Abstract
Efficiencies of He/NH3 and He/H2 collision gases were compared in a conventional type of hexapole cell of an inductively coupled plasma mass spectrometer (ICP-MS). The optimum conditions [hexapole and quadrupole bias voltage (VH and VQ) and collision/reaction gas flow rates] were tested for vanadium determination (51V) in chloride matrices. When the He/H2 mixture was used, the optimum values of VH and VQ were −10.0 and −8.0 V, respectively. This set-up corresponds to the kinetic energy discrimination effect. When the He/NH3 mixture was used, the optimum values of VH and VQ were +10.0 and −7.0 V, respectively. Positive VH values correspond to the ion kinetic energy effect, which allows the reactivity of the ions entering the collision/reaction cell with the reaction gas to be controlled. The obtained results showed that the He/H2 mixture is not optimal for V determination in samples containing chlorides due to the insufficient suppression of the polyatomic interference of 35Cl16O+. Data obtained from vanadium determination using the He/NH3 mixture were consistent for all selected Cl− concentrations, and the results were acceptable. The detection limit was comparable with detection limits obtained from ICP-MS equipped with a dynamic reaction cell. Analyses of elements forming interfering molecules, e.g., iron (56Fe), arsenic (75As) and selenium (80Se), were in good agreement with the certified values for both studied collision/reaction gas mixtures.
References
Louie H, Wu M, Di P, Snitch P, Chapple G (2002) J Anal At Spectrom 17:587–591
Poledniok J, Buhl F (2003) Talanta 59:1–8
Yang L, Sturgeon RE, Prince D, Gabos S (2002) J Anal At Spectrom 17:1300–1303
Nixon DE, Neubauer KR, Eckdahl SJ, Butz JA, Burrit MF (2002) Spectrochim Acta B 57:951–966
Tanner SD, Baranov VI, Bandura DR (2002) Spectrochim Acta B 57:1361–1452
Yamada N, Takahashi J, Sakata K (2002) J Anal At Spectrom 17:1213–1222
Liu H, Jiang S-J (2002) J Anal At Spectrom 17:556–5597
Boulyga SF, Dietze HJ, Becker JS (2001) Microchim Acta 137:93–103
Dexter MA, Reid HJ, Sharp BL (2002) J Anal At Spectrom 17:676–681
Niemelä M, Perämäki P, Kola H, Piispanen J (2003) Anal Chim Acta 493:3–12
Feldman I, Jakubowski N, Thomas C, Stuewer D (1999) Fresenius J Anal Chem 365:422–428
Acknowledgements
The presented study was supported by the research project MSM 6007665806 Ministry of Education of the Czech Republic. The authors wish to sincerely thank Prof. Pavel Kalač and Dr. Martin Křížek for critical reviews of the article and one anonymous reviewer for significantly improving the quality of the manuscript.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Chrastný, V., Komárek, M., Mihaljevič, M. et al. Vanadium determination in chloride matrices using ICP-MS: finding the optimum collision/reaction cell parameters for suppressing polyatomic interferences. Anal Bioanal Chem 385, 962–970 (2006). https://doi.org/10.1007/s00216-006-0478-2
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00216-006-0478-2