From: Expanded uncertainty modeling of the uranium isotope dilution standards
CRM 112 A-1 (SP1) | CRM 112 A-2 (SP2) | CRM 112 A-3 (SP3) | CRM 112 A-4 (SP4) | |
---|---|---|---|---|
mgU/g (spike) | 4.402361 | 0.88090847 | 0.542278906 | 0.130669117 |
proportions (g) | 2.1 | 2.06 | 2.06 | 2.05 |
Spike mg U | 9.2449581 | 1.814671448 | 1.117094546 | 0.267871691 |
Spike to sample portions (ca.) | 1:4 | 1:2 | 1:3 | 1:2 |