IAEA & FIRI - C-14 intercomparison data
A key part of the laboratory's work is ensuring accurate radioactivity measurements in both its own and other laboratories.
The staff regularly participates in proficiency tests organized by the International Atomic Energy Agency (IAEA) (more than 20 rounds since 1990) and other international and local organizations.
All intercomparison work begins of IAEA standard sample set for C-14 intercomparison (C1-C6 available from IAEA).
Below are presented data produced by IAEA laboratory (AQCS-1996/1997 p.11 (pmC)) as Table 1.
Besides we enclosed for comparison our data results corresponding to IAEA (AQCS-1996/1997 p.11) as Table 2.
Table 1. - IAEA (AQCS-1996/1997 p.11 )| ID | Name | Material | Mass (g) | C-14 | dC-14 | dC-13 | ddC13 |
| 1 | IAEA-1 | marble | 50 | 0 | 0,02 | 2,42 | 0,33 |
| 2 | IAEA-2 | travertite | 50 | 41,14 | 0,03 | -8,45 | 0,31 |
| 3 | IAEA-3 | cellulose | 50 | 129,4 | 0,06 | -24,9 | 0,49 |
| 4 | IAEA-4 | wood | 50 | 0,44 | -24,0 | 0,62 | |
| 5 | IAEA-5 | wood | 50 | 23,05 | 0,02 | -25,5 | 0,72 |
| 6 | IAEA-6 | cucrose | 50 | 150,6 | 0,11 | -10,8 | 0,47 |
Table 2. - Our results
| IAEA | ID | Material | Our data | IAEA data | dC-14 | d |
| IAEA-C6 | C6 | sucrose | 150,57 | 150,61 | 0,11 | -0,03% |
| IAEA-C6 | C6(2) | sucrose | 151,39 | 150,61 | 0,11 | 0,52% |
| IAEA-C6 | C6(3) | sucrose | 151,69 | 150,61 | 0,11 | 0,72% |
| IAEA-C3 | C3(1) | cellulose | 130,85 | 129,41 | 0,06 | 1,12% |
| IAEA-C3 | C3(2) | cellulose | 131,16 | 129,41 | 0,06 | 1,35% |
| IAEA-C5 | C5(1) | wood | 23,10 | 23,05 | 0,02 | 0,21% |
| IAEA-C5 | C5(2) | wood | 23,05 | 23,05 | 0,02 | 0,01% |
| IAEA-C5 | C5(1) | wood | 23,29 | 23,05 | 0,02 | 1,06% |
| IAEA-C5 | C5(2) | wood | 22,94 | 23,05 | 0,02 | -0,49% |
| IAEA-C4 | C4(2) | wood | 0,49 | 0,44 | 12,1% | |
| IAEA-C4 | C4(2) | wood | 0,31 | 0,44 | -29,9% |
Radiocarbon Dating of IAEA & FIRI - intercomparison samples
Laboratory code # 42 : FIRI All in one (PDF)
FIRI :
Kauri wood Sample A ; Sample B
Carbonate (Turbidite) ; Sample C
Dendro wood ; Sample D ; Sample D, LSC ; Sample F ; Sample F, LSC ; Sample H ; Sample H, LSC
Humic acid ; Sample E
Celulose ; Sample I, LSC
Barley mash ; Sample J ; Sample Ja ; Sample J, LSC
