. Author manuscript; available in PMC: 2019 Apr 11.

Published in final edited form as: J Radioanal Nucl Chem. 2018;318:10.1007/s10967-018-6032-9. doi: 10.1007/s10967-018-6032-9

Table 5.

²²⁹Th IDAS sample data. Mass values have a relative standard uncertainty of 0.3%

Source ID	²²⁹Th Aliquot (g)	4342A aliquot (g)	²²⁹Th corrected counts	²³⁰Th corrected counts	Massic activity (Bq g⁻¹)
1A	0.04681	0.23224	201134	208015	195.7 (0.9)
2A	0.03359	0.23442	146521	214837	194.2 (1.0)
3A	0.04935	0.22853	193851	187416	195.5 (0.9)
4A	0.03323	0.21738	121015	160688	201.0 (1.0)
5A	0.03362	0.23496	138180	203920	193.2 (1.0)

The values in parentheses are combined standard uncertainties estimated for the individual massic activity measurements