Table 6.
Characteristics of the LS counting sources for the second LS trial in terms of preparation details. There were three replicate cocktails for the uranium sources. The masses given here for them are the averages for the three, and the values in parentheses correspond to their standard deviation of the means. Only one source was prepared for each tritium cocktail (T), the mixed uranium U/3H cocktail (UT), and for a blank (B). Each cocktail also contained approximately 60 mg of the HDEHP complexing agent.
| Cocktail | Mass of UGAB (g) | Mass of blank HNO3 (g) | Aliquot mass of SRM solution (g) | Aliquot mass of 3H standard (g) | Total cocktail mass (g) | faq (%) |
|---|---|---|---|---|---|---|
| U (n = 3) | 9.849 5 (28) | 0 | 0.213 2 (12) | 0 | 10.175 8 (19) | 2.638 (10) |
| T | 9.857 3 | 0.225 1 | 0 | 0.047 01 | 10.137 7 | 2.684 |
| UT | 9.845 8 | 0 | 0.208 8 | 0.047 05 | 10.109 8 | 2.531 |
| B | 9.858 3 | 0.250 5 | 0 | 0 | 10.219 2 | 2.960 |