Naturalisation of ppb range iridium determination by instrumental neutron activation in Hungary | Szegedi Tudományegyetem, Ásványtani, Geokémiai és Kőzettani Tanszék

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Mai névnapok:

Emil, Csanád

Naturalisation of ppb range iridium determination by instrumental neutron activation in Hungary

Reference:
Acta Mineralogica-Petrographica, Szeged 2004, Vol. 45/1, pp. 119–121

Szerző:
Zajzon Norbert
Molnár Zsuzsa

Abstract:
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 1×10–9 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.

 

Letöltés

 

acta2004, determination, Hungary, instrumental neutron, iridium, naturalisation

 

 




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