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RESEARCH PRODUCT
Ultratrace analysis of calcium with high isotopic selectivity by diodelaser resonance ionisation mass spectrometry
Klaus WendtF. JustonWilfried NörtershäuserBruce A. BushawNorbert TrautmannKlaus BlaumB. Wichesubject
Isotopes of calciumIsotopeChemistryIonizationIsobarAnalytical chemistryResonanceNatural abundanceNuclear ExperimentMass spectrometryBiochemistryQuadrupole mass analyzerdescription
A resonance ionisation mass spectrometer for the ultratrace determination of calcium isotopes is presented. It achieves high overall efficiency, ultra-high isotopic abundance sensitivity of more than 1010 and complete suppression of isobars. The system can be used for isotope ratio studies on stable and long-lived trace isotopes with the final goal of radiodating via 41Ca-determination. For the different applications optical one-, two- or three-step resonance excitation and subsequent ionisation is applied using simple and inexpensive diodelasers. Additional mass analysis is accomplished in a commercial quadrupole mass spectrometer. The experimental set-up and first results on synthetical and meteorite samples are described.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1997-10-13 | Fresenius' Journal of Analytical Chemistry |