Picture of IAEA-493
Picture of IAEA-493
Picture of IAEA-493
Picture of IAEA-493

IAEA-493

Bauxite (mineral ore), 200g
Producing Laboratory: TERC
€250.00

  • Price per Unit: 250 EUR 

  • Date of Release:  2025-11-01

 The raw material was sampled from an old bauxite mining area near Gant village in Hungary and was obtained from the IAEA`s collaborating centre Radioanalytical Reference Laboratory (RRL), Food Chain Safety Laboratory Directorate, National Food Chain Safety Office, Budapest, Hungary. The feasibility study, preparation, and pre-treatment of the bulk raw material were done in RRL. The grain size of the material fraction used for production of IAEA-493 is in the 250-500 µm range. Homogeneity and stability studies were performed at TERC Laboratory, Austria. Further details can be found on the Certificate.  

 

Reference date for all specified radionuclide decay corrections: 01 January 2024​  

Certified values for activity concentration 

(based on dry mass) 

Radionuclide 

Certified value [Bq kg-1]  

Uncertainty(a)[Bq kg-1]  

Half-life

232Th 

130 

8 

14.02(6)×109 y 

235U 

6.66 

0.25 

704(1)×106 y 

238U 

149 

6 

4.468(5)×109 y 

226Ra 

144 

5 

1600(7) y 

210Pb 

140 

7 

22.23(12) y 

(a) The uncertainty is expressed as a combined standard uncertainty (coverage factor k = 1). 

Information values for activity concentration 

(based on dry mass)  

Radionuclide 

Information value[Bq kg-1]  

Uncertainty(a)[Bq kg-1]  

Half-life

40K 

25.4 

4.8 

1.2504(30)×109 y 

137Cs 

2.44 

0.31 

30.018(22) y 

(a) The uncertainty is expressed as a combined standard uncertainty (coverage factor k = 1). 

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