloplacha.2020.103374" height="150" border="1" /></a> Full Article
isotopes Anomalous fractionation of mercury isotopes in the Late Archean atmosphere By geoscan.nrcan.gc.ca Published On :: Mon, 06 Apr 2020 00:00:00 EDT Zerkle, A L; Yin, R; Chen, C; Li, X; Izon, G J; Grasby, S E. Nature Communications vol. 11, issue 1, 1709, 2020 p. 1-9, https://doi.org/10.1038/s41467-020-15495-3<a href="https://geoscan.nrcan.gc.ca/images/geoscan/20200064.jpg"><img src="https://geoscan.nrcan.gc.ca/images/geoscan/20200064.jpg" title="Nature Communications vol. 11, issue 1, 1709, 2020 p. 1-9, https://doi.org/10.1038/s41467-020-15495-3" height="150" border="1" /></a> Full Article
isotopes Characteristics of Hg concentrations and isotopes in terrestrial and marine facies across the end-Permian mass extinction By geoscan.nrcan.gc.ca Published On :: Fri, 30 Jul 2021 00:00:00 EDT Wang, X; Cawood, P A; Grasby, S E; Zhao, L; Chen, Z -Q; Wu, S; Yuangeng, H. Global and Planetary Change vol. 205, 103592, 2021 p. 1-16, https://doi.org/10.1016/j.gloplacha.2021.103592<a href="https://geoscan.nrcan.gc.ca/images/geoscan/20210505.jpg"><img src="https://geoscan.nrcan.gc.ca/images/geoscan/20210505.jpg" title="Global and Planetary Change vol. 205, 103592, 2021 p. 1-16, https://doi.org/10.1016/j.gloplacha.2021.103592" height="150" border="1" /></a> Full Article
isotopes Nickel isotopes link Siberian Traps aerosol particles to the end-Permian mass extinction By geoscan.nrcan.gc.ca Published On :: Thu, 01 Apr 2021 00:00:00 EDT Li, M; Grasby, S E; Wang, S-L; Zhang, X; Wasylenki, L E; Xu, Y; Sun, M; Beauchamp, B; Hu, D; Shen, Y. Nature Communications vol. 12, 2024, 2021 p. 1-7, https://doi.org/10.1038/s41467-021-22066-7<a href="https://geoscan.nrcan.gc.ca/images/geoscan/20210011.jpg"><img src="https://geoscan.nrcan.gc.ca/images/geoscan/20210011.jpg" title="Nature Communications vol. 12, 2024, 2021 p. 1-7, https://doi.org/10.1038/s41467-021-22066-7" height="150" border="1" /></a> Full Article
isotopes Clumped and oxygen isotopes reveal differential disequilibrium in the formation of carbonates from marine methane seeps By geoscan.nrcan.gc.ca Published On :: Wed, 03 Feb 2021 00:00:00 EDT Savard, M M; Jautzy, J J; Lavoie, D; Dhillon, R S; Defliese, W. Geochimica et Cosmochimica Acta vol. 298, 2021 p. 43-54, https://doi.org/10.1016/j.gca.2021.01.041<a href="https://geoscan.nrcan.gc.ca/images/geoscan/20200080.jpg"><img src="https://geoscan.nrcan.gc.ca/images/geoscan/20200080.jpg" title="Geochimica et Cosmochimica Acta vol. 298, 2021 p. 43-54, https://doi.org/10.1016/j.gca.2021.01.041" height="150" border="1" /></a> Full Article
isotopes High-precision MC-ICP-MS measurements of Cd isotopes using a novel double spike method without Sn isobaric interference By pubs.rsc.org Published On :: J. Anal. At. Spectrom., 2024, Accepted ManuscriptDOI: 10.1039/D4JA00357H, PaperJin Li, Suohan Tang, Xiangkun Zhu, Jianxiong Ma, Zhi-Yong Zhu, Bin YanPrevious studies have reported that even low concentrations of Sn can lead to biased Cd isotopic measurements using MC-ICP-MS. In this paper, we propose a novel method of Cd isotopic...The content of this RSS Feed (c) The Royal Society of Chemistry Full Article
isotopes Applying standard addition to determine antimony isotopes in low-Sb samples using HG-MC-ICP-MS By pubs.rsc.org Published On :: J. Anal. At. Spectrom., 2024, Advance ArticleDOI: 10.1039/D4JA00333K, PaperHonggang Zhu, Jian-Ming Zhu, Decan Tan, Zhuo Lu, Hongfei Liao, Yiwei MaThe δ123Sb value of BCR-2 obtained by the standard addition (SA) method.To cite this article before page numbers are assigned, use the DOI form of citation above.The content of this RSS Feed (c) The Royal Society of Chemistry Full Article
