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Mass discrimination in dynamic reaction cell (DRC)-ICP-mass spectrometry

Frank Vanhaecke UGent, Lieve Balcaen UGent, Isolde Deconinck UGent, Isabel De Schrijver, Cristina Marisa Almeida and Luc Moens UGent (2003) JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY. 18(9). p.1060-1065
abstract
The possibility of overcoming spectral interferences by means of selective ion-molecule chemistry in a dynamic reaction cell (DRC) leads to an extension of the application range of ICP-MS for isotopic analysis. In this work, the effect of various instrumental parameters and the matrix composition on the mass discrimination (defined as the deviation between the experimental result and the corresponding 'true' isotopic ratio) was systematically studied. It is demonstrated that various DRC parameters-collision gas flow rate, reaction gas flow rate and bandpass settings-affect the mass discrimination. This observation is probably to be attributed to in-cell fractionation effects, occurring as a result of collisional losses, space-charge effects and kinetic effects in the ion-molecule chemistry. As the isotopic standard and the sample are always measured under identical conditions, external correction for mass discrimination assures accurate results. Under all conditions tested, internal correction for mass discrimination on the other hand-a strategy often used in Sr isotopic analysis did not provide accurate results. Also the matrix composition is demonstrated to have a significant influence on the mass discrimination, especially when using condensation product ions for isotope ratio measurement. This disadvantage can be overcome by using a matrix-matched isotopic standard for external correction or by isolation of the target element from the concomitant matrix, or at least its separation from the dominant matrix components.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (proceedingsPaper)
publication status
published
subject
keyword
ISOTOPE RATIO MEASUREMENTS, INDUCTIVELY-COUPLED PLASMA, HEXAPOLE ICP-MS, ANAL.-AT.-SPECTROM., DETECTOR DEAD-TIME, ISOBARIC INTERFERENCES, REACTION CHEMISTRY, PRECISION, BIAS, ACCURACY
journal title
JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY
J. Anal. At. Spectrom.
volume
18
issue
9
pages
1060 - 1065
conference name
European winter conference on Plasma Spectrochemistry
conference location
Garmisch-Partenkirchen, Germany
conference start
2003-01-12
conference end
2003-01-17
Web of Science type
Article
Web of Science id
000185089600011
JCR category
CHEMISTRY, ANALYTICAL
JCR impact factor
3.2 (2003)
JCR rank
6/67 (2003)
JCR quartile
1 (2003)
ISSN
0267-9477
DOI
10.1039/b303528j
language
English
UGent publication?
yes
classification
A1
id
210363
handle
http://hdl.handle.net/1854/LU-210363
date created
2004-04-13 14:30:00
date last changed
2012-11-12 16:44:24
@article{210363,
  abstract     = {The possibility of overcoming spectral interferences by means of selective ion-molecule chemistry in a dynamic reaction cell (DRC) leads to an extension of the application range of ICP-MS for isotopic analysis. In this work, the effect of various instrumental parameters and the matrix composition on the mass discrimination (defined as the deviation between the experimental result and the corresponding 'true' isotopic ratio) was systematically studied. It is demonstrated that various DRC parameters-collision gas flow rate, reaction gas flow rate and bandpass settings-affect the mass discrimination. This observation is probably to be attributed to in-cell fractionation effects, occurring as a result of collisional losses, space-charge effects and kinetic effects in the ion-molecule chemistry. As the isotopic standard and the sample are always measured under identical conditions, external correction for mass discrimination assures accurate results. Under all conditions tested, internal correction for mass discrimination on the other hand-a strategy often used in Sr isotopic analysis did not provide accurate results. Also the matrix composition is demonstrated to have a significant influence on the mass discrimination, especially when using condensation product ions for isotope ratio measurement. This disadvantage can be overcome by using a matrix-matched isotopic standard for external correction or by isolation of the target element from the concomitant matrix, or at least its separation from the dominant matrix components.},
  author       = {Vanhaecke, Frank and Balcaen, Lieve and Deconinck, Isolde and De Schrijver, Isabel and Almeida, Cristina Marisa and Moens, Luc},
  issn         = {0267-9477},
  journal      = {JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY},
  keyword      = {ISOTOPE RATIO MEASUREMENTS,INDUCTIVELY-COUPLED PLASMA,HEXAPOLE ICP-MS,ANAL.-AT.-SPECTROM.,DETECTOR DEAD-TIME,ISOBARIC INTERFERENCES,REACTION CHEMISTRY,PRECISION,BIAS,ACCURACY},
  language     = {eng},
  location     = {Garmisch-Partenkirchen, Germany},
  number       = {9},
  pages        = {1060--1065},
  title        = {Mass discrimination in dynamic reaction cell (DRC)-ICP-mass spectrometry},
  url          = {http://dx.doi.org/10.1039/b303528j},
  volume       = {18},
  year         = {2003},
}

Chicago
Vanhaecke, Frank, Lieve Balcaen, Isolde Deconinck, Isabel De Schrijver, Cristina Marisa Almeida, and Luc Moens. 2003. “Mass Discrimination in Dynamic Reaction Cell (DRC)-ICP-mass Spectrometry.” Journal of Analytical Atomic Spectrometry 18 (9): 1060–1065.
APA
Vanhaecke, Frank, Balcaen, L., Deconinck, I., De Schrijver, I., Almeida, C. M., & Moens, L. (2003). Mass discrimination in dynamic reaction cell (DRC)-ICP-mass spectrometry. JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY, 18(9), 1060–1065. Presented at the European winter conference on Plasma Spectrochemistry.
Vancouver
1.
Vanhaecke F, Balcaen L, Deconinck I, De Schrijver I, Almeida CM, Moens L. Mass discrimination in dynamic reaction cell (DRC)-ICP-mass spectrometry. JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY. 2003;18(9):1060–5.
MLA
Vanhaecke, Frank, Lieve Balcaen, Isolde Deconinck, et al. “Mass Discrimination in Dynamic Reaction Cell (DRC)-ICP-mass Spectrometry.” JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY 18.9 (2003): 1060–1065. Print.