Results 21 to 30 of about 154,472 (297)

Stable Carbon Isotope Ratio (δ13C) Measurement of Graphite Using EA-IRMS System

Medžiagotyra, 2015
δ13C values in non-irradiated natural graphite were measured. The measurements were carried out using an elemental analyzer combined with stable isotope ratio mass spectrometer (EA-IRMS). The samples were prepared with ground and non-ground graphite, the
Andrius Garbaras, Edmundas Bružas, Vidmantas Remeikis   +2 more
doaj   +1 more source

Existing and emerging technologies for measuring stable isotope labelled retinol in biological samples: isotope dilution analysis of body retinol stores [PDF]

, 2014
This paper discusses some of the recent improvements in instrumentation used for stable isotope tracer measurements in the context of measuring retinol stores, in vivo.
Preston, Tom
core   +1 more source

Pyrolysis-gas chromatography–isotope ratio mass spectrometry of polyethylene [PDF]

Journal of Chromatography A, 2015
Polyethylene is probably the most used plastic material in daily life and its accurate analysis is of importance. In this communication the chemical structure of polyethylenes is studied in detail using conventional analytical pyrolysis (Py-GC/MS), bulk stable isotopic analysis (IRMS) and pyrolysis compound specific stable isotopic analysis (Py-CSIA ...
González-Pérez, José Antonio, Jiménez Morillo, N. T., Rosa Arranz, José M. de la, Almendros Martín, Gonzalo, González-Vila, Francisco Javier   +4 more
openaire   +3 more sources

Measurement of calcium isotopes (δ44Ca) using a multicollector TIMS technique [PDF]

, 2002
We propose a new“multicollector technique” for the thermal ionization mass spectrometer (TIMS) measurement of calcium (Ca) isotope ratios improving average internal statistical uncertainty of the 44Ca/40Ca measurements by a factor of 2–4 and average ...
Bock, Barbara, Eisenhauer, Anton, Gussone, Nikolaus, Hansen, B. T., Heuser, Alexander, Nägeler, Thomas F.   +5 more
core   +1 more source

Ultra-trace Cu isotope ratio measurements via multi-collector ICP-mass spectrometry using Ga as internal standard : an approach applicable to micro-samples [PDF]

, 2018
The capabilities of Cu isotope ratio measurements are often restricted by the small volumes of sample available and/or their low Cu concentration. In this work, an analytical approach was developed for performing Cu isotopic analysis via multi-collector ...
Costas Rodriguez, Marta, Lauwens, Sara, Vanhaecke, Frank   +2 more
core   +1 more source

Method for the determination of concentration and stable carbon isotope ratios of atmospheric phenols [PDF]

Atmospheric Measurement Techniques, 2013
A method for the determination of the stable carbon isotopic composition of atmospheric nitrophenols in the gas and particulate phases is presented. It has been proposed to use the combination of concentration and isotope ratio measurements of precursor ...
M. Saccon, R. Busca, C. Facca, L. Huang, S. Irei, A. Kornilova, D. Lane, J. Rudolph   +7 more
doaj   +1 more source

41Ca in tooth enamel. part I: A biological signature of neutron exposure in atomic bomb survivors [PDF]

, 2010
The detection of 41Ca atoms in tooth enamel using accelerator mass spectrometry is suggested as a method capable of reconstructing thermal neutron exposures from atomic bomb survivors in Hiroshima and Nagasaki.
A. Arazi, A. Wallner, Arakawa E. T., Auxier J. A., Feldman G. J., Fink D., Fink D., G. Korschinek, G. Rugel, H. J. Maier, Huber T., K. Knie, Knie K., Knie K., Korschinek G., Korschinek G., Kutschera W., Kutschera W., Maier H. J., Marchetti A. A., McAninch J. E., Müller D., N. Nakamura, Nagashima Y., Nakamura N., Nolte E., Paul M., Preston D. L., Preston D. L., Preston D. L., Raisbeck G. M., Romanyukha A. A., Rugel G., Rugel G., Rühm W., Rühm W., Rühm W., Shizuma K., Straume T., Straume T., T. Faestermann, W. Rühm, Wallner A., Wallner A., Wallner A.   +44 more
core   +1 more source