isotopes Separation behavior of hydrogen isotopes via water pervaporation using proton conductive membranes By pubs.rsc.org Published On :: Environ. Sci.: Water Res. Technol., 2024, 10,2787-2795DOI: 10.1039/D4EW00330F, PaperChan Woo Park, Sung-Wook Kim, Hyung-Ju Kim, Euna Jeong, In-Ho YoonHydrogen isotope fractionation during water pervaporation through proton conductive membranes is primarily driven by H+/D+ transport, achieving a maximum H/D separation factor of 1.086.The content of this RSS Feed (c) The Royal Society of Chemistry Full Article
isotopes Isotopes could sniff out fake truffles By cen.acs.org Published On :: 01 Jun 2018 14:38:49 +0000 The abundance of carbon-13 relative to carbon-12 reveals whether the key component of white truffle aroma originates from a natural or synthetic source Full Article
isotopes Undercover isotopes: tracking the fate of nitrogen in streams By www.fs.fed.us Published On :: Tue, 11 Aug 2009 11:20:00 PST Excess nitrogen stemming from human activities is a common water pollutant. Fertilizer runoff, sewage, and fossil fuel emission all contain nitrogen that often ends in streams, rivers, and ultimately the ocean. Full Article
isotopes Techniques for on-demand production of medical radioactive iodine isotopes including I-131 By www.freepatentsonline.com Published On :: Tue, 24 Mar 2015 08:00:00 EDT A system for radioisotope production uses fast-neutron-caused fission of depleted or naturally occurring uranium targets in an irradiation chamber. Fast fission can be enhanced by having neutrons encountering the target undergo scattering or reflection to increase each neutron's probability of causing fission (n, f) reactions in U-238. The U-238 can be deployed as one or more layers sandwiched between layers of neutron-reflecting material, or as rods surrounded by neutron-reflecting material. The gaseous fission products can be withdrawn from the irradiation chamber on a continuous basis, and the radioactive iodine isotopes (including I-131) extracted. Full Article
isotopes Advances in the use of isotopes in geochemical exploration: instrumentation and applications in understanding geochemical processes By geea.lyellcollection.org Published On :: 2020-05-01T00:30:32-07:00 Among the emerging techniques to detect the real footprint of buried ore deposits is isotope tracing. Novel and automated preparation systems such as continuous flow isotope ratio mass spectrometry, off-axis integrated cavity output spectroscopy for isotopic compositions of selected molecules, multi-collector inductively coupled-plasma mass spectrometry (ICP-MS), triple quadrupole ICP-MS, laser ablation ICP-MS, and a multitude of inline preparation systems have facilitated the use of isotopes as tracers in mineral exploration, as costs for isotope analyses have decreased and the time required for the analyses has improved. In addition, the isotope systems being used have expanded beyond the traditional light stable and Pb isotopes to include a multitude of elements that behave differently during processes that promote the mobilization of elements during both primary and secondary dispersion. Isotopes are also being used to understand barren areas that lack a critical process to form an ore deposit and to reveal precise redox mechanisms. The goal is to be able to use isotopes to reflect a definitive process that occurs in association with the deposit and not in barren systems, and then to relate these to something that is easier to measure, namely elemental concentrations. As new generations of exploration and environmental scientists are becoming more comfortable with the application of isotopes to effectively trace processes involved in geoscience, and new technologies for rapid and inexpensive analyses of isotopes are continually being developed, novel applications of isotope tracing are becoming more mainstream. Thematic collection: This article is part of the Exploration 17 collection available at: https://www.lyellcollection.org/cc/exploration-17 Full Article
isotopes ASTROPHYSICS WITH RADIOACTIVE ISOTOPES By library.mit.edu Published On :: Sun, 25 Nov 2018 07:23:59 EST Online Resource Full Article
