Naturalization of PPB range iridium determination by instrument neutron activation in Hungary
The determination of iridium is the most commonly used scanning technique in the search for chemical impact markers. Until now Ir was not on the list of the standardized and measured elements in Hungary by neutron activation. As the naturalisation of the technique, we calibrated and tested the iridi...
Elmentve itt :
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| Dokumentumtípus: | Cikk |
| Megjelent: |
Department of Mineralogy, Geochemistry and Petrology, University of Szeged
Szeged
2004
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| Sorozat: | Acta mineralogica-petrographica
45 No. 1 |
| Kulcsszavak: | Földtan, Ásványtan, Kőzettan |
| Tárgyszavak: | |
| Online Access: | http://acta.bibl.u-szeged.hu/25123 |
| Tartalmi kivonat: | The determination of iridium is the most commonly used scanning technique in the search for chemical impact markers. Until now Ir was not on the list of the standardized and measured elements in Hungary by neutron activation. As the naturalisation of the technique, we calibrated and tested the iridium detection at the Technical University of Budapest.The calculated k factors are the following: 50 mm sample-detector distance at 316 keV, 3.03; at 468 keV, 0.788; in-well geometry at 316 keV, 33.9; at 468 keV, 13.3. The calculated detection limit of iridium is lxlO"9 grams at the most sensitive irradiational and detectional parameters at the Technical University of Budapest. This value combined with the mass of the irradiated sample yields ca. 1 ppb iridium as the lowest concentration that can be detected without chemical preconcentracion. |
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| Terjedelem/Fizikai jellemzők: | 119-121 |
| ISSN: | 0365-8066 |