Measurement and validation of uranium isotope ratio in uranium ore for isotopic fingerprinting

Radiation Protection and Environment, 2017
Accurate determination of uranium isotope ratio can act as an efficient fingerprint in the nuclear forensics to identify source and intended use of illicit trafficking of uranium material. In this context, a rapid chemical separation technique to isolate
Suchismita Mishra, Sarata Kumar Sahoo, Probal Chaudhury, K S Pradeepkumar   +3 more
doaj   +1 more source

Emerging techniques in vegetable oil analysis using stable isotope ratio mass spectrometry

Grasas y Aceites, 2002
As the practice of vegetable oil adulteration becomes more sophisticated, the possibility to subvert detection using established techniques such as capillary gas chromatography is increasing.
Simon D. Kelly, Christopher Rhodes
doaj   +1 more source

Current challenges in software solutions for mass spectrometry-based quantitative proteomics [PDF]

, 2012
This work was in part supported by the PRIME-XS project, grant agreement number 262067, funded by the European Union seventh Framework Programme; The Netherlands Proteomics Centre, embedded in The Netherlands Genomics Initiative; The Netherlands ...
A Alexandridou, A Gruhler, A Leitner, A Michalski, A Panchaud, A Thompson, A Wolf-Yadlin, AD Polpitiya, AHP America, AI Nesvizhskii, AI Nesvizhskii, AI Nesvizhskii, AJR Heck, Albert J. R. Heck, AM Mayampurath, B Breukelen van, B Carrillo, B Ma, B Macek, B Schwanhäusser, B Zybailov, BAP Roxas, Bas van Breukelen, BO Keller, C Christin, C Ji, C Kumar, CH Becker, CK Frese, C–C Tsou, D Chelius, D Hoof Van, D MacDougall, D Tsur, D Valkenborg, DH Lundgren, DK Han, DL Swaney, DL Tabb, DL Tabb, DM Good, DN Perkins, E Deutsch, E Qeli, EL Hendrickson, G Audi, GL Finney, H Lam, H Lam, H Liu, H Steen, H Steen, I Beer, IP Shadforth, J Cox, J Cox, J Elias, J Gouw, J Grossmann, J Klimek, J Listgarten, J Meija, J Rappsilber, J Seidler, J Zhang, JC Silva, JF Kellie, JF Timms, JV Olsen, K Flikka, K Kultima, K Podwojski, KA Neilson, KC Hansen, KL Simpson, L Martens, L Ting, LF Waanders, LK Iwai, LN Mueller, M Bantscheff, M Bantscheff, M Bern, M Junqueira, M Kohl, M Mann, M Sandin, M Senko, M Unlü, M Vandenbogaert, MA Baldwin, MA Grobei, MA Kuzyk, MC Codrea, ME Belov, ME Sardiu, MH Elliott, MJ MacCoss, MM Savitski, MW Duncan, N Colaert, N Mischerikow, N Wang, NM Griffin, OA Mirgorodskaya, P Lu, P Mallick, P Mortensen, Pedro R. Cutillas, Peter R. Baker, PJ Boersema, PL Ross, PR Baker, PR Cutillas, PR Cutillas, R Aebersold, R Clarke, R Matthiesen, R Matthiesen, R Purves, R Usaite, R Zhang, RA Bradshaw, RD Smith, RE Moore, RJ Chalkley, RJ Chalkley, RJ Jacob, S Cappadona, S Cappadona, S Carr, S Dasari, S Houel, S Julka, S Ong, S-E Ong, SA Beausoleil, SA Gerber, Salvatore Cappadona, SJ Callister, SK Park, SP Gygi, SY Ow, T Shinkawa, TM Annesley, TS Collier, TT Aye, V Faca, V Lange, VG Tusher, VP Andreev, W Weiss, W Yan, W Zhu, WM Old, WX Schulze, X Yang, Y Ishihama, Y Oda, YJ Kim, Z Khan, Z Khan, Z-Q Ma   +162 more
core   +2 more sources