GABLER, HE and HEUMANN, KG (1993) TRACE ANALYSIS OF CHLORINE IN HIGH-PURITY REFRACTORY-METALS WITH ISOTOPE-DILUTION MASS-SPECTROMETRY. FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY, 346 (4). pp. 426-428. ISSN 0937-0633,
Full text not available from this repository.Abstract
A method for the determination of chlorine in high-purity molybdenum and tungsten with isotope dilution mass spectrometry (IDMS) has been developed using a Cl-37 enriched spike solution. After dissolution of the sample in H2O2, chlorine is separated by AgCl precipitation. Negative Cl- ther-mal ions are produced in a double-filament ion source using an easy-to-handle and cost-efficient quadrupole thermal ionization mass spectrometer. The detection limit, which is mainly influenced by contaminations from the laboratory air, lies between 0.006 and 0.1 mug/g depending on the variation of the blank values. Chlorine concentrations between 0.07 and 10.5 mug/g are analysed in different tungsten and molybdenum samples. A comparison with other sensitive analytical methods shows the urgent necessity of developing alternative methods for the determination of chlorine traces in refractory metals.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ; |
| Depositing User: | Dr. Gernot Deinzer |
| Last Modified: | 19 Oct 2022 08:42 |
| URI: | https://pred.uni-regensburg.de/id/eprint/53931 |
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