IAEA-314

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Producing Laboratory: TERC
Stream Sediment

The IAEA-314 stream sediment sample was collected from the Kalan area of the west Kalimantan Borneo, Indonesia, and was donated to the IAEA by the Indonesian Atomic Energy Commission. This material was γ-sterilized to ensure long-term stability of the material by inhibiting microbial action.

Reference date for decay correction: 1988-01-30

AnalyteValueUnit95% C.I.NR/I/C
226Ra732Bq/kg678 – 78726R
Th17.8Bq/kg16.8 – 18.825R
U56.8Bq/kg52.9 – 60.736R

(Value) Concentration calculated as a mean of the accepted laboratory means 
(N) Number of accepted laboratory means 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 interlaboratory comparisons organized by the Chemistry Unit, IAEA Laboratories, Seibersdorf. The details concerning the criteria for qualification as a recommended or information value can be found in the respective report (attached).