ICP-MS applied to isotope abundance ratio measurements: Performance study and development of a method for combining uncertainty contributions from measurement correction factors

2007 ◽  
pp. 257-269 ◽  
Author(s):  
Christophe R. Quetel ◽  
Thomas Prohaska ◽  
Simon M. Nelms ◽  
Jurgen Diemer ◽  
Philip D. P. Taylor
Keyword(s):  
Abundance Ratio ◽  
Correction Factors ◽  
Performance Study ◽  
Isotope Abundance ◽  
Icp Ms

scholarly journals A detailed look at chemical abundances in the Magellanic Clouds

2011 ◽  
Vol 7 (S283) ◽  
pp. 502-503
Author(s):  
Richard A. Shaw ◽  
Ting-Hui Lee ◽  
Letizia Stanghellini ◽  
James E. Davies ◽  
D. Anibal García-Hernández ◽  
...  
Keyword(s):  
Direct Methods ◽  
Abundance Ratio ◽  
Type I ◽  
Large Set ◽  
Agb Stars ◽  
Correction Factors ◽  
Chemical Abundances ◽  
Elemental Abundances ◽  
Low Metallicity ◽  
Low Mass

AbstractWe determine elemental abundances of He, N, O, Ne, S, and Ar in Magellanic Cloud planetary nebulae (PNe) using direct methods and a large set of observed ions, minimizing the need for ionization correction factors. In contrast to prior studies, we find a clear separation between Type I and non-Type I PNe in these low-metallicity environments, and no evidence that the O-N nucleosynthesis cycle is active in low-mass progenitors. We find that the S/O abundance ratio is anomalously low compared to H ii regions, confirming the “sulfur anomaly” found for Galactic PNe. We also found that Ne/O is elevated in some cases, raising the possibility that Ne yields in low-mass AGB stars may be enhanced at low metallicity.

scholarly journals Analytical considerations associated with implementing M2+ correction factors to address false positives on As and Se within U.S. EPA method 200.8

2019 ◽  
Vol 34 (10) ◽  
pp. 2094-2104 ◽  
Author(s):  
Skyler W. Smith ◽  
Nicole Hanks ◽  
Patricia A. Creed ◽  
Kasey Kovalcik ◽  
Robert A. Wilson ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
False Positives ◽  
Correction Factors ◽  
Icp Ms

Rare earth elements (REE) can produce M2+ ions in ICP-MS and 150Nd2+, 150Sm2+, and 156Gd2+ can produce false positives on 75As and 78Se.

scholarly journals Chlorine and sulfur in nearby planetary nebulae and H II regions

2011 ◽  
Vol 7 (S283) ◽  
pp. 488-489
Author(s):  
Mónica Rodríguez ◽  
Gloria Delgado-Inglada
Keyword(s):  
Planetary Nebulae ◽  
Abundance Ratio ◽  
H Ii Regions ◽  
Correction Factors ◽  
The Real ◽  
Oxygen Atoms

AbstractWe derive the chlorine abundances in a sample of nearby planetary nebulae (PNe) and H II regions that have some of the best available spectra. We use a nearly homogeneous procedure to derive the abundance in each object and find that the Cl/H abundance ratio shows similar values in H II regions and PNe. This supports our previous interpretation that the underabundance we found for oxygen in the H II regions is due to the depletion of their oxygen atoms into organic refractory dust components. For other elements, the bias introduced by ionization correction factors in their derived abundances can be very important, as we illustrate here for sulfur using photoionization models. Even for low-ionization PNe, the derived sulfur abundances can be lower than the real ones by up to 0.3 dex, and the differences found with the abundances derived for H II regions that have similar S/H can reach 0.4 dex.

The carbon isotope abundance ratio in comet Halley

1995 ◽  
Vol 439 ◽  
pp. 1021 ◽  
Author(s):  
Marvin Kleine ◽  
Susan Wyckoff ◽  
Peter A. Wehinger ◽  
Bruce A. Peterson
Keyword(s):  
Carbon Isotope ◽  
Abundance Ratio ◽  
Isotope Abundance ◽  
Comet Halley

Application of strontium isotope abundance ratios measured by MC-ICP-MS for food authentication

2004 ◽  
Vol 19 (2) ◽  
pp. 227 ◽  
Author(s):  
G. Fortunato ◽  
K. Mumic ◽  
S. Wunderli ◽  
L. Pillonel ◽  
J. O. Bosset ◽  
...  
Keyword(s):  
Strontium Isotope ◽  
Food Authentication ◽  
Isotope Abundance ◽  
Icp Ms
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