The IAEA-SL-3 lake sediment was collected from the
Neusiedlersee, located some 80 km south-east of Vienna, Austria. The material
was collected directly from the top layer of the sediment using a mud pump and
then coarse particle were removed in the field. After drying, the material was
milled to give a particle size less than 71 μm. This material was γ-sterilized
to ensure long-term stability of the material by inhibiting microbial
action.
| Analyte | Value | Unit | 95% C.I. | N | R/I/C |
|---|
| Al | 24500 | mg/kg | 23300 – 25700 | 5 | I |
| As | 3.2 | mg/kg | 3.0 – 3.4 | 17 | R |
| Br | 5.6 | mg/kg | 4.8 – 6.4 | 16 | I |
| Ca | 111100 | mg/kg | 107200 – 115000 | 9 | I |
| Ce | 45.5 | mg/kg | 43.8 – 47.2 | 14 | R |
| Cs | 1.38 | mg/kg | 1.24 – 1.52 | 16 | I |
| Dy | 2.22 | mg/kg | 1.65 – 2.79 | 6 | I |
| Eu | 0.66 | mg/kg | 0.64 – 0.68 | 14 | R |
| Hf | 9.1 | mg/kg | 8.5 – 9.7 | 18 | R |
| K | 8740 | mg/kg | 7910 – 9570 | 9 | R |
| La | 22.5 | mg/kg | 21.5 – 23.5 | 18 | R |
| Lu | 0.3 | mg/kg | 0.27 – 0.33 | 12 | I |
| Mg | 27000 | mg/kg | 24600 – 29400 | 5 | I |
| Na | 6690 | mg/kg | 6360 – 7020 | 13 | I |
| Nd | 21.5 | mg/kg | 20.0 – 23.0 | 13 | R |
| Rb | 38.8 | mg/kg | 36.9 – 40.7 | 20 | R |
| Sb | 0.56 | mg/kg | 0.46 – 0.66 | 15 | I |
| Sc | 3.91 | mg/kg | 3.64 – 4.18 | 18 | I |
| Sm | 3.83 | mg/kg | 3.53 – 4.13 | 16 | R |
| Sr | 470 | mg/kg | 450 – 490 | 14 | R |
| Ta | 0.7 | mg/kg | 0.65 – 0.75 | 8 | I |
| Tb | 0.49 | mg/kg | 0.44 – 0.54 | 9 | I |
| Th | 7 | mg/kg | 6.5 – 7.5 | 21 | R |
| Ti | 2610 | mg/kg | 2300 – 2920 | 5 | I |
| U | 2.3 | mg/kg | 2.08 – 2.52 | 13 | I |
| Yb | 1.89 | mg/kg | 1.77 – 2.01 | 14 | I |
(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).
