Results 21 to 30 of about 5,974,105 (275)

An analytical system for stable isotope analysis on carbon monoxide using continuous-flow isotope-ratio mass spectrometry [PDF]

Atmospheric Measurement Techniques, 2015
A fully automated system for the determination of δ13C and δ18O in atmospheric CO has been developed. CO is extracted from an air sample and converted into carbon dioxide (CO2) using the Schütze reagent.
S. L. Pathirana, C. van der Veen, M. E. Popa, T. Röckmann   +3 more
doaj   +1 more source

The Application of Isotope Ratio Mass Spectrometry to Forensic Casework

, 2023
The purpose of this chapter is to discuss the use of isotope ratio mass spectrometry (IRMS) and isotopic abundances in their application to forensic science and forensic intelligence.
Meikle, J, Jones, K
core   +1 more source

Research Progress on Stable Isotope Ratio Mass Spectrometry in Baijiu [PDF]

Shipin Kexue
Baijiu has a history of over 2 000 years. It is one of the world’s six major distilled spirits and is the national liquor of China. China has a vast territory, and regional differences in aroma types and brewing methods contribute to the wide diversity ...
XIE Yuxi, ZHAO Yaqi, HONG Yuhan, ZHAO Xuan, LEI Yi
doaj   +1 more source

Cluster secondary ion mass spectrometry microscope mode mass spectrometry imaging [PDF]

, 2013
RATIONALE: Microscope mode imaging for secondary ion mass spectrometry is a technique with the promise of simultaneous high spatial resolution and high-speed imaging of biomolecules from complex surfaces.
Jungmann, JH, Kiss, A., Heeren, R.M.A., Afd Scheikunde Algemeen, Smith, D.F., Sub Biomol.Mass Spectrometry & Proteom., Biomolecular Mass Spectrometry and Proteomics   +6 more
core   +1 more source

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

Detection of Epitestosterone Doping by Isotope Ratio Mass Spectrometry [PDF]

Clinical Chemistry, 2002
AbstractBackground: Epitestosterone is prohibited by sport authorities because its administration will lower the urinary testosterone/epitestosterone ratio, a marker of testosterone administration. A definitive method for detecting epitestosterone administration is needed.Methods: We developed a gas chromatography-combustion-isotope ratio mass ...
Rodrigo, Aguilera, Caroline K, Hatton, Don H, Catlin   +2 more
openaire   +2 more sources

Comprehensive inter-laboratory calibration of reference materials for δ18O versus VSMOW using various on-line high-temperature conversion techniques [PDF]

, 2009
Internationally distributed organic and inorganic oxygen isotopic reference materials have been calibrated by six laboratories carrying out more than 5300 measurements using a variety of high-temperature conversion techniques (HTC) in an evaluation ...
Weise, Stephan M., Mroczkowski, S. J., Brand, Willi A., Qi, H., Stuart-Williams, Hilary,, Geilmann, Heike, Aerts-Bijma, A. T., Weise, S. E., Jansen, H., Geilmann, Heike,, Qi, Haiping, Coplen, T. B., Bohlke, J., Coplen, Tyler B.,, J. K. Böhlke, Qi, H. P., Aerts-Bijma, Anita T.; id_orcid, Meijer, Harro A. J., Weise, S., Soergel, Karin,, Groning, M., Böhlke, J.K., Gröning, Manfred,, Stephan M. Weise, Gröning, Manfred, Haiping Qi, Anita T. Aerts‐Bijma, Jansen, Henk G.,, Heike Geilmann, Meijer, H. A. J., Gehre, Matthias, Jansen, Henk G., Meijer, Harro A. J.; id_orcid, Roland A. Werner, Werner, Roland A.,, Coplen, Tyler B., Böhlke, J.K.,, Werner, R., Werner, Roland A., Geilmann, H., Jansen, H. G., Aerts-Bijma, Anita T., Stuart-Williams, H., Karin Soergel, Henk G. Jansen, Stanley J. Mroczkowski, Aerts-Bijma, Anita T.,, Gehre, Matthias,, Gehre, M., Bohlke, J. K., Mroczkowski, Stanley J.,, Meijer, Harro A.J.,, Meijer, H., Mroczkowski, S., Mroczkowski, Stanley J., Brand, W., Tyler B. Coplen, Soergel, Karin, Hilary Stuart‐Williams, Weise, Stephan M.,, Willi A. Brand, Aerts-Bijma, A., Matthias Gehre, Brand, Willi A.,, Manfred Gröning, Soergel, K., Coplen, T., Qi, Haiping,, Stuart-Williams, Hilary, Harro A. J. Meijer   +69 more
core   +1 more source

Culinary diversity in early modern Brazil revealed by residue analysis of ceramic artefactsCulinary diversity in early modern Brazil revealed by residue analysis of ceramic artefacts [PDF]

Royal Society Open Science
Brazil is a multi-cultural and ethnically diverse country shaped by a complex history of colonization, migration, slavery and economic intensification that has transformed it into one of the world's leading food-producing regions.
Alice Di Muro, Marjolein Admiraal, Krista M. McGrath, Thiago Fossile, Yun Chiang, Joannes A. A. Dekker, Margherita Cantelli, Nuria Moraleda-Cibrián, Joan Villanueva, Kerry Sayle, Dione DaRocha Bandeira, Fernanda Mara Borba, Maria Cristina Alves, Matthew Collins, Oliver E. Craig, Andre Carlo Colonese   +15 more
doaj   +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

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