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- Title
Evaluation of different calibration strategies for the analysis of pure copper and zinc samples using femtosecond laser ablation ICP-MS.
- Authors
Traub, Heike; Wälle, Markus; Koch, Joachim; Panne, Ulrich; Matschat, Ralf; Kipphardt, Heinrich; Günther, Detlef
- Abstract
Solution-doped metal powder pellets as well as aspirated liquids were used as calibration samples to analyze pure copper and zinc certified reference materials (CRMs) by femtosecond laser ablation ICP-MS. It was demonstrated that calibration by copper pellets resulted in relative deviations up to 20%, whereas fs-LA-ICP-MS among copper-based CRMs led to inaccuracies in the same range unless nominal mass fractions were chosen to be <3 mg/kg. Calibration by zinc pellets generally provided better accuracy. Depending on the analyte considered, deviations below 10% were obtained even for mass fractions close to the limit of quantification. Our data, therefore, indicate solution-doped metal powder pellets to be suitable as calibration samples for fs-LA-ICP-MS of metals. Furthermore, the utilization of liquid standards for calibration was found to result in stronger deviations of up to 50% for both copper and zinc samples which, in addition, turned out to be dependent on the plasma conditions. [Figure not available: see fulltext.]
- Subjects
METAL powders; FEMTOSECOND lasers; METALS; COPPER; LASER ablation
- Publication
Analytical & Bioanalytical Chemistry, 2009, Vol 395, Issue 5, p1471
- ISSN
1618-2642
- Publication type
Article
- DOI
10.1007/s00216-009-3061-9