Unit Size: 250g
Price per Unit: 90 €
Report: IAEA/AL/075
Date of Release: 1994-08-01
Reference-Sheet (pdf-format)
The IAEA-375 material (top soil to a depth of 20 cm) was obtained from the “Staryi Viskov” collective farm in Novozybkov, Brjansk, Russia in July 1990. The material was air dried and milled to give a grain size less than 0.3 mm by the Brjansk Centre for Agricultural Radiology and Chemistry and dispatched for further processing to the Agency’s Laboratories at Seibersdorf in November 1990. This material has been γ-sterilised to ensure long-term stability of the material by inhibiting microbial action.
Reference date for decay correction: 1991-12-31| Analyte | Value | Unit | 95% C.I. | N | R/I/C |
|---|---|---|---|---|---|
| 106Ru | 56 | Bq/kg | 53 – 58 | 26 | R |
| 125Sb | 77 | Bq/kg | 74 – 79 | 38 | R |
| 129I | 0.0017 | Bq/kg | 0.0013 – 0.0021 | 10 | R |
| 134Cs | 463 | Bq/kg | 454 – 472 | 87 | R |
| 137Cs | 5280 | Bq/kg | 5200 – 5360 | 91 | R |
| 226Ra | 20 | Bq/kg | 18 – 22 | 37 | R |
| 228Th | 21 | Bq/kg | 17 – 25 | 6 | I |
| 232Th | 20.5 | Bq/kg | 19.2 – 21.9 | 11 | R |
| 234U | 25 | Bq/kg | 17 – 32 | 5 | I |
| 238Pu | 0.071 | Bq/kg | 0.056 – 0.085 | 10 | I |
| 238U | 24.4 | Bq/kg | 19.0 – 29.8 | 7 | I |
| 239+240Pu | 0.3 | Bq/kg | 0.26 – 0.34 | 20 | I |
| 241Am | 0.13 | Bq/kg | 0.11 – 0.15 | 6 | I |
| 40K | 424 | Bq/kg | 417 – 432 | 84 | R |
| 90Sr | 108 | Bq/kg | 101 – 114 | 43 | R |
| As | 2.56 | mg/kg | 2.24 – 2.88 | 6 | I |
| Ba | 335 | mg/kg | 316 – 354 | 6 | I |
| La | 17.6 | mg/kg | 15.3 – 19.9 | 5 | I |
| Ni | 9.7 | mg/kg | 7.9 – 11.6 | 5 | I |
| Rb | 48 | mg/kg | 44 – 52 | 8 | I |
| Th | 5.2 | mg/kg | 5.0 – 5.4 | 26 | R |
| U | 1.86 | mg/kg | 1.66 – 2.05 | 30 | R |
| Yb | 1.73 | mg/kg | 1.24 – 2.22 | 5 | I |
(Value) Concentration calculated as a mean of the accepted laboratory means
(N) Number od accepted laboratory mean which are used to calculate the recommended or information values and their respective confidence intervals
(R/I/C) Classification assigned to the property value for analyte (Recommended/Information/Certified)
The values listed above were established on the basis of statistically valid results submitted by laboratories which had participated in one, or more, international intercomparison exercise organized by IAEA-Chemistry Unit, Agency’s Laboratories at Seibersdorf. The details concerning the criteria for qualification as a recommended or information value can be found in the respective reports which are available free of charge upon request. Orders for these materials should be sent to AQCS, Seibersdorf.