isotopes Calibration-free quantitative analysis of D/H isotopes with fs-laser filament By feeds.rsc.org Published On :: J. Anal. At. Spectrom., 2020, Accepted ManuscriptDOI: 10.1039/D0JA00062K, PaperGenggeng Li, Huaming Hou, Pengxu Ran, Yunlong Zhao, Zhengye ZhongThe analytical characteristics of D/H isotopes with fs-laser filament are investigated via analyzing a set of D-enriched water samples with D concentrations from 0.5 to 20%. The filament emission spectra...The content of this RSS Feed (c) The Royal Society of Chemistry Full Article
isotopes [ASAP] Biosynthetic Incorporation of Site-Specific Isotopes in ß-Lactam Antibiotics Enables Biophysical Studies By feedproxy.google.com Published On :: Fri, 20 Mar 2020 04:00:00 GMT ACS Chemical BiologyDOI: 10.1021/acschembio.9b01054 Full Article
isotopes Isotopes and the natural environment Paul Alexandre By library.mit.edu Published On :: Sun, 15 Mar 2020 07:45:28 EDT Online Resource Full Article
isotopes 12th International Conference of Processes in Isotopes and Molecules (PIM 2019): 25-27 September 2019 , Cluj-Napoca, Romania / editors, Alia Colniță and Ioan Turcu By library.mit.edu Published On :: Sun, 5 Apr 2020 07:26:29 EDT Online Resource Full Article
isotopes Catalytic exchange of hydrogen isotopes intensified by two-phase stratified flow in wettability designable microchannels By feeds.rsc.org Published On :: Lab Chip, 2020, Accepted ManuscriptDOI: 10.1039/D0LC00250J, PaperYuexiao Song, Feng Xin, Yongsheng XuThis work develops a reliable method to achieve stratified flow in squared cross-section microchannels by endowing the four channel walls with very different wettabilities. The gas–liquid flows are studied experimentally...The content of this RSS Feed (c) The Royal Society of Chemistry Full Article
isotopes Earth’s core may be leaking heavy isotopes of iron, claims study By Published On :: Sunday, April 19, 2020, 10:26 +0530 A new study conducted by geoscientists from Aarhus University and the University of California, Davis has found that the Earth's molten core may be leaking heavy isotopes of iron. Full Article
isotopes Reconstruction of late holocene precipitation for Central Florida as derived from isotopes in speleothems By digital.lib.usf.edu Published On :: Sat, 15 Feb 2014 18:25:36 -0400 Full Article
isotopes Trace metals and stable isotopes as tracers of life history and trophic connections in estuarine-dependent fish from Tampa Bay, Florida By digital.lib.usf.edu Published On :: Sat, 15 Feb 2014 18:46:16 -0400 Full Article
isotopes Stable carbon and hydrogen isotopes from bat guano in the Grand Canyon, USA, reveal Younger Dryas and 8.2 ka events By digital.lib.usf.edu Published On :: Tue, 08 May 2018 16:27:56 -0400 Full Article
isotopes USING STABLE ISOTOPES OF CARBON TO INVESTIGATE THE SEASONAL VARIATION OF CARBON TRANSFER IN A NORTHWESTERN ARKANSAS CAVE By digital.lib.usf.edu Published On :: Sun, 05 Apr 2020 20:35:25 -0400 Full Article
isotopes Chronology, stable isotopes, and glaciochemistry of perennial ice in Strickler Cavern, Idaho, USA By digital.lib.usf.edu Published On :: Mon, 06 Apr 2020 15:21:29 -0400 Full Article
isotopes Reconstructing past climates using carbon isotopes from fulvic acids in cave sediments By digital.lib.usf.edu Published On :: Mon, 06 Apr 2020 18:42:19 -0400 Full Article
isotopes [ASAP] Enrichment of Geogenic Ammonium in Quaternary Alluvial–Lacustrine Aquifer Systems: Evidence from Carbon Isotopes and DOM Characteristics By feedproxy.google.com Published On :: Fri, 08 May 2020 04:00:00 GMT Environmental Science & TechnologyDOI: 10.1021/acs.est.0c00131 Full Article
isotopes Isotopes could sniff out fake truffles By feedproxy.google.com Published On :: 01 Jun 2018 14:38:49 +0000 The abundance of carbon-13 relative to carbon-12 reveals whether the key component of white truffle aroma originates from a natural or synthetic source Full Article
