D. CAVADORE (CEA - Marcoule)

3 (approximately 500 mL)
· 1 blank sample
· 1 sample spiked with 230 Thorium and possibly other actinides (sample identified)
· 1 identified sample containing at least plutonium and americium (both together totalling < 2.00 E-02 Bq/L). It may be spiked with one or more other actinides contained in a list provided to the participating laboratories

Note: One of the active samples will have a total activity of between 0 and 5.00 E-03 Bq. The other will have a total activity of between 5.00 E-3 and 2.00 E-02 Bq.

EXPRESSION OF RESULTS Bq.sample^-1

Plutonium Reference solution

Each laboratory taking part in the "Actinides in urine" exercise will receive a sample (v = 15 to 20 mL) of a plutonium acid solution (Activity = 1.00 E+01 to 1.00 E+02 Bq.L^-1) to be measured.

EXPRESSION OF RESULTS Bq.L^-1